With the on-set of the latest engine management and design technology, diesel engines have even greater scope for enhancement, fuel economy and performance than has ever been possible before. Saab already makes a diesels, but from 2003 it makes a better diesel.

A much better diesel: Fiat’s excellent 1.9 JTD unit, in 120 (8v – TiD) and 150bhp (16v- TiD) and 180BHP (16v – biturbo TTiD) forms. In the next video, you can see the power of the diesel engine on the German motorway (Autobahn – German autobahns have no federally mandated speed limit for some classes of vehicles), at a high cruise speed of 200 km/h (124mph):