2018 BMW i3, 2017 Frankfurt Motor Show
As the auto industry plans more electric cars in higher volumes for the 2020s, one of the great debates is whether they will need to be designed from the ground up solely for battery power.
Doing so allows designers to offer larger cabins due to the more compact drive motors and electronics.
One of the best examples of that idea is the upcoming Jaguar I-Pace electric SUV.
The I-Pace design is clearly that of a Jaguar, but its proportions include a shorter nose and longer cabin than would be possible in a gasoline-powered crossover of the same shape and footprint.
VW Group has decided its future electric vehicles will all be built on a dedicated architecture known as MEB, with the first one—the Volkswagen ID hatchback—going into production late next year.
But BMW is going against the flow, following a radical 2016 restructuring of its future electric-car lineup for 2019 and thereafter.
The company believes that the next generations of its two core platforms can serve equally well for vehicles powered by engines—with or without plug-in hybrid capability—and those running exclusively on energy stored in a large underfloor battery pack.
One platform is the next version of the FAAR front-wheel-drive platform that underpins today's Mini Cooper range and BMW X1 small crossover. It now offers all-wheel drive either via mechanical drive or using a rear electric motor.
The other is the CLAR architecture first used for the latest 7-Series and 5-Series large sedans, which has been "re-engineered to accommodate combustion, hybrid, and EV drivetrains," according to Car magazine in the U.K.
We sat down for a brief chat at last week's Detroit auto show with Stefan Juraschek, the head of BMW's Electric Powertrain group. He's a man deeply enmeshed in the plug-in electric vehicles that BMW will launch over the next two to 10 years.
He declined to answer a number of the questions we asked, including the structural specifics of how future vehicles would vary.
But he confirmed BMW believes its two architectures—in the form of "modular kits" of components—are fully capable of serving both cars with powerful engines and those with large battery packs and more compact electric drive motors.
2017 BMW i3 and 2017 BMW i8
Summarizing the conversation, Juraschek's points included:
Juraschek's points continue on the following page.