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The most powerful all-electric BMW model: BMW M is introducing an all-electric performance model to spearhead the new BMW 7 Series range. The BMW i7 M70 xDrive (electric power consumption combined: 23.8 – 20.8 kWh/100 km in the WLTP cycle) is the most powerful model with an all-electric drive system in the overall BMW Group portfolio. Equipped with an electric motor at both the front and rear axle generating a maximum system output of 485 kW/660 hp* and an M-specific chassis, the new BMW i7 M70 xDrive delivers the perfect combination of electric mobility and performance, resulting in a driving experience unique in the luxury segment. The range-topping model of the new BMW 7 Series line-up accelerates from 0 to 100 km/h (62 mph) in 3.7 seconds, making it the fastest all-electric BMW model. Top speed is electronically limited to 250 km/h (155 mph).
Producing the highest output ever for an all-electric car from the BMW Group, the BMW i7 M70 xDrive marks another milestone for BMW M GmbH in its electric mobility transformation. Following the launch of the BMW i4 M50 – BMW M GmbH’s best-selling model worldwide in 2022 – and the BMW iX M60, this is now the company’s third performance model to have an all-electric drive system. The success of electric propulsion among BMW M brand enthusiasts, the consistent expansion of the product offering and the repeated increases in drive system output clearly highlight the huge potential of electric tech to deliver performance that captures the imagination.
The new all-electric performance model from BMW M will make its global debut at the Auto Shanghai international motor show (18–27 April 2023) in China. It will be built at BMW Group Plant Dingolfing, together with all other model variants of the luxury sedan. As well as being the lead plant for luxury models, the production facility in Lower Bavaria is also home to the competence centre for electric drive system production, which manufactures both the electric motors and the high-voltage batteries for all variants of the BMW i7 on site. The worldwide launch of the BMW i7 M70 xDrive will start in the second half of 2023.
* when M Launch Control or the M Sport Boost function is activated.
All-electric BMW M Performance in the luxury segment.
The fifth-generation BMW eDrive technology installed in the BMW i7 is being constantly developed in order to further improve both power output and efficiency. This applies not only to the powertrain and power electronics, but also to the high-voltage battery and charging technology.
The BMW i7 M70 xDrive is equipped with highly integrated drive units at the front and rear axles, which bring together the electric motor, power electronics and transmission within a single, very compact housing. The two motors work according to the principle of an electrically excited synchronous motor. This type of design makes it possible to completely avoid the use of rare earth metals (required for magnetic components) in the manufacture of the rotor.
The most powerful BMW electric motor.
An M-specific configuration of the drive system enables the BMW i7 M70 xDrive’s rear-axle motor, in particular, to achieve unprecedented levels of power density. The drive unit has a six-phase design with a dual inverter. This forms the basis for a very substantial increase in peak output that remains on tap up to high speeds, endowing the BMW i7 M70 xDrive with the power delivery characteristic of M models. The motor’s power density of 2.41 kW/kg represents an increase of 25.5 per cent over the unit that drives the rear axle of the BMW i7 xDrive60 and means that the BMW i7 M70 xDrive is fitted with what is currently the company’s most powerful electric motor.
This new standard-setting figure can be attributed to a BMW Group-patented innovation developed under the umbrella of BMW EfficientDynamics, which uses six excitation windings in the motor’s stator instead of the customary three. The resulting “double excitation” compared with conventional units allows the electric motor to generate an extremely high output, despite its exceptionally light and compact design, and to maintain it continuously into the higher echelons of the speed range. This solution is also far superior to a drive configuration using two motors at the rear axle in terms of both power density and efficiency.
Further information in the press release to download
The BMW i7 M70 xDrive - Highlights
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