speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time.

Charts Measurement runs Embed a score

tesla.com

https://www.tesla.com/

25 80 73 75 !AXE ✗CWV

Data from Aug 28, 2026, 5:36 PM UTC old

Overall #1,495 Big Tech #15 · 1 measurement · since Aug 28, 2026

Stack

Akamai Hosted by Akamai

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-30 → 2026-08-26).

LCP 3.44 s needs-improvement
INP 187 ms good
CLS 0.040 good

Scores

25
Performance
no change
80
Accessibility
no change
73
Best Practices
no change
75
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 38.35 s — — 38.35 s 38.35 s
CLS Cumulative Layout Shift 0.057 — — 0.057 0.057
TBT Total Blocking Time 4.71 s — — 4.71 s 4.71 s
FCP First Contentful Paint 20.74 s — — 20.74 s 20.74 s
Speed Index 20.74 s — — 20.74 s 20.74 s
TTFB Time to First Byte 634 ms — — 634 ms 634 ms

LCP Subparts lab observed, unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab metrics LCP metric shown above is throttled.

resource load delay 4.00 s
element render delay 1.08 s
time to first byte 446 ms
resource load duration 4 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-30 → 2026-08-26).

Metric p75 Rating Distribution (good / needs work / poor)
LCP CWV 3.44 s needs-improvement 60.9% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run 187 ms good 78.5% good
CLS CWV 0.040 good 89% good
FCP 2.19 s needs-improvement 65.9% good
TTFB 550 ms good 84.4% good

Lab LCP vs Field LCP

Lab 38.35 s
Field p75 3.44 s

The lab LCP is 11.16× the field p75 — real users likely have above-average hardware or network connectivity.

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending LCPINPCLSFCPTTFB
2026-08-22 3.30 s 187 ms 0.040 2.18 s 547 ms
2026-08-15 3.27 s 180 ms 0.040 2.15 s 540 ms
2026-08-08 3.24 s 177 ms 0.040 2.13 s 542 ms
2026-08-01 3.05 s 171 ms 0.030 2.15 s 571 ms
2026-07-25 3.04 s 167 ms 0.030 2.14 s 590 ms
2026-07-18 3.08 s 166 ms 0.030 2.19 s 622 ms
2026-07-11 3.12 s 166 ms 0.030 2.23 s 649 ms
2026-07-04 3.09 s 164 ms 0.030 2.23 s 633 ms
2026-06-27 2.98 s 166 ms 0.030 2.15 s 593 ms
2026-06-20 2.85 s 163 ms 0.030 2.05 s 555 ms
2026-06-13 2.72 s 162 ms 0.030 1.95 s 530 ms
2026-06-06 2.61 s 160 ms 0.030 1.87 s 514 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 12.43 MB — — 12.43 MB 12.43 MB
Requests 191 — — 191 191
Third-party Weight 1.48 MB — — 1.48 MB 1.48 MB
Third-party CPU 466 ms — — 466 ms 466 ms
Unused JS 1.28 MB — — 1.28 MB 1.28 MB
Unused CSS 276 kB — — 276 kB 276 kB

By resource type

  • media 46.6% 5.79 MB · 1 req
  • script 37.2% 4.62 MB · 31 req
  • image 5.6% 693 kB · 53 req
  • other 3.5% 436 kB · 44 req
  • document 2.9% 364 kB · 3 req
  • stylesheet 2.7% 333 kB · 9 req
  • font 1.5% 192 kB · 6 req

Third parties 13 entities

1.48 MB transferred, 466 ms on the main thread.

Google Maps 597 kB · 87 ms CPU
Google Tag Manager 395 kB · 177 ms CPU
Facebook 260 kB · 137 ms CPU
Optimizely 98.2 kB · 50 ms CPU
Google Fonts 80.5 kB · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 20.86 s — — 20.86 s 20.86 s
Long Tasks 20 — — 20 20
DOM Elements 2,782 — — 2,782 2,782
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 5 — — 5 5
A11y Failures 6 — — 6 6
A11y Failing Nodes 49 — — 49 49

Main thread work

script evaluation 10.30 s
style layout 5.91 s
other 2.57 s
script parse compile 961 ms
garbage collection 524 ms
paint composite render 300 ms
parse HTML 299 ms

Axe violations axe-core 4.13.0, full rule set

5 violating nodes across 3 rules, 9 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate region — All page content should be contained by landmarks 3 nodes
  • serious html-has-lang — <html> element must have a lang attribute 1 node
  • moderate landmark-one-main — Document should have one main landmark 1 node

Accessibility failures 6 of 33 audits

  • heading-order — Heading elements are not in a sequentially-descending order 13 nodes
  • aria-required-parent — `[role]`s are not contained by their required parent element 11 nodes
  • button-name — Buttons do not have an accessible name 11 nodes
  • label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 8 nodes
  • aria-allowed-attr — `[aria-*]` attributes do not match their roles 3 nodes
  • image-alt — Image elements do not have `[alt]` attributes 3 nodes

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 6 console errors

Measurement log

Every stored run for this URL, newest first.

When PerfLCPCLSTBTWeight RunsSpreadBenchTook
Aug 28, 2026, 5:36 PM UTC 25 38.35 s 0.057 4.71 s 12.43 MB 1/3 — 2,607 +5% 38.1s

Embed this score

Use this web component to show tesla.com's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://www.tesla.com/"></speedlify2-score>