There are two key numbers you'll find on your car -- the VIN and the Engine number -- and both play key roles in your car's past and future.

Looking for information on how to check the engine size by your VIN. Check out the Drive’s guide to check your car’s engine size by its VIN.

A number of auto parts stores will plug a scanner into the diagnostic link on your vehicle and read any stored fault codes — at no charge.

Here is a sample VIN form a 2005 Chevrolet Malibu Maxx. The final six digits have been changed to zeros. Here are the principal changes planned for the VIN system so that the supply of numbers ...

Code P0172 came up in my 2010 Chevy Malibu. The dealer charged me $100 to troubleshoot the code. I was told that all the sensors were good and to run the gas tank low and fill up with high-octane g… ...