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https://mercedes-benz.com

Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
85
GRADE
B
FIX
2
REVIEW
8
PASS
13
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
34
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
88
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
83
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.75 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

10.21 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

2.08 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.013

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

6.50 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

10.26 s

Page Load Progression

623 ms
1.2 s
1.9 s
2.5 s
3.1 s
3.7 s
4.4 s
5.0 s
Checks
25
13 PASS 8 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.3 MiB of 1.3 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
8024ms total JS execution
FIX
8024ms total JS execution
Warning::
https://www.mercedes-benz.com/en/: 1598ms CPU time
Warning::
https://app.usercentrics.eu/browser-ui/3.107.0/Vir...: 1189ms CPU time
Warning::
Unattributable: 1010ms CPU time
Warning::
https://app.usercentrics.eu/browser-ui/3.107.0/ind...: 995ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-KCK...: 848ms CPU time
Warning::
Third-party scripts: 7014ms (87% of total)

Main Thread Breakdown

Script Evaluation 55% Other 21% Style & Layout 15% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.mercedes-benz.com/en/1598ms477ms3ms3rd
https://app.usercentrics.eu/browser-ui/3.107.0/VirtualServiceItem-4a30b407.js1189ms685ms1ms3rd
Unattributable1010ms311ms0ms1st
https://app.usercentrics.eu/browser-ui/3.107.0/index.module.js995ms773ms4ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KCKZ3Z&l=dataLayer_dag848ms739ms89ms3rd
https://www.googletagmanager.com/gtag/js?id=G-MJBL76H0FY&l=dataLayer_dag&cx=c&gtm=4e68j0519ms432ms84ms3rd
https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/index.js446ms212ms1ms3rd
https://www.mercedes-benz.com/akam/13/2ac99abf264ms216ms6ms3rd
https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/ResizeUpdateMixin-8801c1fc.js263ms166ms0ms3rd
https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/BrandSafeHyphens-8654c00b.js204ms188ms0ms3rd

Showing top 10 of 18 scripts

B
Page Weight Budget
1.3 MB transferred, 119 requests
REVIEW
1.3 MB transferred, 119 requests
Info::
Page weighs 3.1 MB (1.3 MB transferred)
Warning::
JavaScript is 793 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 793 KB
Warning::
119 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.27 g CO2 per page load
1.3 MB / 2.4 MB budget
1.3 MB transferred
119 requests
0.27 g CO2 per page load
JavaScript 793.2 KiB 60%
Images 376.4 KiB 29%
Fonts 110.7 KiB 8%
Other 13.8 KiB 1%
HTML 8.9 KiB 1%
Other 7.0 KiB 1%
CSS 5.4 KiB 0%
Other 1.5 KiB 0%
Other 35 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

B
Image Optimization
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Info::
All images are well-optimized
11 images 376 KB
0 oversized -0 KB
4 legacy format
0 missing dimensions CLS risk
C
JS Bundles
Action
88 scripts, 269 KB unused
REVIEW
88 scripts, 269 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-MJBL...: 68 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-KCK...: 61 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://app.usercentrics.eu/browser-ui/3.107.0/ind...: 54 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.mercedes-benz.com/static/frontend/mbco...: 30 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.oneweb.mercedes-benz.com/npm/vue@2....: 29 KB unused (86%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 269 KB
269 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-MJBL76H0FY&l=dataLayer_dag&cx=c&gtm=4e68j0161 KB68 KB (42%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KCKZ3Z&l=dataLayer_dag144 KB61 KB (42%)✓3rd
https://app.usercentrics.eu/browser-ui/3.107.0/index.module.js121 KB54 KB (45%)✓3rd
https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/index-037bda16.js61 KB30 KB (52%)✓3rd
https://assets.oneweb.mercedes-benz.com/npm/vue@2.7.15/dist/vue.min.js35 KB29 KB (86%)✓3rd
https://app.usercentrics.eu/browser-ui/3.107.0/VirtualServiceItem-4a30b407.js50 KB28 KB (55%)✓3rd
https://app.usercentrics.eu/browser-ui/3.107.0/DefaultData-2ee2f3a3-5a7a01ac.js1 KB—✓3rd
https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/mercedes-benz-9e169fc1.js43 KB—✓3rd
https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/_commonjsHelpers-de833af9.js0 KB—✓3rd
https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/BrandSafeHyphens-8654c00b.js1 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Page Weight Inventory
Action
119 resources · 1.3 MB · 269 KB savings available
REVIEW
119 resources · 1.3 MB · 269 KB savings available
Warning::
Page weight 1.3 MB exceeds 1 MB target by 293 KB
Got: 1.3 MB Expected: ≤ 1 MB
Info::
~269 KB of savings available
Warning::
118 third-party resources (100% of weight)
Info::
1 resources over 200KB
119 resources · 1.3 MiB · 118 third-party 292.8 KiB over 1MB target
JavaScript 60% · 793.2 KiB
Image 29% · 381.6 KiB
Font 8% · 110.7 KiB
Other 1% · 17.1 KiB
Document 1% · 9.0 KiB
CSS 0% · 5.4 KiB

~269.3 KiB of savings available

Remove unused JavaScript: 269.3 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0
REVIEW
max-age=0
Info::
Cache-Control header is set
Got: max-age=0
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0

DirectiveValueMeaning
max-age0Cache for 0 seconds
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
3 fonts (111 KB)
PASS
3 fonts (111 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

111 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 3.8 s LCP 10.2 shttps://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoATitleCond-Regular-Web.woff2MBCorpoATitleCond-Regul... https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoATitleCond-Regular-Web.woff2 — 38.4 KiB — 56 ms — font-display: swaphttps://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoSText-Regular-Web.woff2MBCorpoSText-Regular-We... https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoSText-Regular-Web.woff2 — 36.2 KiB — 125 ms — font-display: swaphttps://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoSText-Bold-Web.woff2MBCorpoSText-Bold-Web.w... https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoSText-Bold-Web.woff2 — 36.0 KiB — 49 ms — font-display: swap
MBCorpoATitleCond-Regul... woff2 swap
Size 38 KB
Load time 56 ms
Start 272 ms
Risk FOUT — text flashes from fallback to web font
MBCorpoSText-Regular-We... woff2 swap
Size 36 KB
Load time 125 ms
Start 272 ms
Risk FOUT — text flashes from fallback to web font
MBCorpoSText-Bold-Web.w... woff2 swap
Size 36 KB
Load time 49 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: max-age=0
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A
JavaScript Blocking
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
Total JS execution time is 8.0 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
119 requests over 2481ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 3.8 s LCP 10.2 shttps://mercedes-benz.com// https://mercedes-benz.com/ — 301 — 967 B — 81 ms — h2https://www.mercedes-benz.com/www.mercedes-benz.com/ https://www.mercedes-benz.com/ — 302 — 948 B — 39 ms — h2https://www.mercedes-benz.com/en/www.mercedes-benz.com/en/ https://www.mercedes-benz.com/en/ — 200 — 8.9 KiB — 125 ms — h2https://app.usercentrics.eu/browser-ui/latest/loader.jsapp.usercentrics.eu/browser-ui/late... https://app.usercentrics.eu/browser-ui/latest/loader.js — 200 — 10.8 KiB — 39 ms — h2https://www.mercedes-benz.com/logos/mb-star-white.svgwww.mercedes-benz.com/logos/mb-star... https://www.mercedes-benz.com/logos/mb-star-white.svg — 200 — 711 B — 113 ms — h3https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoATitleCond-Regular-Web.woff2assets.oneweb.mercedes-benz.com/plu... https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoATitleCond-Regular-Web.woff2 — 200 — 38.4 KiB — 56 ms — h2https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoSText-Regular-Web.woff2assets.oneweb.mercedes-benz.com/plu... https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoSText-Regular-Web.woff2 — 200 — 36.2 KiB — 125 ms — h2https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/index.csswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/index.css — 200 — 3.8 KiB — 304 ms — h3https://www.mercedes-benz.com/system/css/mb-main.csswww.mercedes-benz.com/system/css/mb... https://www.mercedes-benz.com/system/css/mb-main.css — 200 — 1.6 KiB — 369 ms — h3https://assets.oneweb.mercedes-benz.com/npm/vue@2.7.15/dist/vue.min.jsassets.oneweb.mercedes-benz.com/npm... https://assets.oneweb.mercedes-benz.com/npm/vue@2.7.15/dist/vue.min.js — 200 — 34.8 KiB — 126 ms — h2https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/index.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/index.js — 200 — 31.3 KiB — 297 ms — h3https://assets.oneweb.mercedes-benz.com/global/1.9.0/favicon/manifest.jsonassets.oneweb.mercedes-benz.com/glo... https://assets.oneweb.mercedes-benz.com/global/1.9.0/favicon/manifest.json — 200 — 1.5 KiB — 46 ms — h2https://app.usercentrics.eu/browser-ui/3.107.0/index.module.jsapp.usercentrics.eu/browser-ui/3.10... https://app.usercentrics.eu/browser-ui/3.107.0/index.module.js — 200 — 121.1 KiB — 36 ms — h3https://api.usercentrics.eu/settings/W9EMuWHreTLVLi/latest/languages.jsonapi.usercentrics.eu/settings/W9EMuW... https://api.usercentrics.eu/settings/W9EMuWHreTLVLi/latest/languages.json — 200 — 0 B — 124 ms — h2https://api.usercentrics.eu/settings/W9EMuWHreTLVLi/latest/languages.jsonapi.usercentrics.eu/settings/W9EMuW... https://api.usercentrics.eu/settings/W9EMuWHreTLVLi/latest/languages.json — 200 — 589 B — 17 ms — h2https://www.mercedes-benz.com/akam/13/2ac99abfwww.mercedes-benz.com/akam/13/2ac99... https://www.mercedes-benz.com/akam/13/2ac99abf — 200 — 8.4 KiB — 57 ms — h3https://api.usercentrics.eu/settings/W9EMuWHreTLVLi/latest/en.jsonapi.usercentrics.eu/settings/W9EMuW... https://api.usercentrics.eu/settings/W9EMuWHreTLVLi/latest/en.json — 200 — 0 B — 107 ms — h3https://www.googletagmanager.com/gtm.js?id=GTM-KCKZ3Z&l=dataLayer_dagwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-KCKZ3Z&l=dataLayer_dag — 200 — 143.7 KiB — 121 ms — h2https://api.usercentrics.eu/settings/W9EMuWHreTLVLi/latest/en.jsonapi.usercentrics.eu/settings/W9EMuW... https://api.usercentrics.eu/settings/W9EMuWHreTLVLi/latest/en.json — 200 — 8.2 KiB — 19 ms — h3data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACWCAYAAABkW7XSAAAQAElEQVR4AeycCXzVNbbHk3tbyl5AN…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAASwAAACWCAYAAABkW7XSAAAQAElEQVR4AeycCXzVNbbHk3tbyl5AN… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACGFjVEwAAAABAAAAAcMq2TYAAAANS…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACGFjVEwAAAABAAAAAcMq2TYAAAANS… — 200 — 0 B — 0 ms — datahttps://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/EditorialHighlight.ce-35bb407c.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/EditorialHighlight.ce-35bb407c.js — 200 — 3.2 KiB — 348 ms — h3https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/index-037bda16.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/index-037bda16.js — 200 — 61.2 KiB — 453 ms — h3https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/_commonjsHelpers-de833af9.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/_commonjsHelpers-de833af9.js — 200 — 369 B — 143 ms — h3https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/BrandSafeHyphens-8654c00b.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/BrandSafeHyphens-8654c00b.js — 200 — 583 B — 389 ms — h3https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/ResizeUpdateMixin-8801c1fc.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/ResizeUpdateMixin-8801c1fc.js — 200 — 681 B — 338 ms — h3https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/debounce-29e47b15.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/debounce-29e47b15.js — 200 — 629 B — 406 ms — h3https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/toNumber-6c753613.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/toNumber-6c753613.js — 200 — 764 B — 142 ms — h3https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/flowRight-c769dfc9.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/flowRight-c769dfc9.js — 200 — 16.2 KiB — 320 ms — h3https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/TrackingPushService-7f863692.jswww.mercedes-benz.com/static/fronte... https://www.mercedes-benz.com/static/frontend/mbcom-frontend/3.1.15/assets/TrackingPushService-7f863692.js — 200 — 200 B — 138 ms — h3
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 3.8 s LCP 10.2 shttps://mercedes-benz.com// https://mercedes-benz.com/ — 301 — 967 B — 81 ms — h2https://www.mercedes-benz.com/www.mercedes-benz.com/ https://www.mercedes-benz.com/ — 302 — 948 B — 39 ms — h2https://www.mercedes-benz.com/en/www.mercedes-benz.com/en/ https://www.mercedes-benz.com/en/ — 200 — 8.9 KiB — 125 ms — h2https://app.usercentrics.eu/browser-ui/latest/loader.jsapp.usercentrics.eu/browser-ui/late... https://app.usercentrics.eu/browser-ui/latest/loader.js — 200 — 10.8 KiB — 39 ms — h2https://www.mercedes-benz.com/logos/mb-star-white.svgwww.mercedes-benz.com/logos/mb-star... https://www.mercedes-benz.com/logos/mb-star-white.svg — 200 — 711 B — 113 ms — h3https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoATitleCond-Regular-Web.woff2assets.oneweb.mercedes-benz.com/plu... https://assets.oneweb.mercedes-benz.com/plugin/workbench/fonts/2.1.0/WOFF2/MBCorpoATitleCond-Regular-Web.woff2 — 200 — 38.4 KiB — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
87% of JavaScript execution is third-party
First-party Third-party 7014ms · 553KB · $93/mo
www.mercedes-benz.com
Other
Costly
Execution 1598ms
Transfer 9 KB
Monthly Cost $21/mo
app.usercentrics.eu
Other
Costly
Execution 1189ms
Transfer 50 KB
Unused 55%
Monthly Cost $16/mo
app.usercentrics.eu
Other
Costly
Execution 995ms
Transfer 121 KB
Unused 45%
Monthly Cost $13/mo
Google Tag Manager
Tag Manager
Costly
Execution 848ms
Transfer 144 KB
Unused 42%
Monthly Cost $11/mo
Google Tag Manager
Tag Manager
Costly
Execution 519ms
Transfer 161 KB
Unused 42%
Monthly Cost $7/mo
www.mercedes-benz.com
Other
Costly
Execution 446ms
Transfer 31 KB
Monthly Cost $6/mo
www.mercedes-benz.com
Other
Costly
Execution 264ms
Transfer 8 KB
Monthly Cost $4/mo
www.mercedes-benz.com
Other
Costly
Execution 263ms
Transfer 1 KB
Monthly Cost $4/mo
www.mercedes-benz.com
Other
Costly
Execution 204ms
Transfer 1 KB
Monthly Cost $3/mo
www.mercedes-benz.com
Other
Optional
Execution 134ms
Transfer 2 KB
Monthly Cost $2/mo
www.mercedes-benz.com
Other
Optional
Execution 123ms
Transfer 1 KB
Monthly Cost $2/mo
www.mercedes-benz.com
Other
Optional
Execution 104ms
Transfer 1 KB
Monthly Cost $1/mo
www.mercedes-benz.com
Other
Optional
Execution 83ms
Transfer 5 KB
Monthly Cost $1/mo
www.mercedes-benz.com
Other
Optional
Execution 63ms
Transfer 7 KB
Monthly Cost $1/mo
www.mercedes-benz.com
Other
Optional
Execution 63ms
Transfer 0 KB
Monthly Cost $1/mo
www.mercedes-benz.com
Other
Optional
Execution 62ms
Transfer 1 KB
Monthly Cost $1/mo
app.usercentrics.eu
Other
Optional
Execution 57ms
Transfer 11 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.mercedes-benz.com adds 1598ms and costs ~$21/month
  • app.usercentrics.eu adds 1189ms and costs ~$16/month
  • app.usercentrics.eu adds 995ms and costs ~$13/month
  • Google Tag Manager adds 848ms and costs ~$11/month
  • Google Tag Manager adds 519ms and costs ~$7/month
  • www.mercedes-benz.com adds 446ms and costs ~$6/month
  • www.mercedes-benz.com adds 264ms and costs ~$4/month
  • www.mercedes-benz.com adds 263ms and costs ~$4/month
  • www.mercedes-benz.com adds 204ms and costs ~$3/month

87% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.mercedes-benz.com takes 1598ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

app.usercentrics.eu takes 1189ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

55% of app.usercentrics.eu's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

app.usercentrics.eu takes 995ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 848ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 519ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.mercedes-benz.com takes 446ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.mercedes-benz.com takes 264ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.mercedes-benz.com takes 263ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.mercedes-benz.com takes 204ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

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