Why it matters: O2 sensors feed critical data to your ECU, helping maintain the ideal air-fuel ratio for performance, efficiency, and emissions control. Reading the signals: Healthy upstream sensors ...

Maintaining your car's engine air filters, spark plugs, tires, and oxygen sensors and ensuring they're all in good shape can ...

There’s reason to be optimistic about the price of used vehicles, which surged during the pandemic and have started to trend downward. But even if you score a great deal on a car, truck or SUV, costly ...