hardly worth mentioning
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
56,471 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Mercedes-Benz SL500 fuel system problems

fuel system problem

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2003 Mercedes-Benz SL500 Owner Comments

problem #7

Oct 102012


  • 55,620 miles


The contact owns a 2003 Mercedes-Benz SL500. While driving into the garage, the abc pump warning indicator illuminated and the contact noticed smoke inside the vehicle. In addition, the contact noticed a large amount of hydraulic fluid on the garage floor. The vehicle was towed to a dealer where it was diagnosed that the front and rear axle valve lock, and pressure reservoir for the abc system needed to be repaired and flushed. The vehicle was not repaired. The VIN was not included in NHTSA campaign number: 07V263000 (suspension, engine and engine cooling). The manufacturer was made aware of the failure. The approximate failure mileage was 55,620.

- San Jose, CA, USA

problem #6

Jan 052016


  • 52,000 miles
Here a banging noise behind the seat, took it to a Mercedes Benz repair shop. They informed me the fuel tank baffle is broken free. He said it is very common on this model. But not covered under warranty or recall. It would cont me over $2,500 to repair. Doing some research online at mbworld forum. This happen on almost every car like this. I can not afford to fix this. And I am worried this might blow up or something, since something banging around the the inside of the fuel tank can not be safe, this car runs on premium gasoline. It seems to happen louder when the tank is from 3/4 full to 1/2. if I let it run to low the fuel gauge sticks on empty until I go over a big bump. I believe this is a factory defect as the car only has 60,000 miles on it. I should not have to replace the fuel tank on a car that cost about $100,000 new. But more important, I do not feel this car is safe to drive in this condition. The dealer stated it is not a safety issue, just an annoyance"?"

- Graham, WA, USA

problem #5

Oct 202015


  • 56,408 miles
The contact owns a 2003 Mercedes Benz SL500. While driving at various speeds, an abnormal noise could be heard in the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that the baffle in the fuel take fractured and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 56,408.

- Boca Raton, FL, USA

problem #4

Feb 132015

SL500 8-cyl

  • 114,121 miles


Driving along on 2/14/2015, I hear a banging coming from the back of the car. I notice it only does it when I am excelling or braking. I thought there may be something in the trunk, like a liquid with something floating in it, banging up against the side of the container. After I parked, I checked out the box that I have put in the back of my car. There was nothing there that would make this noise. Upon further investigation, I see that there many complaints against the baffle that is inside the gas tank that comes lose and bangs the sides of the gas tank. This is not acceptable. I will take my car to the shop on Tuesday and see about repairs and having mb pay for it.

- Oakland , CA, USA

problem #3

Sep 022013

SL500 8-cyl

  • 35,000 miles
I filed this complaint months ago and haven't heard a word. The issue is the gas tank baffle has apparently come loose from inside the tank and is creating a bang in the tank vehicle is slowing down and stopping. There was no accident. Mercedes said they haven't heard of this problem but in research this is a problem with 2003-2004 SL500. Is there a safety problem with this baffle being loose in the tank" and why isn't there a recall"

- Heber, UT, USA

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problem #2

Jul 012014


  • 42,000 miles
Baffle in fuel tank started hitting the side of the tank make a noise when fuel tank is 3/4 full or less. Apparently the baffle breaks at one end allowing the baffle to bang against the wall of the fuel cell.

- Toomsuba, MS, USA

problem #1

Jun 052013


  • 40,150 miles
Banging noise inside of the fuel tank.

- Chesterfield, MO, USA

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