The M440i xDrive Coupe features numerous M brandings and exclusives in addition to offering more horsepower and eBoost 48V mild-hybrid technology. The 430i Coupe boasts a 2.0-liter BMW TwinPower Turbo inline 4-cylinder engine with 255 horsepower, compared to the M440i xDrive Coupe’s 3.0-liter BMW TwinPower Turbo inline 6-cylinder engine with 382 horsepower.