Mercedes-Benz SLS AMG E-CELL Test Drive with David Coulthard
Seen here wearing an ‘AMG lumilectric magno’ paint job, the E-Cell promises to be the world’s first all-electric supercar, trumping the Tesla Roadster in both price and performance. The E-Cell will begin production in 2013.
Power for the E-Cell will be provided by four electric motors – all located at the rear of the vehicle – that are capable of revving to 12,000 rpm. Power for the setup totals 525 horsepower and 649 lb-ft of torque, good enough for a zero-to-62 time of just 4 seconds. For comparison, the gas-powered SLS can hit 62 from a standstill in 3.8 seconds.
Unlike the standard SLS, the E-Cell employs a permanent all-wheel drive system.
The car’s electric power will be provided by a set of lithium-ion batteries, located behind the cockpit and down the center tunnel. Made up of 324 lithium-ion polymer cells, the E-Cell’s batteries are capable of a 480 kW max load.
Due to the addition of all-wheel drive, the SLS’s front suspension had to be redesigned for the E-Cell version. Whereas the standard SLS employs a double wishbone axle, the E-Cell features an independent multilink suspension with pushrod damper struts.
In order to achieve maximum performance while simultaneously cutting weight, the E-Cell is fitted with AMG’s ceramic composite brakes. Measuring 402 x 39 mm at the front and 360 x 32 mm at the rear, the composite brakes are about 40 percent lighter than conventional cast-iron discs.
In addition to mechanical changes, the SLS E-Cell also features a number of styling tweaks to improve aerodynamics. The E-Cell’s front apron has been moved forward and features an extendable front splitter that moves downward by as much as 7 centimeters at speeds over 75mph, improving under body air flow. As no exhaust system was needed for the E-Cell, engineers added a new rear diffusor with a steeper angle, increasing the car’s overall downforce.
AMG 10-spoke light-alloy wheels with smooth surface technology are also part of the E-Cell package, as are more efficient LED headlights. The E-Cell sports a wider radiator grille with transverse slats and new hood-mounted air inlets to aid in cooling.
Of course the car’s interior has also been modified for the electric treatment, with the E-Cell’s cabin featuring a revised instrument cluster, a new 25cm touch screen in the center stack and a three-button setup to engage Drive, Reverse and Drive.