When the check-engine light snaps on, it is not a suggestion, it is your car’s way of saying something in the powertrain or ...

Engine cylinders can misfire due to problems with the ignition system, the fuel system, air and compression, or sensors and ...

The world of car diagnostics has changed a lot over the last 50 years. Back in the '70s and earlier, a mechanic's most valuable diagnostic tools were usually their eyes and ears. You could figure out ...

Here are 2025's most popular questions and answers from The Journal's Car Doctor column, from rotating tires to oil changes.

LML, like many other GM product codes, doesn't stand for anything at all, and is merely a sequence of letters meant to denote ...

That fresh set of tires might be sitting for years. Learn the DOT date code, what “too old” means, and when you should walk away ...

If there's an electrical component on the fritz in your car or something that's stopped working entirely, one of the first ...

Ignition coils last far longer than spark plugs and only need replacement when symptoms appear. Here’s how to tell if coils ...

A 763-mile snowstorm is expected to hit the UK in early January, and drivers have been warned to make one vital check before ...

The numbers and letters on a car tire may seem confusing, but they're actually relatively simple once you understand them.

OpenAI CEO Sam Altman has declared a "code red" to prioritize ChatGPT improvements, delaying advertising and AI agent initiatives as Google's Gemini gains ground. Sam Altman issued a "code red" memo ...