How many seat belt complaints does NHTSA have for the 2017 Mercedes-Benz C300?

NHTSA lists 21 seat belt complaints for the 2017 C300, which is 10% of the 216 total complaints filed for that model year.

Is there a recall for seat belts on the 2017 Mercedes-Benz C300?

Yes. Two recalls apply: campaign 17V251000, which covers front seat belt replacement, and campaign 21V032000, which covers front seat belt retraction and damping adjustment.

At what mileage do seat belt problems usually show up on the 2017 C300?

The median mileage at failure reported to NHTSA for seat belt complaints on this model year is 20,000 miles.

Are the seat belt issues linked to any crashes or injuries?

NHTSA data tied to this problem area shows 2 crashes and 3 injuries among the reported complaints.

Do other C300 model years have as many seat belt complaints as 2017?

No. Other years range from 0 to 5 seat belt complaints and 0% to 7% share, while 2017 stands out with 21 complaints and a 10% share.

2017 Mercedes-Benz C300 Seat Belts Problems

NHTSA lists 21 seat belt complaints for the 2017 Mercedes-Benz C300, 10% of all complaints that year, with a median failure mileage of 20,000 miles. Two related recalls (17V251000 and 21V032000) cover front seat belt replacement and retraction issues.

Seat Belts complaints: 21; 10% of 216
Crashes reported: 2
Fires reported: 0
Injuries reported: 3
Median mileage: 20,000 mi
Related recalls: 2

Typical seat belt symptoms owners report

Front seat belt pretensioners fail to tighten or activate when the belt is buckled, sometimes tied to the pre-safe pretensioner feature.
Front driver and passenger seat belts do not fully retract after release and fall to the floor instead of stowing.
Seat belt warning light and chime activate intermittently while driving even though the belt is buckled, with the pretensioner cycling on and off.
Seat belt latch plate fails to click securely into the buckle, requiring a dealer repair.
Rear seat belts fail to lock or the release button will not depress, preventing the belt from being used.
Seat belt gets caught in the door track during retraction, jamming the door and requiring roadside assistance.

When 2017 Mercedes-Benz C300 seat belt complaints were filed

First complaint Sep 28, 2017, latest Dec 2, 2025.

21 complaints filed with NHTSA from Sep 2017 to Dec 2025; peak Jan 2021 (2).

Seat Belts recalls for the 2017 Mercedes-Benz C300

NHTSA 21V032000Jan 29, 2021Seat Belts24,550 vehicles
Seat belts:front:retractor
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2021 C300, 2017-2020 AMG C43, and AMG C63 vehicles. The front seat belts might not fully retract to their stowed position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
Risk: If the seat belt does not fully retract, the occupant may find the operation of the seat belt inconvenient and not wear it, increasing the risk of injury in the event of a crash.
Remedy: MBUSA will notify owners, and dealers will check the retraction function of the front seat belts and adjust the damping foam within the B-pillars, as necessary, free of charge. The recall began February 26, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021020010.
NHTSA 17V251000Apr 11, 2017Seat Belts12,743 vehicles
Seat belts:pretensioner
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017 C300, C300 4Matic, C300 Coupe, C300 Coupe 4Matic, C43 AMG, C43 AMG Coupe, C43 AMG Cabrio, C63 AMG, C63 AMG Coupe, C63S AMG, C63S AMG Coupe, C63S Cabrio, GLC300, GLC300 4Matic, GLC43 AMG, S550, S550 4Matic, S550e, S600, S63 AMG 4Matic, S65, Mercedes-Maybach S550 4Matic, and Mercedes-Maybach S600 vehicles. The affected vehicles have front seat seatbelt pretensioners that may not function properly in the event of a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection," and 209, "Seat Belt Assemblies."
Risk: If the front seat seatbelt pretensioners do not function properly, the seat occupants may not be adequately restrained in the event of a crash, increasing the risk of injury.
Remedy: MBUSA will notify owners, and dealers will replace the front seat belts, free of charge. The recall began October 13, 2017. Owners may contact MBUSA customer service at 1-800-367-6372.

Seat Belts complaints by C300 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

20105 (1%)
20112 (0%)
20121 (0%)
20131 (0%)
20140 (0%)
20152 (1%)
20161 (0%)
201721 (10%)
20181 (1%)
20195 (7%)
20200 (0%)
20210 (0%)
20221 (4%)
20230 (0%)
20240 (0%)
20250 (0%)

Frequently asked questions

How many seat belt complaints does NHTSA have for the 2017 Mercedes-Benz C300?: NHTSA lists 21 seat belt complaints for the 2017 C300, which is 10% of the 216 total complaints filed for that model year.
Is there a recall for seat belts on the 2017 Mercedes-Benz C300?: Yes. Two recalls apply: campaign 17V251000, which covers front seat belt replacement, and campaign 21V032000, which covers front seat belt retraction and damping adjustment.
At what mileage do seat belt problems usually show up on the 2017 C300?: The median mileage at failure reported to NHTSA for seat belt complaints on this model year is 20,000 miles.
Are the seat belt issues linked to any crashes or injuries?: NHTSA data tied to this problem area shows 2 crashes and 3 injuries among the reported complaints.
Do other C300 model years have as many seat belt complaints as 2017?: No. Other years range from 0 to 5 seat belt complaints and 0% to 7% share, while 2017 stands out with 21 complaints and a 10% share.