If your car or truck’s check engine light is on, there’s a stumble when accelerating, or if the transmission just isn’t shifting the way you think it should, it’s a good idea to get these potential ...

Q: I am shopping for a used car. What do you think about bringing along a computer scan tool to test the car before buying it? Do you think the dealer or private seller would mind? A: I think scanning ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The check engine light by its nature is vague, just a general indication that ...

Almost all cars made after 1996 have an OBD2 diagnostic port for plugging into and reading trouble codes when a “check engine” light comes on. But some vehicles, particularly German ones made after ...

Viewer-submitted questions for The Car Doctor: Q: I have a 2022 Ram 1500, purchased new, with the 3.6-liter e-Torque V6 engine and about 10,700 miles. It recently developed an odd problem. In normal ...