Bentley has done some test with diesel engines, but they will not be introduced thanks to low sales expectations in US and Japan.
First up is the prejudice against diesels in the U.S. and Japanese markets, which are key to Bentley’s sales. As impressive and efficient and a big diesel engine might be in a big Bentley sedan
, the bias against the oilier fuel is too strong to gamble against, according to Gush.
Second, in diesel-loving Europe, upcoming emissions standards are set to make the cost of diesels much higher. Euro 6 emissions regulations will hit hard against oxides of nitrogen, a particular sore spot for diesel emissions, though particulate regulations will stay at Euro 5 levels.
Instead of moving to diesel power, Bentley will add a more efficient 4.0-liter V-8, already announced in the 2011 Continental GT.