Without a diagnostic tool, it's challenging to determine what is wrong with your car and whether to keep driving when a solid ...

Oil is the lifeblood of your vehicle's engine, and that's why leaks aren't something that should be ignored. Here are the ...

When I attended technical school studying automotive service technology many years ago, among the first things my instructor taught us was the basic principles of how an engine works. These principles ...

Whether you know a lot about cars or nothing about them, it's never fun to see the check-engine light—also known as a malfunction indicator light (MIL). This is your car trying to tell you it has ...

We can't leave April behind without sharing CarMD's annual overview of check engine light-related car repair costs and trends. The list is published every April during Car Care Month. The latest CarMD ...

This gas station faux pas will leave you fuming. An automotive enthusiast in Texas was recently filling up when he noticed another customer committing a highly common mistake — an amateur move that ...

Everything, even the smallest of things, can affect the performance of your engine. Whether topping off your fuel tank or driving on motor oil past its expiration date, you're slowly killing your car.