A car smelling like burning oil is usually caused by oil leaking onto hot engine parts (like the exhaust manifold) or ...

EPA demands DEF failure data from diesel makers. Investigation could force recalls and software fixes for engines already on U.S. roads. 30-day deadline set.

Even the most ordinary new vehicles undergo a remarkable amount of testing at the hands of fastidious engineers. Take the ...

Let's face it, most engine additives don't really improve performances. If you want to try one that does, here's what you should pick.

Even if you don't plan on ever owning a car with a diesel engine, you may still want to know how they compare to gas engines ...