“We have altered the structure without any loss of rigidity,” said Kahlenberg.
BMW’s flagship four-door will be produced with a range of different drivetrains, including mild-hybrid petrol and diesel as well as a plug-in hybrid and pure-electric units – all powering both axles as standard. Not all are planned to be offered in the UK, though. In fact, BMW has decided to drop petrol engines completely for European markets. They will be indirectly replaced by new petrol-electric plug-in hybrid drivetrains offering electric ranges of over 50 miles.
The sole diesel in the line-up, the 740d xDrive, will arrive in April 2023. It has a newly developed version of BMW’s turbocharged 3.0-liter straight-six diesel with mild-hybrid assistance and Euro-6D compliance.
With a combined 295bhp and 494lb ft of torque, it is claimed to provide BMW’s four-door flagship with a 0-62mph time of 6.3sec and a top speed limited to 155mph together with combined cycle consumption of between 40.9mpg and 47.9mpg and average CO2 emissions of 157-182g / km.
Also planned for the UK next year are the 750e xDrive and M760e xDrive. The two petrol-electric plug-in hybrids run the latest evolution of BMW’s traditional turbocharged 3.0-liter in-line six-cylinder petrol engine in combination with a gearbox-mounted electric motor.
Combined outputs are put at 483bhp and 515lb ft for the 750e xDrive and 563bhp and 590lb ft for the M760e xDrive. BMW quotes 0-62mph times of 4.9sec and 4.3sec respectively and a governed 155mph top speed for both models. In combination with a new 18.7kWh battery, the electric range is put at 52-57 miles for the 750e and 50-52 miles for the M760e, with the top speed in electric mode limited to 87mph in each.
Consumption is put at 235.4-282.5mpg for the 750e and 235.4-256.8mpg for the M760e on the WLTP cycle, with respective average emissions of 25-28g / km and 22-28g / km. Maximum charging capacity has increased from the 3.6kW of the outgoing 7 Series to 7.4kW.