Fiat

Fiat's most popular small diesel (Panda, Punto, 500L, also licensed into Opel Corsa and Suzuki Swift). Cheap to run, but the turbo and EGR love carbon buildup on short trips.

The classic petrol engine of the Punto and Panda. A simple design, but sensitive to aging O2 sensors and intake manifold leaks with age.

The two-cylinder turbo petrol of the 500 and Panda. An unusual twin is naturally a bit rough at idle, but power loss under boost is a workshop signal.