It started with the reversing camera not working, then engine management light coming on. First time we took it back they said they needed a new part for the camera but fixed the engine management light. Drove out of dealers, camera was working, engine light still on. Back it went, and had this repeated for the next 4 visits. Took it back 2 weeks ago & they said they needed a new sensor but would take 2 weeks to get the part (after they apparently did a full engine strip down) so the car would have to stay there. They did give us a courtacy car but I kicked off & said we will return the car as it's not fit for purpose. Anyway, it should be ready on friday so will see what happens. Their service is terrible. I do agree, older mercs seem to be much better.