Diesel Hybrid

There are advantages to diesels when delivering constant power for long periods of time, such as suffering less wear while operating at higher efficiency. Combined with hybrid technology, the diesel engine's high torque may offer performance in a car of over 100 mpg US (2.35 litres/100 km). Most diesel vehicles can use 100% pure biofuels (biodiesel), so they can use but do not need petroleum at all. These benefits would also likely apply if diesel-electric hybrids were in use.

Diesel-electric hybrids with parallel drive trains may have a substantial cost disadvantage to other options. Diesel engines are generally more expensive than gasoline equivalents, due to the demands for higher compression (although this also makes diesels more durable). If this "diesel premium" is added to any additional expense for the hybrid, the diesel-electric combination may make the payback period for such vehicles even longer and less feasible for many consumers. In addition, the higher torque of diesel engines may obviate one of the advantages of the electric motors.



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