Website readiness profile · Snapshot 23 October 2026
subaru.com
subaru.com's public homepage, certificate and DNS checked against 31 practices and compared with 703 Cars & Automotive sites.
- Readiness index
- 66/100
- Ahead of
- 47%
- Practices observed
- 18/31
- Popularity band
- Top 50K
Cars & Automotive median 66
of measured Cars & Automotive sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: subaru.com. Thin bar: Cars & Automotive peer median.
Enable
95/100
Peers 84
Harden
63/100
Peers 57
Accelerate
45/100
Peers 65
Recover
0/100
Peers 14
Priority fixes for subaru.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
HTTP/2 negotiated
Observed: The TLS handshake selected http/1.1 instead of HTTP/2.
Why it matters: HTTP/2 sends many files over one connection, which speeds up pages with lots of images, styles and scripts.
What to do: Enable HTTP/2 on your CDN or server. Most CDNs do this by default.
90% of Cars & Automotive peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Priority 2 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for 5 hours, short of the 30-day benchmark.
What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.
55% of Cars & Automotive peers do this.
Priority 3 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 1 external script without async or defer.
What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.
45% of Cars & Automotive peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 4 · Harden
Framing restricted
Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.
What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.
55% of Cars & Automotive peers do this.
What subaru.com already does well
Practices fewer than half of Cars & Automotive peers use.
- HSTS kept for at least a yearHSTS with a 365-day max-age.41% of peers
- DMARC policy enforces quarantine or rejectDMARC policy p=reject.41% of peers
- Modern image formats in useWebP or AVIF images detected.47% of peers
What we saw
- Homepage checked
- https://www.subaru.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, http/1.1
- Certificate
- DigiCert, 364-day validity, expiring 2027-02-03
- Platform or framework
- Adobe Experience Manager
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days
- DMARC policy
- p=reject
- Homepage HTML
- 548 KB, gzip
- Images on homepage
- 12 (svg 15)
Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.
Stack and providers
Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.
All 31 checks
Select a gap for the method and fix. How each check works
Not observed 13
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- DNSSEC signed
- security.txt published
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTTP/3 advertised
- Static files cached for 30 days or more
- No render-blocking scripts in <head>
- Reachable over IPv6
- Nameservers spread across providers
Observed 18
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- HTML compressed
- Modern image formats in use
- Offscreen images lazy-loaded
- robots.txt published
- XML sitemap discoverable
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own subaru.com?
Re-run the checks after a change, or verify the site in a free workspace to save reports with history, compare against similar sites and competitors, and track a private action plan. What owners get.
Live status for this site: Status Is Down: subaru.com. This profile covers configuration only.