This eight-cylinder engine delivers 422 hp to power 6.800rpm and maximum torque of 540 Nm at 4,500 rpm, ie 62 bhp and 30 Nm more original than the previous V8 Compressor engine of 5.5. NuevoSLK 55 AMG The delay in reaching 100 km / h no more and no less than 4.6 seconds, and its top speed of 250 km / h, but obviously is electronically limited, since the model comes without the limiter, 285 km / h.
To obtain a favorable result, the technicians of the German management had AMG a somewhat particular, the public and trying to not complain so much for the fuel crisis worldwide, the model ultimately is about spending 50% since it can model at low speeds, lower consumption efficiency, leaving this incredible motor “limited” only temporarily at 900 rpm.
If we want to mention the gearbox, we basically agree that it is a seven-speed automatic transmission, AMG Speed shift, including Sport mode, Manual and Efficient, although we can not do it, if the transmission is better now or the original was better, since it is a little uncomfortable, but more efficient.