I have a 2012 Ford Fiesta five-speed. The check engine light is on, and the computers at AutoZone and Big O say it’s the catalytic converter and oxygen sensors. This will cost me about $850 to fix.

The catalytic converter is undeniably an essential part of a vehicle. The converter has an effect on the performance of your vehicle, and it reduces tailpipe emissions. Without an effective converter, ...

Cars making loud noises are never a good sign and are a particular hassle when the cause of the noise is a missing catalytic converter. Catalytic converters are regularly targeted car parts, sometimes ...

Modern vehicles and the internal combustion engines that power them — well, most of them, that is — have come a long way in recent decades. From inefficient carburetor systems to fuel injection and, ...