MPG and running costs
Thanks to a relatively low state of tune, the M140i does an impressive 39.8mpg on the combined cycle. A low kerb weight and 8-speed gearbox also help to ensure the BMW is actually one of the most efficient 300-ish horsepower hatches on the market, despite the high cylinder count. Thanks to losing 2 gears over the auto, manual models have a lower combined return of 36.2mpg.
