It's the BMW that’ll turn rivals green with envy. The German firm has announced that it will unveil its cleanest, meanest sports concept yet at September’s Frankfurt Motor Show.

Our sources have hinted that the car will be a rear-driven, mid-engined two-seater, inspired by last year’s M1 Homage concept. Plus, it will feature all the latest fuel and energy-saving technologies, including KERS regenerative braking and engine stop-start.

The company also confirmed the concept will be joined by ActiveHybrid versions of the 7-Series and X6, promising over 15 per cent better economy.



With thanks to autoexpress.