The latter is about an inch less than the BMW M340i. That's the drawback to these coupe-looking liftback sedans like the M440i, there's usually a sacrifice in rear seat space in the name of style.

The BMW 4 Series Gran Coupé is practical ... who want a coupe but don’t want the accompanying sacrifices. The M440i takes that one step further by adding explosive performance to that practicality.