Diesel power from Audi

Those who love driving a luxury car with a big diesel engine should put their names down for the Audi A8 4.2 TDi. Its V8 engine produces 326bhp, making it the most powerful diesel saloon car on sale.

This is 51 bhp more than was available in the 4.0 litre TDi. The company claims the car will sprint to 100km/h in less than six seconds, yet have a fuel consumption figure about 10 ...