Mercedes-Benz Amg C43, Mercedes-Benz Amg C63, Mercedes-Benz C 300, Mercedes-Benz C300, model years 2017 to 2021. Filed by Mercedes-Benz USA, LLC and reported to NHTSA on 29 January 2021. 24,550 vehicles potentially affected.
What the notice says 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 …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Mercedes-Benz's own number for this recall: 2021020010. That is the number on the owner letter and on the dealer paperwork. 21V032 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 21V032 cover?
- Mercedes-Benz AMG C43, Mercedes-Benz AMG C63, Mercedes-Benz C 300, Mercedes-Benz C300, model years 2017-2021.
- What is wrong with them?
- 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.
- What can happen if it is not put right?
- 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.
- Is there a fix yet?
- Yes, and it is free. 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.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Mercedes-Benz calls this recall 2021020010, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “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.”
affected
in the notice
caught
| Campaign | 21V032 |
|---|---|
| Filed by | Mercedes-Benz USA, LLC |
| System at fault | Seat Belts:Front:Retractor |
| Reported to NHTSA | 29 January 2021 |
| Model years | 2017-2021 |
| Vehicles named | MERCEDES-BENZ AMG C43, MERCEDES-BENZ AMG C63, MERCEDES-BENZ C 300, MERCEDES-BENZ C300 |
What the notice says today
The consequence
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.
The 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.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 451 notices in the record whose component field names seat belts. Across that group the median wait before owners were written to was 48 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
- Mercedes-Benz AMG C43 recalls: 31 US campaigns
- Mercedes-Benz AMG C63 recalls: 30 US campaigns
- Mercedes-Benz C 300 recalls: 46 US campaigns
- Mercedes-Benz C300 recalls: 26 US campaigns
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 21V032, wording as read on 16 September 2026. https://carsmultiverse.com/recall/21v032/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 21V032 on 23 August 2026, they were:
- Defect summary
0de89aa9 - Consequence
60548eae - Remedy
4833d5b1
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 21V032 · how the whole register is watched
This notice names one vehicle among several registers that have written about it. Every notice this site holds for the Mercedes-Benz AMG C43, in all seven, is kept on that vehicle's own page, with the newest in each.
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