Bentley has long been rumored to be considering the use of diesel engines. The torquey oil-burners would enable Crewe to continue offering the kind of freight-train muscle for which it has become known while living up to the mandate of offering improved fuel economy, and, with the latest developments in particulate filter technology, reduce carbon emissions, as well. The company's marriage to Audi, which has carved out a nice niche for itself in diesel propulsion, seems to be a match made in motor heaven, and now reports suggest that, at long last, the marriage is set to be consummated with the next Arnage sedan.
According to the latest output from the ever-churning rumor-mill, the replacement for the aging Arnage will employ a version of the V12 turbo-diesel used in the current Audi Q7 TDI. With 500 horsepower and 738 lb-ft of torque, the twelve-cylinder oil-burner would prove an ideal power-plant for the big saloon, and could get an even higher output version to join the half-century-old 6 ¾-liter V8 found in 530-horsepower trim in the current Brooklands, all while Bentley continues to toy with ethanol-burning variants of its W12 as previewed in the Continental Supersports show car unveiled just days ago at the Geneva Motor Show and Her Majesty's State Limousine.