Mercedes-Benz SLK-Class
Current second generation facelifted Mercedes-Benz SLK

According to Automotive News Europe quoting an unnamed source inside Mercedes-Benz, the next generation Mercedes-Benz SLK-Class roadster set to debut in Spring 2010 will come with a diesel variant, likely to be powered by the new 2.2 litre inline-4 twin-turbodiesel engine from the W204 Mercedes-Benz C 250 CDI.

The engine is from the new OM651 family and uses a a combination of small high-pressure turbo for a strong and lag-free low end start-off and a large low-pressure turbo for a higher power output to produce 204 horsepower at 4,200rpm and 500Nm of torque between 1,600 and 1,800rpm. These figures outperform the baseline SLK 200K’s 1.8 litre Kompressor engine with its 184 PS and 250Nm output – double the torque!

With Audi recently putting a 2.0 TDI engine into the Audi TT and this new announcement that the new Mercedes roadster will have a diesel variant, can we expect the a 2.0d version of the next generation BMW Z4 powered by the 204hp, 400Nm 2.0 litre inline-4 turbodiesel found in the BMW 123d? This could be a possibility, considering BMW diesels have even found their way into the BMW 6-Series.