Testing of the first purely electric BMW sports car is under way, with engineers working to preserve the distinctive dynamic character of an M car in the post-combustion era.
BMW revealed the first images of a mysterious EV prototype last year, giving few details but confirming that it was powered by a pioneering quad-motor, four-wheel drive system capable of “extremely precise” power delivery “within milliseconds”.
Speaking exclusively to Autocar following the recent unveiling of the new BMW M2 Coupé, which is in line to receive similar technology in its next generation, M CEO Frank van Meel hinted that 4WD performance EVs will take the lead from the F90-generation BMW M5 xDrive saloon. That model was controversial on its reveal for adopting a powered front axle but now regarded as one of the best-handling sports saloons of its time.
“The secret behind that,” he said, “is that you have a central controller, or a central logic that controls everything: the rear differential but also the front-to-rear differential and the DCS [Dynamic Stability Control] system.”
Having one system that manages these relationships is crucial because “if you have four systems that try to co-operate, the car drives like a car with four systems that like to co-operate”.
BMW calls this ECU the ‘Hand of God’. It has developed it for deployment on various M cars since it first appeared on the BMW i8 as a means of balancing the output of its petrol and electric powerplants and allowing for advanced torque vectoring to improve handling.
“If you go a step further and look at electric cars with four electric motors, like we have in our very early development car, then of course you can still use the same logic to control the car that drives like an M,” said van Meel. “So I’d say it gives you even more possibilities.”
He highlighted that a powered front axle also allows for greater recuperation of energy under deceleration – potentially a huge boon for electric motorsport. Details of exactly how an electric M car will be marked out from its standard counterparts remain secret, but the top-rung BMW iX M60 SUV and upcoming BMW i7 M70 saloon already have outputs in the region of 600bhp and rapid off-the-mark acceleration, so van Meel’s engineers will be working hard to cultivate a distinct dynamic character for its new family of sports cars.