Maintenance

Diesel engines don’t have spark plugs; instead, they use the super-heated air created by their high compression ratios to ignite the diesel fuel as it’s injected into the cylinder.

Perhaps the most direct way to find out if a car is still under warranty is to contact a dealer for that make of car or the manufacturer itself. But there are other ways.

While it’s likely seldom done, some vehicles’ maintenance schedules do include an interval for changing the differential fluid, though perhaps only under “severe service” conditions.

Should you buy a new or used car? It depends on your needs and preferences as a buyer, but there are plenty of good vehicles out there either way.

Limp Mode allows your car to be driven a limited distance at reduced speed when something is wrong and may cause severe damage or stop the vehicle from running.

A ticking noise from your car is most likely related to the engine, but it could also be coming from something else.

Need some advice on buying a dirt-cheap set of used wheels? Here’s what you need to know.

While the possibilities for why your car might seem sluggish can make it difficult to track down the problem, a good place to start is with illuminated warning lights on the instrument panel.

Some automakers furnish complimentary maintenance programs that last anywhere from one to five years from when the car was new, but there are limitations.

Joining its luxury subsidiary, Infiniti, Nissan is rolling out a plan that will provide free oil changes to buyers of its vehicles.