The drive system featured in the BMW Concept 5 Series ActiveHybrid consists of a straight-six gasoline engine with TwinPower Turbo technology, eight-speed automatic transmission, and an electrical drive system developed specifically for this model fitted between the engine and transmission. An automatic clutch connects the gasoline engine and the electric motors.
Drawing its energy from a high-voltage battery at the back of the car, the electric motor develops maximum output of 40 kW.
The drivetrain technology featured in the BMW Concept 5 Series ActiveHybrid allows all-electric driving in city traffic. An Auto Start Stop function offers additional efficiency by consistently switching off the combustion engine when stopping at the traffic lights, a road junction, or in congested traffic.
The electric motor also offers a boost function, supporting the gasoline engine in generating particularly dynamic drive power for an even more sporting driving experience in the car. The 5 Series hybrid also uses the auxiliary climate control function already featured in the BMW ActiveHybrid 7.
The high-voltage battery developed for this specific concept is fitted within a high-strength special case near the rear axle of the BMW Concept 5 Series ActiveHybrid. This leads to an optimum position in terms of both safety and harmonious weight distribution. An integrated control unit permanently analyses the charge status of the high-voltage battery and controls both the battery charge process by way of Brake Energy Regeneration and the system cooling process.
Apart from the electric motor, the high-voltage battery also