Diesel fuel gets great mileage. Hybrid cars don’t use diesel. Why don’t manufacturers offer diesel hybrids? That seems like a way to maximize the mileage.
It’s coming. Right now there is the double cost whammy, and only recently has the diesel fuel been up to international quality in the US.
A diesel hybrid would get extremely good mileage, a mid size car like the Mercedes E class would get the same mileage as a Prius. Some performance would be sacrificed, however.
But we will need $5/gallon gas before Americans will feel the urge to buy one in large numbers, since it will have a hefty premium price.
I’m not sure the mileage difference between a conventional diesel and a diesel/hybrid is great enough to justify the additional cost/complexity. A diesel e-class only gets about 35 mpg, but it’s a pretty heavy car. If you compare a VW TDI to a Prius, they get similar mileage and have a similar price. i don’t know if there would be a big market for a hybrid version of the TDI if it only got 5-10 mpg more and cost an extra $3-5000.
The major difference is that gasoline engines are much less efficient at part-load than diesels, so the hybrid can actually make a significant difference. Personally, if I was looking for the maximum cost/benefit, I would just buy a small conventional diesel.
Good points. I think the diesel hybrid would excel for those who spend 50,000+ miles per year behind the wheel driving on the Interstate. Such a diesel would be only 4 cyl, using the battery for the push during acceleration.
The record-seeting 80 mpg hybrids sponsored by the US government under the PNGV were all 3 cyl diesel hybrids, but they would not be very good daily drivers.
Subaru is going to do this, aren’t they? I believe they are researching a 4 cyl. boxer diesel hybrid. I would buy one of these-- my neighbor brews his own diesel!
02 Subaru Outback, 03 Subaru Outback & 72 BMW m/c
Somebody is going to ask you, John: Have you been drinking some of that “diesel” with your neighbor?