The rear seat belts do not retract once pulled out. Over the course of several days, they slowly work their way back up. No vehicle should have a seatbelt fail; it is even more ridiculous that this part failed in a car that is this expensive or that has had such a long history of safety. It isn't safe for anyone to sit in the back seats because the seat belts are out-stretched so far that a person would be thrown forward a ways before the seatbelts stopped them. That is dangerous.

- Golden Valley, MN, USA

Both rear seat belts will not retract. They are fully extended.

- Boise, ID, USA

It does not retract back at all

- Flower Mound, TX, USA

2 issues: Right side rear seat belt will not retract. Second; after a week in the dealership to fix an A/C unit that cuts out repeatedly, and the assurances that the new harness they installed would fix the problem, it hasn't. even though the outside temps are not into triple digits, it will stop cooling and slowly the air temp rises. I thought that being in slow traffic was the reason, but on the open road and an oat of 74, it did it agsin.

- Oakland, CA, USA

Rear seat belts do not retract

- Wall, NJ, USA

LH rear seat belt does not retract.

- Ann Arbor, MI, USA

Rear left seat belt will not retract.

- Acton, MA, USA

The rear seat belts do not fit snugly and they will not retract after usage. This is a serious safety issue as they are inoperable. Back seat passengers are at risk during driving.

- Grand Rapids, MI, USA

Rear seat belts are loose, seat belts don't hold and don't go back. On both sides in rear. Seat belts stays loose. This is a defect.

- Los Angeles, CA, USA

I had a passenger in the rear of my vehicle and she told me the seat belts did not work. The rear passenger belt would not retract. When I stopped the vehicle we checked both sides and neither rear belts are working. They are all out of the containment system and locked. They will not retract and therefore cannot be used. I contacted mb usa to find out if there is a recall for the seat belts after I went online and found out that this is a very common problem with their vehicles. They told me there is no recall and they referred me back to the dealership. I am about to call the dealership, but I suspect that what I read online is true. They are passing on a defective seat belt to the consumer to repair just as I read online. I am filing this complaint in the hope that you will investigate mb for this issue. I have been a long-time customer of mb, but this may just change my mind.

- Lanham, MD, USA

Rear seatbelt will not retract. Mileage is past warranty coverage & fix is very pricey (approx $800). This is a major safety issue especially with passengers, mostly children, in the back. I googled this & it seems I am not the only one who has this issue. It is wide spread & a fault of the manufacturer. Mercedes should be required to fix this free of charge! please help.

- Fort Myers , FL, USA

Rear seat belts on both sides do not retract. They have not worked since we purchased the car. Although I have found numerous complaints online of this problem, with this make and model, I have not yet found a recall. Please consider an investigation on this issue. As our children are almost always the ones in the back seat, it is their lives at risk from this faulty equipment.

- Fleming Island, FL, USA

The rear passenger and middle passenger seat belts both went slack. Not due to any misuse. Certified preowned warranty expired October 31, 2013. Mercedes covered cost of parts, I picked up cost of labor.

- Darien, CT, USA

Both rear seat belts will not retract. They get stuck fully open.

- Hauppauge, NY, USA

Both rear seat belts will not retract. Dealer wants $1450 to fix them.

- Saint Louis, MO, USA

Rear seat belt won't retract. The rear seat belt behind the driver will not retract.

- Snellville, GA, USA

Rear seat belt won't retract. Many have this problem according to online forums. Very common issue. Mercedes Benz will not cover, vehicle out of warranty. They want over $700 to fix.

- Phoenix, AZ, USA

Rear seat belt will not retract. That seat belt rarely gets used and is clean as a whistle. In reading online forums, this appears to be a common problem with this model.

- Plano, TX, USA