With time the advancement in the engines of MINI was also improved and they are available with 3 different variants. In the field of engine technology, BMC owner of MINI has product expertise. Different models of MINI like MINI Roadster, Clubman and Countryman have the same diesel engines. The MINI Cooper D model is incorporated with a new 1.6-litre turbo diesel which in return delivered 80 kW/110 bhp. In this model, the car's fuel consumption is reduced and power output is increased by 25 percent.
The latest MINI One Diesel model is powered by a 1.6-litre engine which delivers 66 kW/90 bhp. The fuel consumption and CO2 emissions are the same as those of the 80 kW/110 bhp MINI Cooper D. In MINI Cooper D there is a variant of 2 liters of 4-cylinder engine and 6-speed automatic transmission.
MINI launched its first ever electric model, MINI E in the year 2009. This was a 3-door hatchback small family car with an electric motor of 150 kilowatt (200 horsepower) with a lithium ion battery of 35 Kilowatt-hours