The cars can be expensive to maintain when compared to other cars. If you do oil changes yourself it will cost you a good $80 and about $120 at the stealership. These cars can have problems like any other car but so far so good with mine. Most of the time it's just little things that people have problems with. Nothing ever really major yet. But when it comes time to do some maintenance that requires dealership work you can expect some high prices. These cars have a lot of Mercedes components so be ready to fork out the $$$. All in all it's a great car and I would never give mine up. Everyone on this forum will point you in the right direction and they are all great people so don't be afraid to ask many questions! Best of luck!