Mercrusier 3.7 Exhaust Manifold on 2040-parts.com

GM may use diesels in light-duty pickups

General Motors is considering a diesel engine for light-duty versions of its redesigned full-sized pickups. GM North America President Mark Reuss said in an interview that a diesel is among the options for the next-generation Chevrolet Silverado and GMC Sierra, which are due in showrooms next spring. Chrysler Group recently said it is considering a diesel for its light-duty Ram.

Alfa Romeo 4C convertible likely for 2015

Conventional wisdom holds that if you want to take on Porsche's 911, you need a convertible variant. And although Alfa Romeo's often marched to the beat of a wonderfully idiosyncratic drummer, it sounds as if it's hewing to general sporting-car rules of thumb with the 4C. According to a report in Britain's Autocar, sources have confirmed that a 4C convertible will follow the launch of the coupe by about a year.

Porsche Cayenne S Diesel (2012) first pictures

Porsche has equipped its Cayenne SUV with a twin-turbo diesel engine, creating (no surprises here) the Cayenne S diesel. The 4.2-litre bi-turbo oil-burner puts out 376bhp and a rather wholesome 626lb ft of torque. That latter figures bests even the flagship petrol Cayenne Turbo: that car's twin-blown petrol V8 produces 'only' 516lb ft - and costs around £28k more than the Cayenne S Diesel.