The Oxygen Sensor (O2 sensor) is the "nose" of your engine’s computer. Positioned in your exhaust system, it constantly ...

O2 sensors help gauge whether the engine is running with too much fuel or air. Here's how much you can expect to pay when ...

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Prime Day is always an advertising blitz of products — what are the good products and what’s crap? At Cult of Mac, we put together the best Amazon Prime Day deals on the products we’ve actually used, ...

Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...

I brought this car used a year ago and have been having trouble since I've purchased it. The alarm system, among other things. Not good.

Consumer Reports receives a wide range of questions from enthusiasts and the auto industry looking for a deeper understanding of the methodology used in the reliability section of our latest Annual ...

This article was updated in November 2025 with new information. You know you’ve earned your DIY stripes when you can stay calm the moment something goes wrong. And with cars, that moment usually ...

If you’re like most car owners, you probably don’t think much about your car’s oxygen sensors until they are causing a problem. But did you know that a bad oxygen sensor can impact your car’s ...