Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
www.cars.com/8DPpMTkZ/t8G/Oe9/FFucx1oD7K/YrLYcQG2rQp8hGub/ORoxZ2Ms/LiAOb/HY0ISAB	21600.0 s	169.5 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
/scripts/fc5726e4774e0929f08557f36e4e5e6dbe0be94107942683...	3600.0 s	101.5 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	73.1 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	73.1 KiB
cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js	86400.0 s	104.5 KiB
/signals/config/1902163596694433?v=2.9.303&r=stable&domai...	1200.0 s	45.7 KiB
btloader.com/tag?o=5079965651959808&upapi=true	300.0 s	30.8 KiB
cdn.id5-sync.com/api/1.0/id5-api.js	3600.0 s	34.4 KiB
tags-cdn.clarivoy.com/common/v4/clarivoy.js	900.0 s	25.8 KiB
www.redditstatic.com/ads/pixel.js	60.0 s	19.0 KiB
static.criteo.net/js/ld/ld.js	10800.0 s	24.7 KiB
/signals/config/1571640443377688?v=2.9.303&r=stable&domai...	1200.0 s	18.4 KiB
/ad-creative/aa2ff21d-351c-44cc-b7c8-69f30cbeb631/1172_26...	86400.0 s	38.5 KiB
p.teads.tv/teads-fellow.js	556.0 s	14.6 KiB
js.adsrvr.org/up_loader.1.1.0.js	0.0 ms	12.4 KiB
ajs-assets.ftstatic.com/ftUtils.js	86400.0 s	30.9 KiB
/static-scripts/sites/9f0b3345580a5403a6954d3c4474ac10/ac...	60.0 s	12.1 KiB
cdn.flashtalking.com/frameworks/js/api/2/10/html5API.js	86400.0 s	29.3 KiB
scripts.clarity.ms/0.8.60-beta/clarity.js	86400.0 s	25.0 KiB
/medium/in/v2/stock_photos/e82774af-2ac9-42a4-be6f-2e5c16...	86400.0 s	24.2 KiB
/medium/in/v2/stock_photos/1e28bbd2-f3b8-4866-a78d-7d16a6...	86400.0 s	23.8 KiB
cdn.flashtalking.com/215120/MazdaTier1_320x50_RL/js/main.js	1200.0 s	10.7 KiB
/medium/in/v2/stock_photos/b89d2a6c-2900-4cb1-bf19-cb841e...	86400.0 s	22.6 KiB
/medium/in/v2/stock_photos/62e0b73a-c333-4a24-9e65-23c7de...	86400.0 s	22.1 KiB
/medium/in/v2/stock_photos/dfcacccb-0d1f-4056-b94b-363b63...	86400.0 s	20.5 KiB
/medium/in/v2/stock_photos/ecbc4cd8-5926-4f8e-b320-56d6e4...	86400.0 s	20.4 KiB
js-sec.indexww.com/ht/p/191997-52166489203534.js	14400.0 s	11.5 KiB
wsv3cdn.audioeye.com/bootstrap.js?d=www.cars.com	3600.0 s	9.3 KiB
cdn.flashtalking.com/armada/tags/placement-ft-inserts/10667853-ftInsert.js	1200.0 s	8.2 KiB
/medium/in/v2/stock_photos/07827872-c533-4f5f-8931-3a9112...	86400.0 s	18.1 KiB
connectid.analytics.yahoo.com/connectId-gpt.js	3600.0 s	9.0 KiB
/medium/in/v2/stock_photos/67399961-8f74-4d54-8b21-174db6...	86400.0 s	17.2 KiB
/v2/scripts/loader.js?h=9f0b3345580a5403a6954d3c4474ac10&...	60.0 s	6.9 KiB
/medium/in/v2/stock_photos/c66fa66d-32d0-4d85-8dba-af6b20...	86400.0 s	17.0 KiB
/medium/in/v2/stock_photos/cd74e70d-68ee-44dc-85a8-3edcf3...	86400.0 s	15.1 KiB
www.cars.com/akam/13/4865bb1e	21600.0 s	9.3 KiB
static.criteo.net/js/ld/publishertag.ids.js	86400.0 s	14.8 KiB
zne5szqpbkez95p8v-cars.siteintercept.qualtrics.com/SIE/?Q_ZID=ZN_e5sZQpBKez95p8V	3600.0 s	4.6 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js	86400.0 s	9.1 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	604800.0 s	35.8 KiB
/dvtp_src.js	900.0 s	3.8 KiB
/dvtp_src.js	900.0 s	3.8 KiB
sb.scorecardresearch.com/internal-cs/default/beacon-and.js	86400.0 s	7.8 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...	604800.0 s	30.9 KiB
/medium/in/v2/131c1e9f-7e05-5afe-9e6b-01f5b15a747c/4b2090...	86400.0 s	7.7 KiB
invstatic101.creativecdn.com/encrypted-signals/encrypted-tag-g.js	0.0 ms	2.9 KiB
/medium/in/v2/131c1e9f-7e05-5afe-9e6b-01f5b15a747c/ea5f53...	86400.0 s	6.8 KiB
carsdotcom-cdn.clarivoy.com/carsdotcom/td/tva/loader.js	0.0 ms	2.3 KiB
cdn.flashtalking.com/215120/MazdaTier1_320x50_RL/css/main.css	1200.0 s	2.3 KiB
cdn.flashtalking.com/feeds/frameworks/js/utils/Tracker.js	1200.0 s	2.2 KiB
/dxjsmodule/37.7ea1ffe71ad8c0799cc1.chunk.js?Q_CLIENTVERS...	604800.0 s	18.6 KiB
cdn.flashtalking.com/oba/icon/icone_en.png?EDAA_icon=y	1200.0 s	2.0 KiB
/3bb42e03-b088-459d-bfaf-7cb758821653/launchpad-liveramp.js	0.0 ms	1.5 KiB
/logos/858d3e78-44f9-48b3-820f-e1d82875d5c4/79617b8f-d209...	86400.0 s	3.5 KiB
cdn.flashtalking.com/215120/5471840/manifest.js	1200.0 s	1.5 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg	86400.0 s	2.7 KiB
cdn.flashtalking.com/215120/MazdaTier1_320x50_RL/css/css-reset.css	1200.0 s	1.2 KiB
js.adsrvr.org/universal_pixel.js	0.0 ms	957 B
/usersync/push?partner=criteo&partnerId=k-Q7n0AAk8p--SkQO...	0.0 ms	887 B
/ad-creative/5068ea30-b2f2-4a83-8772-b80e5dcf6ceb/1173_26...	86400.0 s	1.9 KiB
px.ads.linkedin.com/setuid?partner=appNexus	0.0 ms	756 B
/dxjsmodule/1.bc67e778235741631577.chunk.js?Q_CLIENTVERSI...	604800.0 s	7.1 KiB
/cksync.php?cs=3&type=crt&ovsid=k-QFNMkQk8p--SkQOg1uyRPN_...	0.0 ms	676 B
/rp.gif?ts=1776892844539&id=t2_13v98loi&event=PageVisit&m...	0.0 ms	666 B
ws.audioeye.com/ae.js	120.0 s	668 B
/tapestry/1?ta_partner_id=2052&ta_partner_did=k-LMKADwk8p...	0.0 ms	519 B
/config/com/16b169e4-3c07-4ca4-9543-ed171efb4ab2.js?v=3.5...	0.0 ms	475 B
/uid/sync.htm?pid=13079&cuid=k-qBlgqgk8p--SkQOg1uyRPN_nXk...	0.0 ms	411 B
tags-cdn.clarivoy.com/carsdotcom/td/dana/dana.js	0.0 ms	411 B
criteo-partners.tremorhub.com/sync?UICR=k-Nzafsgk8p--SkQOg1uyRPN_nXkBjSu5b2iugwg	0.0 ms	399 B
/sg/criteortb-network/1/rtb-h/?taboola_hm=k-vfij0Qk8p--Sk...	0.0 ms	386 B
/t/beacon?pr=292830&adn=7&ca=311540&si=3315&pl=10667853&c...	0.0 ms	366 B
/ul_cb/match?publisher_dsp_id=38&external_user_id=k-uUG8S...	0.0 ms	198 B
/dxjsmodule/7.f7df015b06d8a90ce822.chunk.js?Q_CLIENTVERSI...	604800.0 s	1.4 KiB
/pixel/?ad_log=referer&action=lead&pixid=ca57962d-884d-4b...	0.0 ms	131 B
cdn.jsdelivr.net/gh/prebid/shared-id/pubcid.js/docs/pubcid.min.js	604800.0 s	986 B
image8.pubmatic.com/AdServer/ImgSync?p=161086&rdf=1	0.0 ms	40 B
/tr/?id=1902163596694433&ev=ViewContent&dl=https%3A%2F%2F...	0.0 ms	19 B
/tr/?id=1902163596694433&ev=PageView&dl=https%3A%2F%2Fwww...	0.0 ms	16 B
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	0 B
cdn.flashtalking.com/frameworks/js/api/2/10/html5API.js	86400.0 s	0 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:177.35 source:map[column:59128 line:2 type:source-location url:https://scripts.clarity.ms/0.8.60-beta/clarity.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:45.426 source:map[column:48212 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js urlProvider:network]] map[reflowTime:17.088 source:map[column:102033 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js urlProvider:network]] map[reflowTime:20.065 source:map[column:241855 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js urlProvider:network]] map[reflowTime:0.043 source:map[column:61570 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js urlProvider:network]] map[reflowTime:0.198 source:map[column:86936 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js urlProvider:network]] map[reflowTime:28.88 source:map[column:243529 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js urlProvider:network]] map[reflowTime:0.105 source:map[column:243873 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js urlProvider:network]] map[reflowTime:0.467 source:map[column:290748 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js urlProvider:network]] map[reflowTime:18.453 source:map[column:144483 line:6 type:source-location url:https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js urlProvider:network]] map[reflowTime:94.005 source:map[column:30997 line:7 type:source-location url:https://c.aaxads.com/aax.js?pub=AAX42WKKE&hst=www.cars.com&ver=aax.ver urlProvider:network]] map[reflowTime:0.306 source:map[column:143046 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js urlProvider:network]] map[reflowTime:21.047 source:map[column:575590 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js urlProvider:network]] map[reflowTime:177.35 source:map[column:23219 line:1 type:source-location url:https://scripts.clarity.ms/0.8.60-beta/clarity.js urlProvider:network]] map[reflowTime:39.822 source:map[type:text value:[unattributed]]] map[reflowTime:0.435 source:map[column:265115 line:1 type:source-location url:https://cdn.doubleverify.com/dv-measurements9761.js urlProvider:network]]]

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
fuse-page-section.promotional-items > section > picture > img `fuse-page-section.promotional-items > section > picture > img`	www.cars.com/static/images/BestOf-26_Homepage-Sidekick.webp	71.7 KiB	64.3 KiB
fuse-stack.featured-comparison > a > div.featured-comparison__images > img `fuse-stack.featured-comparison > a > div.featured-comparison__images > img`	/medium/in/v2/stock_photos/e82774af-2ac9-42a4-be6f-2e5c16...	23.9 KiB	19.3 KiB
fuse-stack.featured-comparison > a > div.featured-comparison__images > img `fuse-stack.featured-comparison > a > div.featured-comparison__images > img`	/medium/in/v2/stock_photos/1e28bbd2-f3b8-4866-a78d-7d16a6...	23.4 KiB	18.8 KiB
div.widget > div.widget__img > img `div.widget > div.widget__img > img`	www.cars.com/images/garage-landing/garage-hero.webp	41.6 KiB	18.2 KiB
fuse-page-section.sell-your-car-section > div.sell-your-car-container > div.sell-your-car-image > img `fuse-page-section.sell-your-car-section > div.sell-your-car-container > div.sell-your-car-image > img`	www.cars.com/images/sell/sale-dealer-woman-brand-colors.png	22.0 KiB	17.4 KiB
fuse-stack.featured-comparison > a > div.featured-comparison__images > img `fuse-stack.featured-comparison > a > div.featured-comparison__images > img`	/medium/in/v2/stock_photos/62e0b73a-c333-4a24-9e65-23c7de...	21.8 KiB	17.2 KiB
div.container > div.left > img `div.container > div.left > img`	www.cars.com/images/icon-cars-app.png	16.6 KiB	16.2 KiB
fuse-stack.featured-comparison > a > div.featured-comparison__images > img `fuse-stack.featured-comparison > a > div.featured-comparison__images > img`	/medium/in/v2/stock_photos/dfcacccb-0d1f-4056-b94b-363b63...	20.2 KiB	15.6 KiB
fuse-page-section.research-cars-section > div.research-cars-container > div.research-cars-content > img `fuse-page-section.research-cars-section > div.research-cars-container > div.research-cars-content > img`	www.cars.com/images/binoculars.png	32.2 KiB	13.5 KiB
fuse-stack.featured-comparison > a > div.featured-comparison__images > img `fuse-stack.featured-comparison > a > div.featured-comparison__images > img`	/medium/in/v2/stock_photos/67399961-8f74-4d54-8b21-174db6...	16.9 KiB	12.3 KiB
fuse-stack.featured-comparison > a > div.featured-comparison__images > img `fuse-stack.featured-comparison > a > div.featured-comparison__images > img`	/medium/in/v2/stock_photos/c66fa66d-32d0-4d85-8dba-af6b20...	16.7 KiB	12.1 KiB
ul.featured-tabs-content > li > fuse-card.content-card > img `ul.featured-tabs-content > li > fuse-card.content-card > img`	/medium/in/v2/stock_photos/b89d2a6c-2900-4cb1-bf19-cb841e...	22.3 KiB	11.0 KiB
ul.featured-tabs-content > li > fuse-card.content-card > img `ul.featured-tabs-content > li > fuse-card.content-card > img`	/medium/in/v2/stock_photos/ecbc4cd8-5926-4f8e-b320-56d6e4...	20.0 KiB	8.7 KiB
ul.featured-tabs-content > li > fuse-card.content-card > img `ul.featured-tabs-content > li > fuse-card.content-card > img`	www.cars.com/images/editorial-electric.png	17.9 KiB	6.6 KiB
ul.featured-tabs-content > li > fuse-card.content-card > img `ul.featured-tabs-content > li > fuse-card.content-card > img`	/medium/in/v2/stock_photos/07827872-c533-4f5f-8931-3a9112...	17.8 KiB	6.4 KiB
div.content > div.options > div.online-offer > img `div.content > div.options > div.online-offer > img`	www.cars.com/images/sell/explore-ready-go.png	7.1 KiB	5.5 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 986 ms

URL	Time Spent
cars.com/	986 ms
www.cars.com/	0.0 ms

Diagnostics

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
www.cars.com/	5.7 s	110 ms	6.1 ms
www.cars.com/static/js/common.fc2a09d8fa23803a33b7.js?vsn=d	4.5 s	3.3 s	105 ms
Unattributable	3.2 s	604 ms	0.0 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	2.5 s	1.5 s	72 ms
www.cars.com/8DPpMTkZ/t8G/Oe9/FFucx1oD7K/YrLYcQG2rQp8hGub/ORoxZ2Ms/LiAOb/HY0ISAB	1.2 s	1.1 s	53 ms
www.googletagmanager.com/gtag/js?id=AW-1069770364&cx=c&gtm=4e64k0h1	758 ms	599 ms	47 ms
www.googletagmanager.com/gtm.js?id=GTM-TMPDK9X	748 ms	631 ms	85 ms
c.aaxads.com/aax.js?pub=AAX42WKKE&hst=www.cars.com&ver=aax.ver	748 ms	289 ms	8.7 ms
wsv3cdn.audioeye.com/static-scripts/v2/2026-04-22/startup.bundle.js	739 ms	529 ms	54 ms
scripts.clarity.ms/0.8.60-beta/clarity.js	739 ms	405 ms	12 ms
cdn.doubleverify.com/dv-measurements9761.js	710 ms	628 ms	57 ms
/scripts/fc5726e4774e0929f08557f36e4e5e6dbe0be94107942683...	539 ms	369 ms	127 ms
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	532 ms	368 ms	24 ms
www.googletagmanager.com/gtag/js?id=AW-1014904604&cx=c&gtm=4e64k0h1	502 ms	340 ms	37 ms
www.cars.com/static/js/home.de7a86952bd3b71cde3c.js?vsn=d	496 ms	384 ms	11 ms
/pagead/managed/js/activeview/current/ufs_web_display.js	487 ms	412 ms	29 ms
cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js	474 ms	206 ms	50 ms
www.googletagmanager.com/gtag/js?id=DC-5095325&cx=c&gtm=4e64k0h1	424 ms	386 ms	36 ms
www.cars.com/static/js/socket-common.3c66f9916b22c2fdc36d.js?vsn=d	419 ms	351 ms	13 ms
wsv3cdn.audioeye.com/static-scripts/v2/2026-04-22/compliance.bundle.js	335 ms	183 ms	5.2 ms
www.googletagmanager.com/gtag/js?id=G-0SVYF8BFF1&cx=c&gtm=4e64k0h1	334 ms	279 ms	49 ms
www.cars.com/static/js/vendor/prebid9.53.2.js	334 ms	246 ms	32 ms
www.cars.com/akam/13/4865bb1e	331 ms	295 ms	5.3 ms
ep2.adtrafficquality.google/sodar/sodar2.js	302 ms	53 ms	2.0 ms
sc-static.net/scevent.min.js	282 ms	253 ms	9.4 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js	272 ms	226 ms	43 ms
www.googletagmanager.com/gtag/js?id=DC-4235921&cx=c&gtm=4e64k0h1	238 ms	201 ms	34 ms
www.cars.com/static/js/fuse-card.a9e297b3a698ffdf0a6f.js?vsn=d	216 ms	213 ms	0.9 ms
static.criteo.net/js/ld/ld.js	182 ms	169 ms	8.0 ms
connect.facebook.net/en_US/fbevents.js	180 ms	142 ms	36 ms
tags-cdn.clarivoy.com/common/v4/clarivoy.js	178 ms	166 ms	7.5 ms
www.cars.com/static/js/tabs.fc95fa83c8a408146c52.js?vsn=d	154 ms	117 ms	2.3 ms
www.cars.com/static/js/fuse-svg.f4c62ae092c95216e14b.js?vsn=d	147 ms	137 ms	0.8 ms
/signals/config/1902163596694433?v=2.9.303&r=stable&domai...	142 ms	104 ms	37 ms
static.criteo.net/js/ld/publishertag.ids.js	139 ms	132 ms	6.3 ms
www.cars.com/static/js/fuse-link.b973342a84643c001059.js?vsn=d	134 ms	132 ms	0.9 ms
accounts.google.com/gsi/client	129 ms	93 ms	35 ms
/event?a=3993&v=5.46.0&p0=e%3Dce%26m%3D%255B%255D&p1=e%3D...	124 ms	64 ms	16 ms
/visit.js?gdpr=&gdpr_consent=&flvr=0&ttmms=319&ttfrms=45&...	123 ms	118 ms	0.9 ms
cdn.doubleverify.com/dvtp_src.js	120 ms	114 ms	2.9 ms
launchpad.privacymanager.io/latest/launchpad.bundle.js	115 ms	86 ms	18 ms
/signals/config/1571640443377688?v=2.9.303&r=stable&domai...	114 ms	93 ms	9.7 ms
analytics.tiktok.com/i18n/pixel/static/identify_5cff1caf.js	113 ms	86 ms	27 ms
securepubads.g.doubleclick.net/tag/js/gpt.js	108 ms	90 ms	18 ms
cdn.cookielaw.org/scripttemplates/otSDKStub.js	105 ms	95 ms	2.8 ms
www.cars.com/static/js/6308.83d54859309bf4ca5337.js?vsn=d	98 ms	81 ms	4.8 ms
cdn.id5-sync.com/api/1.0/id5-api.js	88 ms	66 ms	11 ms
www.cars.com/static/js/3775.a475092afc9682f8a5bd.js?vsn=d	88 ms	83 ms	0.5 ms
/v2/scripts/loader.js?h=9f0b3345580a5403a6954d3c4474ac10&...	84 ms	76 ms	2.0 ms
www.cars.com/static/js/fuse-stack.093701c51e599d3bd7bc.js?vsn=d	77 ms	75 ms	1.0 ms
js.adsrvr.org/up_loader.1.1.0.js	63 ms	48 ms	12 ms
/3bb42e03-b088-459d-bfaf-7cb758821653/launchpad-liveramp.js	61 ms	57 ms	1.1 ms
www.cars.com/static/js/fuse-list.94f4e819cf006f9f5d61.js?vsn=d	57 ms	44 ms	0.7 ms
www.cars.com/static/js/fuse-accordion.64d4f9d96a0aa921c137.js?vsn=d	55 ms	53 ms	0.6 ms
/ats-modules/f547f7bb-b2ba-458a-a8d9-dec7dc352829/ats.js	54 ms	42 ms	12 ms
www.cars.com/static/js/cars-global-header.321fb41e11339f434d0d.js?vsn=d	53 ms	48 ms	3.1 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	19.3 s
Style & Layout	6.6 s
Other	4.7 s
Script Parsing & Compilation	1.4 s
Rendering	610 ms
Parse HTML & CSS	606 ms
Garbage Collection	396 ms

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 12.7 KiB

URL	Transfer Size	Est Savings
launchpad.privacymanager.io/latest/launchpad.bundle.js	40.3 KiB	12.7 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 127.8 KiB

URL	Transfer Size	Est Savings
www.cars.com/static/css/common.fc2a09d8fa23803a33b7.css?vsn=d	35.9 KiB	35.9 KiB
@layer legacy-spark{a,abbr,acronym,address,applet,article...	47.1 KiB	35.7 KiB
.display-ad,cars-banner-ad{align-items:center;display:flex;justify-content:center; … } …	22.4 KiB	19.7 KiB
www.cars.com/static/css/home.de7a86952bd3b71cde3c.css?vsn=d	19.3 KiB	19.3 KiB
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} …	20.3 KiB	17.2 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 1.1 MiB

URL	Transfer Size	Est Savings
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB	87.9 KiB
accounts.google.com/gsi/client	95.5 KiB	67.9 KiB
wsv3cdn.audioeye.com/static-scripts/v2/2026-04-22/startup.bundle.js	123.5 KiB	65.1 KiB
www.googletagmanager.com/gtag/js?id=G-0SVYF8BFF1&cx=c&gtm=4e64k0h1	160.9 KiB	64.2 KiB
www.cars.com/static/js/common.fc2a09d8fa23803a33b7.js?vsn=d	144.0 KiB	62.2 KiB
www.googletagmanager.com/gtag/js?id=DC-4235921&cx=c&gtm=4e64k0h1	129.8 KiB	60.8 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js	105.2 KiB	59.6 KiB
cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js	104.3 KiB	54.8 KiB
www.googletagmanager.com/gtag/js?id=DC-5095325&cx=c&gtm=4e64k0h1	131.3 KiB	54.6 KiB
www.googletagmanager.com/gtag/js?id=AW-1014904604&cx=c&gtm=4e64k0h1	137.5 KiB	54.5 KiB
/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-...	80.3 KiB	54.1 KiB
www.googletagmanager.com/gtag/js?id=AW-1069770364&cx=c&gtm=4e64k0h1	145.9 KiB	53.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-TMPDK9X	181.2 KiB	49.0 KiB
www.cars.com/static/js/vendor/prebid9.53.2.js	85.6 KiB	40.2 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	36.7 KiB
www.cars.com/8DPpMTkZ/t8G/Oe9/FFucx1oD7K/YrLYcQG2rQp8hGub/ORoxZ2Ms/LiAOb/HY0ISAB	168.6 KiB	36.0 KiB
cdn.doubleverify.com/dv-measurements9761.js	93.9 KiB	34.1 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	73.1 KiB	31.0 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	73.1 KiB	31.0 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...	30.9 KiB	22.7 KiB
www.cars.com/static/js/socket-common.3c66f9916b22c2fdc36d.js?vsn=d	34.2 KiB	22.6 KiB
/ats-modules/f547f7bb-b2ba-458a-a8d9-dec7dc352829/ats.js	38.6 KiB	22.4 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	35.7 KiB	22.2 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/pagead/managed/js/gpt/m202604160201/pubads_impl.js	187.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-TMPDK9X	181.6 KiB
www.cars.com/8DPpMTkZ/t8G/Oe9/FFucx1oD7K/YrLYcQG2rQp8hGub/ORoxZ2Ms/LiAOb/HY0ISAB	169.5 KiB
www.googletagmanager.com/gtag/js?id=G-0SVYF8BFF1&cx=c&gtm=4e64k0h1	161.0 KiB
www.googletagmanager.com/gtag/js?id=AW-1069770364&cx=c&gtm=4e64k0h1	145.9 KiB
www.cars.com/static/js/common.fc2a09d8fa23803a33b7.js?vsn=d	144.2 KiB
www.cars.com/	140.6 KiB
www.googletagmanager.com/gtag/js?id=AW-1014904604&cx=c&gtm=4e64k0h1	137.5 KiB
www.googletagmanager.com/gtag/js?id=DC-5095325&cx=c&gtm=4e64k0h1	131.4 KiB
www.googletagmanager.com/gtag/js?id=DC-4235921&cx=c&gtm=4e64k0h1	129.8 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
fuse-page-section.sell-your-car-section > div.sell-your-car-container > div.sell-your-car-image > img `fuse-page-section.sell-your-car-section > div.sell-your-car-container > div.sell-your-car-image > img`	www.cars.com/images/sell/sale-dealer-woman-brand-colors.png
fuse-page-section.promotional-items > section > picture > img `fuse-page-section.promotional-items > section > picture > img`	www.cars.com/static/images/BestOf-26_Homepage-Sidekick.webp
ford-ranger-lariat-2025-exterior-cheapest-new-pickups-oem-01 `li.latest-news-card > a.article-card > div.article-image > img.js-lazy-load`	www.cars.com/images/placeholder_10x10.png
hyundai-ioniq-5-limited-2023-14-exterior-charging `li.latest-news-card > a.article-card > div.article-image > img.js-lazy-load`	www.cars.com/images/placeholder_10x10.png
honda-accord-hybrid-2026-03-exterior-profile `li.latest-news-card > a.article-card > div.article-image > img.js-lazy-load`	www.cars.com/images/placeholder_10x10.png
bmw-7-series-2027-06-interior-front-row-oem `li.latest-news-card > a.article-card > div.article-image > img.js-lazy-load`	www.cars.com/images/placeholder_10x10.png

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●Font display

●LCP breakdown

●LCP request discovery

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 38 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 1 animated element found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 160 ms

●Server Backend Latencies 240 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 370 ms

●Avoid large layout shifts 11 layout shifts found

○INP breakdown

100

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

●`[role]`s are contained by their required parent element

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●Select elements have associated label elements.

●ARIA attributes are used as specified for the element's role

●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<frame>` or `<iframe>` elements have a title

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Topics	www.cars.com/static/js/vendor/prebid9.53.2.js line 1, col 39776
SharedStorage	/pagead/managed/js/activeview/current/ufs_web_display.js line 252, col 234
AttributionReporting	www.cars.com/static/js/common.fc2a09d8fa23803a33b7.js?vsn=d line 1, col 75618

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
/ups/58813/fed?gpp_sid=-1&v=1&url=https%3A%2F%2Fwww.cars....	`Failed to load resource: the server responded with a status of 400 ()`
www.cars.com/	`Not signed in with the identity provider.`
/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-... line 1, col 79595	TypeError: Failed to execute 'getComputedStyle' on 'Window': parameter 1 is not of type 'Element'. at Ci.w.resetOnFrameBudgetSchedulerPulse [as compute] (https://wsv3cdn.audioeye.com/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-scanner-esm.js:2:79596) at w.get (https://wsv3cdn.audioeye.com/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-scanner-esm.js:1:10328) at Object.wi [as getCachedComputedStyle] (https://wsv3cdn.audioeye.com/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-scanner-esm.js:2:79679) at https://wsv3cdn.audioeye.com/static-scripts/sites/9f0b3345580a5403a6954d3c4474ac10/active.js:1:319 at e (https://wsv3cdn.audioeye.com/static-scripts/sites/9f0b3345580a5403a6954d3c4474ac10/active.js:1:737) at addFactory (https://wsv3cdn.audioeye.com/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-scanner-esm.js:6:15440) at https://wsv3cdn.audioeye.com/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-scanner-esm.js:6:15819 at Array.forEach (<anonymous>) at so (https://wsv3cdn.audioeye.com/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-scanner-esm.js:6:15807) at new zo (https://wsv3cdn.audioeye.com/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-scanner-esm.js:54:37856)

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Cookie

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Map URL
www.cars.com/static/js/common.fc2a09d8fa23803a33b7.js?vsn=d
www.cars.com/8DPpMTkZ/t8G/Oe9/FFucx1oD7K/YrLYcQG2rQp8hGub/ORoxZ2Ms/LiAOb/HY0ISAB
/static-scripts/m/audioeye-scanner-esm/v11.0.44/audioeye-...	/static-scripts/m/audioeye-scanner-esm/v11.0.44/index.bro...
launchpad.privacymanager.io/latest/launchpad.bundle.js	launchpad.privacymanager.io/latest/launchpad.bundle.js.map

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
www.cars.com/profile/your-garage	Learn more
cookiepedia.co.uk/giving-consent-to-cookies	More information

Format your HTML in a way that enables crawlers to better understand your app’s content.

Crawling and Indexing

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

To appear in search results, crawlers need access to your app.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links are crawlable

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`