The EXTREME X series is the ‘Dakar Rally for electric vehicles’ but the small number of SUV EVs taking part are very special models, developed for the purpose of the unique competition. They are not what would be available from showrooms, just as F1 cars are not sold to the public.
Volkswagen, however, has shown that even production EVs can take the very rough conditions of off-road racing with a specially prepared Volkswagen ID.4 electric SUV having completed the National Off-Road Racing Association (NORRA) Mexican 1000 race recently.
Standard electric powertrain
The ID.4 was driven by professional racer and Volkswagen brand ambassador, Tanner Foust, and Rhys Millen Racing partially modified a rear-wheel-drive version of the E-SUV model. However, it used a standard powertrain with an 82-kWh battery pack. The radiator was raised several centimetres to improve approach angles and cooling capacity, and additional skid plates of thick steel were added to the undercarriage.
To cope with the demanding conditions and terrain, the suspension was also modified with more travel and ground clearance. Rally-style coil-over struts were fitted to all four wheels along with tubular lower control arms in the front and boxed lower rear links.
Inside the cabin was a roll cage for safety, racing seats and supplemental screens for key data like battery temperature, crucial information to know with the high desert temperatures and constant high speeds.
Biofuel-powered generator for recharging
The ID.4 was one of the 64 vehicles that finished the entirety of the NORRA 1000, out of 90 cars and trucks entered. Stages measured between 53 kms and up to 270 kms over the 1.600-km route. The ID.4 was able to recharge mostly using a portable biofuel-powered generator connected to a 50 kW flat charger. In a couple of instances where the ID.4 was scheduled to be transited to the next stage but the charger was not available, the team towed it behind a chase vehicle for a short distance, using the regenerative braking to add range.
Despite the brutal nature of the Baja wilderness, the only damage suffered by the e-SUV was some cosmetic injury to the rear bumper. All of the vehicle’s key power, battery and control systems performed as expected. The ID.4 was raced mostly in ‘B’ level battery regeneration mode with the standard traction control turned on.
“This was an exciting test of ID.4 technology because no other production-based EV had ever entered this event, let alone completed it,” said Scott Keogh, President & CEO of Volkswagen of America.
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