Full details about the Mercedes-Benz SL65 AMG
At the 82nd edition of the Geneva Motor Show, the German automaker Mercedes-Benz has introduced the SL63 AMG and now we have official details about its bigger brother, the SL65 AMG which is the top-ranging model of the SL class. This new model features an aluminum body shell along with other weight-saving measures that the less powerful cousins have, managing to lower the weight of the car by 170kg to 1950kg, which is still a lot in our humble opinion.
Anyway, at the heart of the all-new Mercedes-Benz SL65 AMG is an updated version of the V12 6.0-liter twin-turbocharged engine that powered the older model, but it has suffered a few modifications in the inlet and exhaust systems. While the previous version of the engine managed to deliver 603 hp, the new SL65 AMG packs no less than 621 hp which is more than the SLS model. This amount of horsepower is available between 4800 and 5400 rpm, offering the two-seat roadster a power-to-weight ratio of 318 hp / ton. The maximum torque generated by the engine is limited to 737 lb.-ft which is available between 2300 and 4300 rpm.
This means that the engine produces 91 hp and 111 lb.-ft more than one found in the SL63 AMG which is a V8 5.5-liter twin-turbocharged unit. At the same time, it generates 64 hp and 73 lb.-ft more than the SL63 AMG version fitted with the Performance Package (optional feature), which by the way can’t be ordered for this new SL65 AMG.
This impressive V12 power unit is driving the rear wheels of the car through the company’s seven-speed 7G-tronic automatic gearbox. The engine comes with a whole bunch of BlueEfficiency features, including the automatic stop/start function. As for the SL63 AMG, this one utilizes a less impressive 5G-Tronic gearbox which has been around for a good chunk of time.
Thanks to these hardware modifications, the Mercedes-Benz SL65 AMG is 17% more efficient and is capable of returning 24.4 mpg UK, while CO2 emissions stand at 270 g/km. The car needs only 4 seconds to do the 0-62 mph sprint, which is 0.3 seconds quicker than the SL63 AMG. The maximum top speed achieved by the SL65 AMG is electronically limited to 155 mph.
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