automotique . BMW 6-series 640d M Sport Road Engine Test We wonder if the 640D would achieve both 150 mph and 50mpg in our hands. In the end, failed to hit quite those numbers down the stretch of a mile on the MIRA proving ground, or on our tour route. However, a wind-assisted steering up 146 mph in the MIRA and 46.4mpg on a simulated highway race is far from being bad for a 1840kg coupe.
When
