The 5 Series consists of the 525i and all-wheel drive 525xi, which use a 215-hp inline 3.0-litre six-cylinder engine; the 530i, 530xi and 530xiT Touring, which use a 3.0-litre inline six that makes 255 hp; the 550i, which carries a 4.8-litre V8; and the M5, which gets its 500 horses from a 5.0-litre V10. All use a six-speed manual transmission, which can be optioned to a six-speed automatic in all models but the M5, which upgrades to a seven-speed.
AWD models use xDrive, a torque management system that switches seamlessly from rear- to all-wheel drive when necessary. It’s a proactive system that uses information from the dynamic stability control and other sensors to determine the possibility of wheel slippage, and powers up or brakes a specific wheel before any start to lose their grip. It also locks the differentials on take-off until the vehicle reaches 20 km/h, for maximum traction.