Vehicle Data Hub

2003 Mercedes-Benz C320 problems

NHTSA has received 38 complaints about the 2003 Mercedes-Benz C320, and 18% of them involve electrical system. After that come air bags (11%) and drivetrain & axles (11%).

At a glance

Complaints
38 filed with NHTSA
Most reported
Electrical system 18% of complaints
Crashes and fires
4 and 1
Injuries and deaths
4 and 0
Typical mileage
52,000 miles 26 complaints with mileage

Source: NHTSA owner complaints

Where the complaints are

Share of this model year's complaints by the part of the car involved. One complaint can name more than one part, so the shares can add up to more than 100%.

  • Electrical system 18%
  • Air bags 11%
  • Drivetrain & axles 11%
  • Engine 8%
  • Fuel system 8%
  • Wipers, windshield & visibility 8%
  • Cruise control 5%
  • Lighting 5%
  • Suspension 5%
  • Brakes 3%

When problems show up

Complaints by mileage, 2003 Mercedes-Benz C320 Complaints by odometer reading in 20,000-mile steps. The median is about 52,000 miles. 0k to 20k miles: 4 complaints 20k to 40k miles: 4 complaints 40k to 60k miles: 6 complaints 60k to 80k miles: 2 complaints 80k to 100k miles: 3 complaints 100k to 120k miles: 1 complaints 120k to 140k miles: 2 complaints 140k to 160k miles: 0 complaints 160k to 180k miles: 4 complaints 180k to 200k miles: 0 complaints 200k+ miles: 0 complaints 040k80k120k160k200k miles Typical: 52,000 miles
Based on 26 complaints that include mileage. 54% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles4
20k to 40k miles4
40k to 60k miles6
60k to 80k miles2
80k to 100k miles3
100k to 120k miles1
120k to 140k miles2
140k to 160k miles0
160k to 180k miles4
180k to 200k miles0
200k+ miles0

What the data shows

Among the 26 complaints that report mileage, the typical (median) problem appeared at about 52,000 miles.

Safety-related details: 4 complaints mention a crash; 1 complaint mentions a fire; 4 injuries reported. Its complaints are more severe on average than those of 80% of model years in our database.

It is also covered by 3 safety recall campaigns.

What owners wrote

A few complaints as filed, shortened and with personal details removed. The first ones are among the most serious reports for this model year; the rest are typical.

Tl* the contact owns a 2003 mercedes benz c320. The contact stated that while driving 35 MPH, the contact crashed into the rear of another vehicle and the air bags failed to deploy. A police report was filed. The contact sustained head and chest injuries which required medical attention. The vehicle was destroyed. The manufacturer was notified of the failure. The approximate failure mileage was 50,000.

Reported at 50,000 miles, February 2014 CrashInjury

Mercedes benz possible recall / extended warranty for fuel system... Involving a c class 2003 with same engine as the e class. The car fuel system is totally messed up, will only fill a half tank and runs out of gas because the fuel tank system is not working correctly. Car will not fill. Only one tank taking and sending fuel apparently. Dash is messed up, lights out, fuel system totally messed up. I almost went off a cliff in the car, slid backwards on a hillside when the car ran out of fuel unexpectedly.

Reported at 170,000 miles, December 2016 CrashInjury

Car seat and steering wheel wouldn't adjust with the key put in the ignition..this went on for three days...then the car died..had to get a jump..the service rep says the model# 320 c has a problem with the seat module failing on the passenger and drivers side..when the car was jumped all electrical was working properly and find...took to dealer and they informed me that yes the passenger seat module was bad and also needed a new battery..they also stated that the drivers seat module could go out within the next…

Reported at 13,703 miles, October 2008

On a 2003 c 320 mbnz, the radiator now leaks into the transmission. This is going to require the radiator to be replaced and for the transmission to be flushed. This leaking radiator fluid could have already damaged the transmission, and if so, it will have to be replaced. This problem causes a lack of power and therefore a loss of acceleration. It happens without any warning, often leaving you vulnerable due to the loss of power, a potential accident waiting to happen.

Reported at 47,115 miles, May 2009

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