coches.com

Readiness by lane

Green: coches.com. Thin bar: Cars & Automotive peer median.

Priority fixes for coches.com

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   Certificate has more than 14 days left

   Observed: The certificate from GlobalSign nv-sa was due to expire on 2026-11-03 (10 days after the check).

   Why it matters: An expired certificate makes browsers show a full-page warning. Renewing well ahead of expiry leaves time to fix a failed renewal.

   What to do: Automate renewal with ACME (for example Let's Encrypt or your CDN's managed certificates) and add a renewal review to your release calendar so any certificate inside 21 days of expiry gets attention.

   99% of Cars & Automotive peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Accelerate

   Static files cached for 30 days or more

   Observed: A same-site stylesheet or script was cacheable for no max-age, 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.

   On Cloudflare: Use Cache Rules to set edge and browser TTLs for static file paths.

   55% of Cars & Automotive peers do this.

   Guide: Browser Caching Guide for Website Owners

3. Priority 3 · Accelerate

   Modern image formats in use

   Observed: The homepage had 113 images and none used WebP or AVIF.

   What to do: Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.

   On Next.js: The next/image component serves optimized formats automatically.

   47% of Cars & Automotive peers do this.

   Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

4. Priority 4 · Harden

   DMARC policy enforces quarantine or reject

   Observed: No DMARC record was found at _dmarc.coches.com.

   What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.

   41% of Cars & Automotive peers do this.

   Guide: A Practical Website Health Check for Owners

What coches.com already does well

Practices fewer than half of Cars & Automotive peers use.

• HSTS kept for at least a yearHSTS with a 730-day max-age covering subdomains.41% of peers
• No render-blocking scripts in <head>Head scripts load without blocking.45% of peers

What we saw

Homepage checked

https://www.coches.com/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

GlobalSign, 90-day validity, expiring 2026-11-03

CDN or edge

Amazon CloudFront, Imperva

Platform or framework

Next.js

DNS operators

Cloudflare

HSTS

max-age 730 days, includeSubDomains, preload

Homepage HTML

442 KB, br

Images on homepage

113 (png 319, jpg 56, svg 2)

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

Compare with other Cars & Automotive sites

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• kentekencheck.nl60
• zr.ru61

Cars & Automotive readiness benchmark