BestCarRank
Mercedes-Benz

2018 Mercedes-Benz C 300 4MATIC

Problems, Recalls & Reliability Report

Excellent Reliability

Quick Summary

The 2018 Mercedes-Benz C 300 4MATIC has 11 owner complaints filed with NHTSA — that's 0.1x the segment average of 80. The most common issue is body/structure problems (27% of all complaints), specifically: 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.

11

Total Complaints

0

Recalls Issued

/5

Safety Stars

0.1x

vs Segment Avg

Known Problems

BODY/STRUCTURE

3 complaints
27%
  • 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
  • ****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
  • ****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
Typical onset: 50K miles Est. repair: $500

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

— NHTSA complaint filing

OTHER

2 complaints
18%
  • 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
  • When I decelerate my brake lights don’t flash to warn the driver behind me that I am potentially slowing down .
Typical onset: 50K miles Est. repair: $500

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

— NHTSA complaint filing

ENGINE

2 complaints
18%
  • 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
  • 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
Typical onset: 50K miles Est. repair: $500

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

— NHTSA complaint filing

AIR BAGS

1 complaints
9%
  • 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.
Typical onset: 50K miles Est. repair: $500

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.

— NHTSA complaint filing

ELECTRICAL

1 complaints
9%
  • 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
Typical onset: 50K miles Est. repair: $500

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

— NHTSA complaint filing

Estimated Repair Costs

BODY/STRUCTURE(~50K mi)
$500
OTHER(~50K mi)
$500
ENGINE(~50K mi)
$500
AIR BAGS(~50K mi)
$500
ELECTRICAL(~50K mi)
$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 11 owner complaints for this specific year, here's what to check or ask about:

  • BODY/STRUCTURE: 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

    Typically appears around 50K miles. Repair cost ~$500

  • OTHER: 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

    Typically appears around 50K miles. Repair cost ~$500

  • ENGINE: 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

    Typically appears around 50K miles. Repair cost ~$500

  • AIR BAGS: 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.

    Typically appears around 50K miles. Repair cost ~$500

  • General: Get a pre-purchase inspection from an independent mechanic ($100-$200)

Mercedes-Benz C 300 4MATIC — Year Comparison

How does 2018 compare to other years? Fewer complaints = more reliable.

Full years-to-avoid analysis →

NHTSA Safety Rating

No NHTSA safety rating available

At a Glance

Complaints
11
Recalls
0
Fire reports
0
Crash reports
0
Injury reports
0
Segment avg
80

Check a Specific VIN

See recalls for YOUR 2018 Mercedes-Benz C 300 4MATIC