Table 1 shows one common power train related problems of the 2018 Mercedes Benz CLA250.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
2018 Cla250 30k miles, leaving the airport the car suddenly felt as if it lost power and slowed un-commanded. It then began to operate normally for the 50+ mph drive home. Upon reaching my neighborhood, the car began to make a clunking, popping sound when under load less than 30 mph. The days after the vehicle continued to experience the same issues every time it was driven. I took the car to a local trusted mechanic and he said it’s the rear differential and most likely failed pre-maturely and it’s not work he can do. He said a rear differential failing with 30k miles would be extremely rare and recommend I reach out to the manufacturer to have it replaced and to keep him updated as to how mercedes handles this. After taking it to mercedes of bellevue the service adviser said this is common on clas and glas since 2014. Even to the point saying he has a gla and hasn’t had the issue yet luckily. After speaking to the service manager at mercedes of bellevue and asking him directly if he has ever heard of a rear differential failing with less than 30,000 miles on the car he said “no”. After bringing my car in the service advisor said “yes, he has have seen a lot fail to the point I worry about it” as he has the same rear differential in his car. My car is 10 months out of time warranty but 20,000 miles under the mileage warranty. Looking online on the Cla250 owners forum this does seem to be a common issue on clas, glas and other models that use this rear differential.