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

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 ...

As great as cars can be for getting where you need to go as quickly as possible, they have some drawbacks. Most notable are the repairs that tend to come along with them, which can be every bit as ...

Neither black tape nor a magic marker is the solution when your car or truck's check-engine light comes on. When the light, which is shaped like the outline of an engine, illuminates, do not panic!

For an increasing number of people, the answer to that question is “Facebook Marketplace.”  Many car owners find that the ease of posting ad, the ability to verify buyers, and the ubiquity of Facebook ...

There are few things more distracting when driving than a check engine light, or CEL. The CEL is a vague, catch-all light that indicates there is an error somewhere ...

In order for our cars to carry us to and from our various destinations reliably, all the parts must work together smoothly. The fuel and air intake systems provide the ingredients necessary to power ...

You just know it’s going to be a bad day when the “check engine” light on your car’s dashboard—which usually looks like the profile of a vehicle’s engine—stays on after you’ve started it. That usually ...

The costs of buying a new or used car have climbed in recent years, and so has the average repair bill. If a vehicle purchase or major repair isn’t in the cards (or budget), maintaining the health of ...

One of a Times Square-like array of instrument panel lights that flash on briefly when your car starts – and it's sure to cost you money if it stays on – is the “check engine” icon. For the ...

A 2024 Chevrolet Corvette with under 8,000 miles on the clock needs to go back to the dealership ASAP! The Check Engine light showed up on the dashboard. The owners have already diagnosed the car, but ...