It depends on the type of driving undertaken. Petrol Hybrids work well in hilly country and around the city, but it has been proven in real-world tests in this country (Australia) that small(ish)...
e85 ethanol could be mixed with gasoline in specific petrol enginescooking oil could be used to power a dieselelectricityhydrogen is the most recent one to be developed.
There are many factors that effect the fuel efficiency of an automobile. Many factors are related to the engine and the engineering of the components of an engine in an effort to achieve the maximum...
The most fuel effincient car is the Honda Hybrid. --- Hydrogen-fueled cars such as the Honda Clarity FCX and new H2 Mazda RX-8 don't even use gasoline/diesel. Volkswagen Lupo 3L uses 78 miles per US...