Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
8.24 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
18.28 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
695 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
9.25 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.
18.28 s
Page Load Progression
DPage Weight BudgetAction2.4 MB transferred, 69 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
FJS Execution CostAction3958ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.lancia.com/etc.clientlibs/stellantis-whitelabel/clientlibs/WlUnifiedHeader/resources/js/803.bca044e79cf1028fc553.js | 547ms | 358ms | 15ms | 1st |
| https://www.lancia.com/etc.clientlibs/stellantis-d2-core/clientlibs/stellantis-reuse-fw/core/vendors/gsap.js | 533ms | 222ms | 40ms | 1st |
| Unattributable | 408ms | 8ms | 0ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-59X4WML&l=dataLayerFCA | 372ms | 329ms | 38ms | 3rd |
| https://www.lancia.com/ | 297ms | 20ms | 15ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-K3PWCJ3X&l=dataLayerFCA | 259ms | 206ms | 48ms | 3rd |
| https://st-eu.dynamicyield.com/st?sec=9878387&ref=&scriptVersion=2.93.0&inHead=true&id=0&jsession=28cvjd0b66p8bxohluwby1gpayrt6s54&isSesNew=true&dyid_server=0&ctx=%7B%22type%22%3A%22OTHER%22%2C%22data%22%3A%5B%22%22%5D%7D&noConsent=true | 209ms | 191ms | 2ms | 3rd |
| https://www.lancia.com/etc.clientlibs/stellantis-d2-core/clientlibs/stellantis-reuse-fw/core/vendors/swiper.js | 200ms | 137ms | 8ms | 1st |
| https://www.lancia.com/etc.clientlibs/stellantis-d2-core/clientlibs/stellantis-reuse/core/global-reuse-footer.0a178b87c1e82428785513964ca04488.js | 194ms | 63ms | 6ms | 1st |
| https://cdn-eu.dynamicyield.com/api/9878387/api_static.js | 152ms | 111ms | 33ms | 3rd |
Showing top 10 of 18 scripts
DJS BundlesAction44 scripts, 434 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn-eu.dynamicyield.com/api/9878387/api_static.js | 105 KB | 67 KB (65%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-59X4WML&l=dataLayerFCA | 131 KB | 65 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K3PWCJ3X&l=dataLayerFCA | 138 KB | 62 KB (45%) | ✓ | 3rd |
| https://www.lancia.com/etc.clientlibs/stellantis-d2-core/clientlibs/stellantis-framework/core/vendor.js | 54 KB | 48 KB (88%) | ✓ | 1st |
| https://www.lancia.com/etc.clientlibs/stellantis-whitelabel/clientlibs/WlModalWindow/resources/js/505.b864107b111efa9f060b.js | 95 KB | 43 KB (49%) | ✓ | 1st |
| https://www.lancia.com/etc.clientlibs/stellantis-whitelabel/clientlibs/WlUnifiedHeader/resources/js/505.d9a7ab63a48ad90c7b86.js | 95 KB | 43 KB (49%) | ✓ | 1st |
| https://www.lancia.com/etc.clientlibs/stellantis-d2-core/clientlibs/stellantis-reuse-fw/core/vendors/vendor.js | 70 KB | 40 KB (60%) | ✓ | 1st |
| https://www.lancia.com/etc.clientlibs/stellantis-d2-core/clientlibs/stellantis-reuse-fw/core/vendors/gsap.js | 50 KB | 23 KB (46%) | ✓ | 1st |
| https://assets.adobedtm.com/launch-EN0f42a4515733422993e3459e15089f00.min.js | 70 KB | 22 KB (31%) | ✓ | 3rd |
| https://code.jquery.com/jquery-3.6.0.min.js | 31 KB | 21 KB (68%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
DPage Weight InventoryAction69 resources · 2.4 MB · 434 KB savings availableFIX
~434.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 69 resources | 2.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
AThird-Party Impact29% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
AImage Optimization2 images, 0 KB saveablePASS
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
A+Font Loading6 fonts (522 KB)PASS
Web fonts
6
522 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~261 KB and ~522 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
AResource Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 resource hints configured
Browsers ignore or refetch preloads without an `as` attribute -- the preload effort is wasted. Sample: https://cookielaw.emea.fcagroup.com/CookieLawProduct/resources/generatecss?key=1542. Add the right `as` value (e.g., `as="font"`, `as="image"`, `as="script"`) on each.
Performance issues directly impact user engagement and conversion rates.
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall69 requests over 2088msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 372ms | 131 KB | 50% | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 259ms | 138 KB | 45% | €3/mo | Costly |
st-eu.dynamicyield.com st-eu.dynamicyield.com | Other | 209ms | 3 KB | — | €2/mo | Costly |
cdn-eu.dynamicyield.com cdn-eu.dynamicyield.com | Other | 152ms | 105 KB | 65% | €2/mo | Optional |
assets.adobedtm.com assets.adobedtm.com | Other | 147ms | 70 KB | 31% | €2/mo | Optional |
code.jquery.com code.jquery.com | Other | 53ms | 31 KB | 68% | €1/mo | Optional |
These scripts may cost more than they're worth
- Google Tag Manager adds 372ms and costs ~€4/month
- Google Tag Manager adds 259ms and costs ~€3/month
- st-eu.dynamicyield.com adds 209ms and costs ~€2/month
Google Tag Manager takes 372ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 259ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
st-eu.dynamicyield.com takes 209ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
65% of cdn-eu.dynamicyield.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
68% of code.jquery.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Image Optimization28 images, 2065 KB total, 18 KB wastedINFO
Image Optimization Audit
Total Images
28
Total Size
2065 KB
Oversized
1
Wasted
18 KB