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U.S. public vehicle records

2018 Mercedes Benz C 300 4MATIC: complaints, problems and recalls

Explore the records behind recurring owner reports.

Key facts

12 owner complaints analyzed

3 distinct recall campaigns

54,000 mi median reported failure mileage

Scope: 2018 model year. Data snapshot: . 2 complaints include usable failure mileage.

Owner-reported patterns

Most common problems

Structure:Body is the most frequently named component, appearing in 3 of 12 complaints (25.0%). A complaint can name multiple components.

Recurring terms in complaint narratives
TopicMatching reportsShare of complaints
Braking behavior18.3%
Electrical and battery issues18.3%
Steering behavior18.3%

Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.

Component breakdown

Number of unique complaints naming each component. Top eight shown.

Structure:Body
3
Unknown Or Other
3
Engine
2
Structure:Body:Roof And Pillars
2
Air Bags
1
Communication
1
Electrical System
1
Seat Belts
1
Component breakdown data
CategoryCount
Structure:Body3
Unknown Or Other3
Engine2
Structure:Body:Roof And Pillars2
Air Bags1
Communication1
Electrical System1
Seat Belts1

Structure:Body: 3; Unknown Or Other: 3; Engine: 2; Structure:Body:Roof And Pillars: 2; Air Bags: 1; Communication: 1; Electrical System: 1; Seat Belts: 1

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000
0
25,000 to 49,999
1
50,000 to 74,999
1
75,000 to 99,999
0
100,000 to 149,999
0
150,000 and above
0
Reported problems by failure mileage data
CategoryCount
Under 25,0000
25,000 to 49,9991
50,000 to 74,9991
75,000 to 99,9990
100,000 to 149,9990
150,000 and above0

Under 25,000: 0; 25,000 to 49,999: 1; 50,000 to 74,999: 1; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0

25,000 to 49,999 miles has the most reports with usable mileage (1). 10 complaints have missing, zero or invalid mileage.

Complaints over time

Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.

2018
1
2021
1
2023
1
2024
2
2025
1
2026
6
Complaints over time data
CategoryCount
20181
20211
20231
20242
20251
20266

2018: 1; 2021: 1; 2023: 1; 2024: 2; 2025: 1; 2026: 6

Pattern summary

Structure:Body leads the component reports. Braking behavior appears in 1 complaint narratives. Electrical and battery issues appears in 1 complaint narratives. Steering behavior appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.

Calculated from recorded counts. An AI narrative has not been published for this selection.

Examples from the source records

Examples provide context, not a representative sample or a verified diagnosis.

Owner report 11160885 · 2018-12-12 (December 12, 2018)

APPARENTLY THERE IS A RECALL SITUATION THAT INCLUDES MY VEHICLE AND MERCEDES BENZ WASN'T ABLE TO SOLVE IT YET. I BOUGHT THE CAR AFTER THE RECALL HAS BEGAN.

Owner-reported narrative. Look up ODI 11160885 at NHTSA ↗

Owner report 11418776 · 2021-05-27 (May 27, 2021)

The contact owns a 2018 Mercedes-Benz C300 4matic. The contact received notification of NHTSA Campaign Number: 21V058000 (Communication, Electrical System) however, the part to do the recall repair was not yet available. The local dealer was contacted and stated that the equipment needed to perform the repair was not available. The manufacturer was contacted and informed the contact that the repair was an over-the-air software update. The vehicle was not yet repaired, nor was there any way to confirm that the software update was completed. The …

Owner-reported narrative. 49,000 miles reported. Look up ODI 11418776 at NHTSA ↗

Owner report 11503416 · 2023-01-24 (January 24, 2023)

2018 Mercedes C300. P052E check engine code. Positive Crankcase Ventilation failed with less than 28K miles. Common reported problem but not covered after warranty period, even with extended warranty addition. It's a major part of the engine function and 6 hours of labor to replace. Mercedes Benz should cover this type of fault on the design.

Owner-reported narrative. Look up ODI 11503416 at NHTSA ↗

Owner report 11584844 · 2024-04-23 (April 23, 2024)

Very common problem on all Mercedes - code P052E - second time on this car. Engine light, 2nd time on this car. Car is 2018 and has 45k miles. First time it was at 28037 miles. This is a MAJOR issue costing consumers $1500-$2500 to repair and needs a recall from manufacturer

Owner-reported narrative. Look up ODI 11584844 at NHTSA ↗

Owner report 11613561 · 2024-09-09 (September 9, 2024)

car has less than 34,000 miles on it. One day went to drive and the vehicle wouldn't turn and an error message popped up "power steering malfunction, check owners manual" Had it towed to dealer and they said they couldn't find anything wrong with it. According to the dealer, no sign of wear and tear, no physical damage,

Owner-reported narrative. Look up ODI 11613561 at NHTSA ↗

Owner report 11637991 · 2025-01-23 (January 23, 2025)

The contact owns a 2018 Mercedes-Benz C300 4Matic. The contact stated that the front passenger's and driver's side seat belts had failed to retract and return to the stowed position. The contact related the failure to NHTSA Campaign Number: 21V032000 (Seat Belts); however, the VIN was not included. The dealer was notified of the failure and informed the contact that there would be a cost for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mil…

Owner-reported narrative. 59,000 miles reported. Look up ODI 11637991 at NHTSA ↗

Owner report 11733648 · 2026-04-24 (April 24, 2026)

When I decelerate my brake lights don’t flash to warn the driver behind me that I am potentially slowing down .

Owner-reported narrative. Look up ODI 11733648 at NHTSA ↗

Owner report 11739465 · 2026-05-22 (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 knowi…

Owner-reported narrative. Look up ODI 11739465 at NHTSA ↗

Recall history

3 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.

18V608000 · Visibility:Glass, Side/Rear

Reported: 2018-09-11 (September 11, 2018)

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.

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

Remedy: 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.

NHTSA campaign record ↗
18V838000 · Air Bags:Sensor:Occupant Classification

Reported: 2018-11-27 (November 27, 2018)

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.

Consequence: 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.

Remedy: 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.

NHTSA campaign record ↗
18V906000 · Exterior Lighting:Headlights

Reported: 2018-12-19 (December 19, 2018)

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."

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

Remedy: 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.

NHTSA campaign record ↗