We are talking about a downsized powerplant that is offered in two levels of power: 90 hp, in the MINI One D and One D Clubman and 112 HP in the Cooper D and Cooper D Clubman – and for the first time in the Cooper Convertible.
"Using BorgWarner's advancements in turbocharging technology, modern diesel engines achieve optimum power output and great fuel economy," said Roger Wood, Executive Vice President, BorgWarner. "We are pleased to extend our very successful and long-standing partnership with the BMW Group to the compact car segment."
The turbocharger is controlled by an electric actuator and allows the engine to achieve an average fuel consumption of 61.8 mpg (3.8 liters per 100 km) in both hatchback models and emit 99 grams of CO2 per km.
“With BorgWarner's next generation VTG turbocharger, it was possible to downsize the diesel engine's displacement from 2.0 liters to 1.6 liters while maintaining the optimum ratio between bore and stroke of the combustion chambers. To improve engine response at very low rpm, patented S-shaped guide vanes regulate VTG turbine output by changing the inflow angle and speed at the turbine wheel inlet,” a company release explains.
Compared with diesel engines previously utilized in the MINI, the new four-cylinder units deliver higher maximum torque of 215 Nm and 270 Nm respectively, achieving greater pulling power for an exciting driving experience, while setting a new benchmark in lower fuel consumption.