Mercedes-AMG has unveiled the SL 43, with the Three-pointed Star brand’s performance arm ushering in a first for production cars – it is equipped with a Formula One-derived electric exhaust gas turbocharger. 

SL 43

“The new Mercedes-AMG SL 43 is now the very first series-produced vehicle with an electric exhaust gas turbocharger,” said Philipp Schiemer, chairman of the board of management of Mercedes‑AMG GmbH. “With this technology, the SL also has an outstanding performance range in its entry-level version. This means that our seemingly smallest SL combines the typical AMG Driving Performance with luxury and comfort at the absolute top level.”

“The operating principle of the electric exhaust gas turbocharger is based on the same technology used by the Mercedes-AMG Petronas F1 Team,” explained the German marque. “An electric motor around four centimetres thin is integrated directly on the turbocharger shaft between the turbine wheel on the exhaust side and the compressor wheel on the intake side. Electronically controlled, this drives the shaft of the turbocharger directly and thus accelerates the compressor wheel before the exhaust gas stream starts to drive it conventionally.”

The sibling to the V8-powered SL 63 and SL 55 is endowed with a 2.0-litre four-cylinder motor, sending 280 kW and 480 Nm of torque exclusively to the rear axle via Benz’s nine-speed AMG Speedshift transmission. According to Mercedes, these figures allow the 1 810 kg roadster to sprint from zero to 100 km/h in 4.9 seconds, before topping out at a top speed of 275 km/h (electronically governed). 

SL 43