Hello, we are planning to buy a SLK 250 gasoline from 2014 or 2015 for my wife and the performance is enough for us thick. I am currently driving an S212 350CDI. Are there any known problems with the 250 gasoline engine? What weaknesses do you have to pay attention to? A 6 cylinder would be better for me personally, but with a city share of 70% the smaller engine is just a little more economical. For the long distances and the family we take the combination anyway.