 The gearbox is made by Getrag in Germany and it is of a 3-axle design, deriving from the Volvo M56 gearbox of the front wheel driven 850 series.There are three variations of the gearbox.There is a version for the cast-iron 4-cylinder engines of the 940 (redblock), the all aluminum 6-cylinder of the 960 (whiteblock), and the version for the Volkswagen 6-cylinder diesel engine D24TIC.