The current Mercedes-Benz SL is the R232 generation, which was introduced in 2020. It is only available as a convertible and is powered by a 4.0-liter twin-turbocharged V8 engine that produces 469 horsepower and 516 lb-ft of torque. It is available with rear-wheel drive or all-wheel drive. The SL R232 is the most technologically advanced SL yet. 7. Unique Features. Suicide scissor doors and diamond-studded headlights. Displacement. 3.8-liter twin-turbo flat-six. Power. 777 HP. (Info sourced from EVO Magazine) RELATED: Why The Mclaren F1 Expected to sell for up to $2.5m USD. A one-of-75 Mercedes-Benz SLR McLaren Stirling Moss from 2009 has been listed for auction by RM Sotheby's. How many Mercedes McLaren SLR were made? 2,157 cars Over its six-year production run, a total of 2,157 cars were built at McLaren's Technology Center in Woking, England. Only 2,157 SLR's were produced, making it ultra-rare, but of those, only 150 are 722's, meaning that this one up for auction is an absolute unicorn. Related: Mercedes-Benz SLR McLaren: Performance 5cJE.