...The BMW 335d clean diesel sedan arrives in showrooms this month, followed by the BMW X5 clean diesel SUV in January. Before the public has had a chance to decide on the value equation of its first two luxury diesel vehicles in the $40,000 to $50,000 price range, BMW is now considering an even more expensive clean diesel 7-series sedan.
The European 730d is powered by a turbocharged six-cylinder diesel engine and yields 45 miles per gallon. Even with this impressive fuel efficiency, BMW is gambling on a much-improved economy, and the price of gasoline heading back up, by the time the diesel 7-series would arrive sometime in mid-2010.... http://www.hybridcars.com/buying-decision/bmws-7-series-diesel-possibly-headed-us-25304.html
Don’t be fooled by the miles per gallon stats game.
Sure going from 10 to 20 saves a LOT of money on fuel.
Going from 20 to 30 a bit more.
But beyond that, the cost / savings ratio is really bad.