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 emissions system needs attention. I see it as an early warning system that ...

Other warning signs include any corrosion or white or grey deposits around the battery's terminal, which should be cleaned ...

When the check engine light comes on in a vehicle, it’s indicating that there is some issue with the car that should be checked out. It could be something minor, such as the gas cap not being screwed ...

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

Want to extend your car battery's lifespan? Switch off accessories, avoid long stationary periods, and protect your battery ...