Recall 18V608 covers 387 2018 Mercedes-Benz C-Class vehicles for rear-window bonding that can detach. Repair is free at any franchised Mercedes-Benz dealer.
Mercedes-Benz is recalling 387 2018 C 300, AMG C63, AMG C63S, and C 300 4MATIC vehicles because incorrect rear-window bonding can let the glass loosen and detach. A detached window can become a road hazard and increase crash risk, and Mercedes-Benz dealers will complete the free repair.
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What's wrong?
The rear window on the 2018 Mercedes-Benz C 300, AMG C63, AMG C63S, and C 300 4MATIC is bonded into the body opening with adhesive. That bond is what keeps the glass seated while the vehicle moves, flexes, and deals with weather. A glass activator is part of that bonding process because it helps the adhesive attach correctly to the window surface.
On affected vehicles, the rear window bonding activator was not applied as required during production. Without that step, the adhesive bond loses the long-term grip it was designed to have. The rear window can loosen over time and detach from the vehicle.
There is no warning sign before failure. Mercedes-Benz says the customer will not receive an advance warning because of how the bond fails, so the glass can loosen without a noise, warning light, or visible symptom first.
Who's affected?
The scope is limited to C-Class cars with the same side or rear glass visibility component.
| 2018 Mercedes-Benz C 300 | visibility component |
|---|---|
| 2018 Mercedes-Benz AMG C63 | visibility component |
| 2018 Mercedes-Benz AMG C63S | visibility component |
| 2018 Mercedes-Benz C 300 4MATIC | visibility component |
| Units affected | 387 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific car is included.
What's the safety risk?
If the rear window detaches, it can become a road hazard and increase the risk of a crash. There is no warning sign before the bonding fails, so confirm your VIN and schedule the repair soon if included. Repair is free at any franchised Mercedes-Benz dealer.
What should I do?
- Check your VIN to confirm your 2018 Mercedes-Benz C 300, AMG C63, AMG C63S, or C 300 4MATIC is included in this recall.
- Contact a franchised Mercedes-Benz dealer to schedule the free rear-window bonding rework that secures the glass to the vehicle.
- Bring the recall notice if Mercedes-Benz mailed one. If not, reference recall number 18V608 when you call.
- Keep the repair appointment even if the rear window looks secure; the VIN decides whether the bonding repair is needed.
What happens at the repair
At the dealer, a Mercedes-Benz technician reworks the rear window bonding so the glass is secured to the body as intended. The recall repair is free, with parts and labor covered. Out-of-pocket repairs already paid are handled through the new vehicle warranty, not through a separate reimbursement program, because the involved vehicles remained under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| September 11, 2018 | NHTSA published the recall |
|---|---|
| October 26, 2018 | Dealer notification began |
| November 2, 2018 | Owner notification mailed |
| November 2, 2018 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| November 2, 2018 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 18V608?
Recall 18V608 covers 387 2018 Mercedes-Benz C 300, AMG C63, AMG C63S, and C 300 4MATIC vehicles with rear-window bonding that was done incorrectly. The rear window can loosen and detach, creating a road hazard and increasing crash risk.
What should I do if my 2018 Mercedes-Benz C 300, AMG C63, AMG C63S, or C 300 4MATIC is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 18V608. If it is, contact a franchised Mercedes-Benz dealer to schedule the rear-window bonding repair. Reference recall number 18V608 when you call. The dealer repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to fix the defect at no cost, and Mercedes-Benz dealers will rework the rear-window bonding free of charge. Parts and labor are covered for vehicles included in recall 18V608.
What is the safety risk?
The safety risk is that the rear window can detach from the vehicle while driving. A detached window creates a road hazard for other drivers and increases crash risk. The repair path is to have a Mercedes-Benz dealer rework the rear-window bonding for free.
What if I bought my Mercedes-Benz C-Class used?
The free recall repair still applies. Federal recall law follows the vehicle, not the first owner. Check your VIN to confirm whether your specific 2018 Mercedes-Benz C-Class vehicle is included, then call a franchised Mercedes-Benz dealer and reference recall 18V608.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/18V608000 |
|---|---|
| Mercedes-Benz customer service | 1-800-367-6372 |
| NHTSA recall # | 18V608 |
| NHTSA recall # (full) | 18V608000 |
Source documents
-
Download Owner Notification Letter (PDF) - Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 25, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →