HOW B4 FITS IN
BMW M440i xdrive Gran Coupé Power 369bhp Torque 369lb ft Kerb weight 1825kg 0-62mph 4.7sec Top speed 155mph Price £55,695
BMW Alpina B4 Gran Coupé Power 488bhp Torque 538lb ft Kerb weight 1965kg 0-62mph 3.7sec Top speed 187mph Price £80,663
BMW M4 Competition Power 503bhp Torque 479lb ft Kerb weight 1725kg 0-62mph 3.8sec Top speed 180mph Price £76,990