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

Modern cars rely on a dense web of sensors to manage everything from fuel delivery to collision avoidance, and when one fails ...

With an EV, you're unlikely to achieve the stated mileage unless you adjust your driving habits and learn the subtleties of ...

Your car’s performance depends on precise control of air, fuel, and spark, and vacuum leaks quietly disrupt that balance.

The Range Rover Sport is, as its name suggests, a sportier alterative to a Range Rover. The two cars share many parts, ...

Noise, vibration, transmission behavior, and braking issues often show up at speed or under load. Buyers should be allowed to ...

Discover how professional racing engine diagnostics reveal hidden problems in your car. Expert insights from Miami's advanced auto repair specialists.

Thinking about a career in semiconductors? It’s a field that’s constantly changing and super important for all ...

I live in New Jersey, one of the states that mandates inspection for all vehicles newer than 1995. My daily driver, a Jeep Cherokee, happens to be a 1996 model year with an OBD-II sensor, meaning I ...

The 2026 season will see huge changes to what Formula One cars look like, how they operate, and ultimately, how races might ...

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