honda.co.jp

Readiness by lane

Green: honda.co.jp. Thin bar: Cars & Automotive peer median.

Priority fixes for honda.co.jp

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

1. Priority 1 · 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.

   Why it matters: Returning visitors and later page views reuse cached files instead of downloading them again.

   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. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: Browser Caching Guide for Website Owners

2. Priority 2 · Harden

   DMARC policy enforces quarantine or reject

   Observed: The DMARC policy for honda.co.jp was p=none, which asks receivers to take no action on failing mail.

   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

3. Priority 3 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 4 external scripts 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

4. Priority 4 · Harden

   Certificate lifetime of 100 days or less

   Observed: The certificate from DigiCert Inc had a 198-day validity period, longer than the 100-day maximum that applies from March 2027.

   What to do: Move to automated issuance and renewal now, while you still have time to test it.

   58% of Cars & Automotive peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

What honda.co.jp already does well

Practices fewer than half of Cars & Automotive peers use.

• Nameservers spread across providersNameservers spread across more than one operator.14% of peers
• Content Security Policy presentContent-Security-Policy present.31% of peers
• HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.41% of peers

What we saw

Homepage checked

https://www.honda.co.jp/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

DigiCert, 198-day validity, expiring 2027-01-22

CDN or edge

Amazon CloudFront

DNS operators

2 self-run or other nameserver domains

HSTS

max-age 365 days, includeSubDomains

DMARC policy

p=none

Homepage HTML

80 KB, gzip

Images on homepage

26 (webp 41, jpg 22, svg 2, png 1)

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

• caranddriver.com74
• carrosp.com.br75
• cinch.co.uk75
• cube.eu75
• yamaha-motor-india.com75

Cars & Automotive readiness benchmark