I have one that I have been developing and using for a few years now. I am willing to share it for non-commercial use at no charge. It is intended primarily for restoration and, although maybe a bit overkill, it will work for ordinary maintenance . You can download the users manual at
https://sailok.com/enfoprefect. Scroll down a screen to a list of projects. At the end of the list is a link to the Cars Database. Click the link to open a new page with a short description of the database. On it there is a link to the manual.
There is also a link to download the application but it is currently broken and I haven't had time to fix it yet. If interested, PM me and I will send the programs. It currently has no facilities for calculating or storing fuel mileage data but that could be added fairly easily.
Oops, it seems that I have some permissions set too tight on my server. I just tried the link and it did not work. I'll try to fix that. Meanwhile, you can just type the url, "sailok.com/enfoprefect", into your browser's location field and it will let you get to the page.