The BMW N63 engine was launched in a mid-sized luxury what?
BMW X6 The BMW X6 is a mid-size luxury crossover by German automaker BMW.
BMW M21 The BMW M21 is a six-cylinder-inline-diesel engine developed by the bavarian engine manufacturer BMW. It uses (indirect) fuel injection and is based on the M20 petrol engine and was produced for BMW by the upper Austrian Steyr engine plant from 1983 to 1991. It was succeeded by the M51.