Creator's description:  Learning about your car can save you money on your next visit to the mechanic. Everyone should have a basic knowledge of their car, it's most likely the 2nd biggest investment you will make. Start out with the engine and work your way through the lessons.

CoursePal comments:  This free online course is broken into the various automotive systems including engine, fuel, exhaust and more.  Also includes garage tips and advice tailored to various levels of do-it-yourselfers.  No registration required.