Mercedes reveals power-packed range-topping drop-top
The SL65 AMG will be the range-topper of the SL line-up when it arrives in the UK in the Autumn.
The car uses all the weight-saving benefits of the already-announced sisters. These include an aluminium body shell slashing the SL65’s kerb weight to 1950kg from 2120kg.
The twin-turbocharged 6-litre AMG V12 of the previous SL65 is retained, but slightly improved to boost power from 603bhp to 621bhp between 4800 and 5400rpm, resulting in a power-to-weight ratio of 318bhp/tonne. Maximum torque is a rounded 1000 newton metres, or 738lbft.
The potent power – more than 90bhp better than the SL63 AMG – is delivered to the rear wheels through the 7G-Tronic seven-speed automatic gearbox.
This bang up-to-date unit replaces the very dated 5G-Tronic used by the previous SL65 AMG and is part of a BlueEfficiency programme applied to the car, also including automatic stop/start.
Mercedes claims a 17 per cent improvement in fuel economy to a potential 24.4mpg, while CO2 emissions have dropped to 270g/km.
The car’s top speed remains at an electronically-limited 155mph, while the 0-62mph speed of 4.0 seconds shaves three tenths from the performance of the SL63. The car then hits 125mph in 11.8 seconds.
Words by: James Charman