Legal
Terms, privacy and disclaimer
Short version: the information here is free, it is offered without warranty, mechanical work is your responsibility, and this site collects as little about you as it can manage.
Who operates this site
This site is run independently. It is not affiliated with, sponsored by or endorsed by any vehicle manufacturer, importer, distributor or retailer, and it does not sell parts. Corrections and enquiries go through the contact page, which reaches the people who maintain the registry.
Disclaimer
The information on this site is derived from public government records and is provided “as is”, without warranty of any kind, express or implied. It is offered for general information and does not constitute technical, mechanical or safety advice.
Nothing on this site establishes that any part fits any vehicle. Shared engine manufacturers and shared displacements are indications of where to look, not statements of compatibility. Verify every component by direct measurement, and where a repair affects braking, steering, fuel or electrical safety, have the work checked by a competent mechanic. You carry the risk of any work you do or have done on your vehicle.
Records may contain errors filed by the original certificate holder, and this site may contain errors of its own. If you find one, please report it.
Data licensing and attribution
The primary sources are works of the United States federal government and are not subject to copyright protection within the United States. They are reproduced here with their source, retrieval date and file hash recorded on the sources page.
The reconciliation — the decisions about which freehand spellings represent the same factory, and the reasoning published alongside them — is this site's own editorial work. You are welcome to cite it with a link.
Trademarks
All manufacturer, importer and brand names are the property of their respective owners. They are used here descriptively, solely to identify the vehicles being described. This site is independent and is not affiliated with, endorsed by or sponsored by any manufacturer, importer, retailer, the EPA or NHTSA.
Privacy
This site has no accounts, no logins and no newsletter sign-up. It asks for nothing about you and stores nothing you type — the identification lookup runs entirely in your browser, and what you search is never sent to a server.
This site is supported by advertising served by Google AdSense. The AdSense script loads on every page. Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the Internet.
You can opt out of personalised advertising by visiting Google Ads Settings, and opt out of some third-party vendors' use of cookies for personalised advertising at www.aboutads.info (US) or www.youronlinechoices.eu (EU). Google explains how it handles this data in How Google uses information from sites or apps that use our services. Visitors in the European Economic Area, the UK and Switzerland are asked for consent before personalised ads are shown, and can change that choice at any time.
Affiliate links, where present, are labelled. Following one may result in a commission being paid to this site at no additional cost to you. Affiliate relationships never determine what the data says.
Acceptable use
Read it, print the gauges, share them, cite the pages. Do not scrape the site wholesale — the underlying federal data is free and linked on the sources page, so take it from there instead. Do not represent this site's output as a fitment guarantee to anyone else.
Changes
These terms may change as the site develops. The data itself is refreshed on the EPA's quarterly cycle, and every data page carries the retrieval date of the records it was built from.