Diesel engines consume less fuel than comparable sized gasoline engines with fewer emissions to the environment. This is due to the advanced technology and electronically controlled fuel injection leading to improved combustion.

German manufacturer, VDO, supplies diesel systems for many makes of cars.
Under the original name of Siemens VDO, the company developed the common rail system of injection that quickly gained the popularity of car and engine manufacturers. For example, Peugeot, Citroen, Renault, Ford, Nissan and Volvo have all opted for VDO diesel equipment.