2018 Mercedes-Benz C 300 4Matic recalls and problems

The 2018 Mercedes-Benz C 300 4Matic has 3 safety recalls and 13 owner complaints filed with NHTSA. Recall repairs are free at any Mercedes-Benz dealer.

Recalls
3
Complaints
13
Crashes / fires
0 / 0
Injuries / deaths
0 / 0

Recalls may cover only some 2018 Mercedes-Benz C 300 4Matic vehicles. Check your VIN at NHTSA ↗ to see open recalls for your exact car.

2018 Mercedes-Benz C 300 4Matic recalls

Recall 18V-906: Exterior Lighting

Reported Dec 19, 2018 · 2,364 vehicles affected · Mercedes-Benz USA, LLC.

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz C300 and C300 4MATIC vehicles. The headlights on these vehicles may not be properly adjusted. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."

Risk: If the low beam headlight is not properly adjusted, the driver may have reduced visibility, increasing the risk of a crash.

Fix: MBUSA has notified owners, and dealers will inspect the setting of the headlights and adjust them, as necessary, free of charge. The recall began March 12, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019020008.

Recall 18V-838: Air Bags

Reported Nov 27, 2018 · 104,663 vehicles affected · Mercedes-Benz USA, LLC.

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 C300 Cabriolet, C300 Coupe, C300 4Matic Cabriolet, C300, C300 4Matic Coupe, C300 4Matic, C43 AMG Cabriolet, C43 AMG Coupe, C63 S AMG Cabriolet, C350e Plug-In Hybrid, C63 AMG Cabriolet, C63 AMG Coupe, C63 S AMG Coupe, C63 AMG, C63 S AMG, 2018-2019 GLC300 4Matic Coupe, GLC300, GLC63 AMG Coupe, GLC300 4Matic, GLC350e Plug-In Hybrid, GLC43 AMG Coupe, GLC43 AMG, GLC63 S AMG Coupe, and GLC63 AMG vehicles equipped with Audio 20 head units and automatic child seat recognition. The status of the passenger side air bag may not display correctly.

Risk: If the passenger air bag is incorrectly displayed as 'ON' when it is not, a front seat passenger may be unaware that the air bag will not deploy in the event of a crash, increasing their risk of injury.

Fix: MBUSA will notify owners, and dealers will update the audio head unit software, free of charge. The recall began January 3, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2018120009.

Recall 18V-608: Visibility

Reported Sep 11, 2018 · 387 vehicles affected · Mercedes-Benz USA, LLC.

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz C300, C300 4MATIC, C63 AMG, and C63S AMG vehicles. Incorrect bonding of the rear window may cause the window to loosen and detach from the vehicle.

Risk: If the window detaches from the vehicle, it can become a road hazard, increasing the risk of a crash.

Fix: MBUSA will notify owners, and dealers will rework the rear window bonding, free of charge. The recall is expected to begin November 2, 2018. Owners may contact MBUSA customer service at 1-800-367-6372.

2018 Mercedes-Benz C 300 4Matic problems reported by owners

Problem areaReports
Structure5
Unknown or Other4
Engine2
Air Bags1
Electrical System1
Communication1
Steering1
Seat Belts1
Suspension1
Visibility/Wiper1

Most reported parts

  • Structure › Body — 3
  • Structure › Body › Roof and Pillars — 2

Typical mileage at the time of the problem: 59,000 miles (median of owner reports).

Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.

Recent 2018 Mercedes-Benz C 300 4Matic complaints

Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.

Unknown or Other · reported Nov 6, 2026
Driving the freeway and heard a loud bang noise which was my sunroof. It started cracking the whole thing and just flew away the middle part of glass on freeway.
Structure · reported Jul 30, 2026
I have begun noticing symptoms of the adhesive failing, such as excessive wind noise coming from the front roof area and visible gaps/separation between the panel and the vehicle body. This poses a severe safety risk, as the panel could completely detach while driving and become a high-speed road hazard. No warning lights have appeared. The vehicle and component are available for inspection upon request.
Structure · reported Jul 24, 2026
2018 Mercedes C300 - a hole rusted through the rear subframe causing structural safety concerns. This car has been routinely washed weekly and the frame should not have rusted through within only 8 years. This also led to a large repair bill.
Structure · reported Jun 10, 2026
****Please force Merces to recall all VIN's!******* NHTSA ID Number: 23V854000 1) Front glass roof panel came off while driving the car on the freeway. I didn't see or hear anything. When I got out of the car, I saw the entire piece has come off. This has caused my sunroof to malfunction, and it won't close now. I garage my car and barely drive it. I bought it used in Dec. 2021. There was about 46,000 on it in Dec 2021 and now (June 2026) the mileage is 51,000. Yes, the car is available for inspection. 2) I was on the freeway, didn't see it come off. No cars immediately in front or behind me.…
Structure · reported May 22, 2026
Mercedes-benz usa. llc (mbusa) is recalling certain 2014-2020 c-class, cla, gla, s-class. glc, and gle vehicles. please refer to mbusa's recall report for specific vehicle details. the front roof panel located between the windshield and the panoramic sunroof may not have been bonded correctly to the vehicle during a prior repair, allowing the front panel to detach from the vehicle., Consequence A detached roof panel can become a roao hazard, increasing the risk of a crash I went to the dealership about this complaint 2 years ago not even knowing about an official recall of this exact problem.…

Other Mercedes-Benz C 300 4Matic years

Compare all Mercedes-Benz C 300 4Matic years · All Mercedes-Benz models

Frequently asked questions

Does the 2018 Mercedes-Benz C 300 4Matic have any recalls?

Yes — NHTSA lists 3 recalls for the 2018 Mercedes-Benz C 300 4Matic: 18V-906 (exterior lighting), 18V-838 (air bags), 18V-608 (visibility). Not every vehicle is affected, so check your VIN at nhtsa.gov/recalls.

What is the most common problem with the 2018 Mercedes-Benz C 300 4Matic?

Owners report structure problems most often (5 reports), followed by unknown or other (4). The typical mileage when problems were reported is about 59,000 miles.

Are Mercedes-Benz recall repairs free?

Yes. Safety recall repairs are free at authorized Mercedes-Benz dealers, whether you are the first owner or bought the car used.