daihatsu.co.jp

Readiness by lane

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

Priority fixes for daihatsu.co.jp

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

1. 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.

   Guide: CDN 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 300 seconds, 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.

   Guide: Browser Caching Guide for Website Owners

3. Priority 3 · Accelerate

   Modern image formats in use

   Observed: The homepage had 46 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.

   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.daihatsu.co.jp.

   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 daihatsu.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
• HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.41% of peers
• Reachable over IPv6IPv6 address published.42% of peers

What we saw

Homepage checked

https://www.daihatsu.co.jp/

Homepage response

HTTP 200, after 1 redirect

TLS

TLSv1.3, http/1.1

Certificate

DigiCert, 198-day validity, expiring 2027-05-08

DNS operators

Akamai Edge DNS, plus 1 self-run or other nameserver domain

HSTS

max-age 365 days, includeSubDomains

Homepage HTML

38 KB, gzip

Images on homepage

46 (png 33, jpg 11, 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

• bds-bikesensor.net49
• beforward.jp49
• copart.co.uk49
• iaai.com49
• lexus.jp49

Cars & Automotive readiness benchmark