The Touareg was in need of the TDI diesel motor as they couldn't pass a gas station with the gas motor. The TDI motor is one of the better small engine diesels in the world but it has some annoying characteristics. The turbo lag, particularly from a starting position can be more than annoying, it can be damn dangerous at a busy intersection. Mine was in a Passat of 2005 vintage.. perhaps they have remedied the problem. The Blue tech diesel found in some Jeeps is a Mercedes product that has consistent power across the spectrum and has torque that could drive a industrial unit. These advanced diesel units make the gas jobs look bad with respect to true economy and green considerations. America's reliance on gas is largely because there are so few diesel pumps at the urban garages and the oil companies are too cheap to do the change overs.