For even sportier driving, you can choose between two 6-cylinder engines: the SLK 280 and the new, still more temperamental SLK 350 sports engine. The SLK 280 generates an output of 170 kW (231 hp); the SLK 350 kicks off with an impressive 224 kW (305 hp) and features a high-speed concept with up to 7200 revolutions per minute. Both 6-cylinder engines fascinate with the full sound typical of these engines and deliver more than enough power to provide you with pure driving enjoyment.
(SLK 280: fuel consumption combined: 9.1-9.5 l/100 km, CO2 emissions combined: 216-225 g/km; SLK 350: fuel consumption combined: 9.2-9.5 l/100 km, CO2 emissions combined: 219-227 g/km)[1]