When the check-engine light snaps on, it is not a suggestion, it is your car’s way of saying something in the powertrain or ...

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

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

Your car is making a noise. You order what seems to be the right part. It arrives. It doesn't fit. You return it and order another one. Wrong again.

Can you remove an O2 sensor with a standard wrench? Learn when you need a special socket, what's in a kit, and how thread ...

Getting something for nothing is rare these days, but O2 is bucking the trend this December. The popular UK mobile network - which is now part of Virgin Media - is spreading some serious festive cheer ...

O2 customers are being urged to scrutinise their recent bills after Martin Lewis warned they could have been unfairly stung with hundreds of pounds in charges. The dispute erupted when O2 announced it ...

Martin Lewis has advised anyone with a mobile phone to input their address into a website to instantly determine if their provider offers the best signal. Those using EE, Vodafone, Three, O2, and ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...