Ford's Focus RS had a head gasket defect affecting models built 2015–2017. Here's what caused it and what used buyers must ...

In an effort to help meet more restrictive emissions standards, GM launched a technology in 2005 that deactivates engine cylinders during undemanding driving scenarios. Known by both Displacement on ...

When the E46 3 Series first arrived, its four-cylinder petrol engines relied on the aging M43—a simple, eight-valve design that left the 316i and 318i feeling underpowered compared to the six-cylinder ...