2003 Mercedes-Benz E500 Problems
- Complaints
- 125filed with NHTSA
- Median mileage
- 90,600miles, 101 complaints with mileage
- Recalls
- 3campaigns on record
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
- NHTSA crash rating
- —overall rating starts with 2011 models
- EPA fuel economy
- 17 mpgcombined, 5.0L 8-cyl RWD · 15 city / 21 hwy
Sources: NHTSA records for the 2003 Mercedes-Benz E500 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
What owners report
Owners of this model year most often describe two patterns: the Sensotronic Brake Control (SBC) system losing power assist and illuminating red brake warnings, and fuel leaks or strong fuel odors traced to the fuel tank and sending unit. Airmatic air suspension failures that drop the car onto its tires are also frequently reported, mostly on cars with well over 60,000 miles.
- Brakes
Brake pedal to the floor / SBC warning
- 32 complaints (26%)
- median 99,500 mi at 12.6 yrs old (30 state mileage)
- filed 2006–2025
Owners describe a red brake warning in the instrument cluster, sometimes with a message about reduced braking, followed by a pedal that travels to the floor or feels very stiff and a much longer stopping distance. Several say the condition cleared after restarting the car and then returned. Complaints commonly state that a dealer diagnosed the SBC hydraulic unit or pump and that the repair was not done, and some mention a warranty extension on the unit. Reported from roughly 45,000 to 190,000 miles, often with no warning and at normal road speeds.
What to check: Ask whether the SBC hydraulic unit has been replaced or covered under the extended warranty program, and have a pre-purchase inspection scan the brake system for stored SBC codes. Confirm the red brake warning does not appear on a test drive.
2 excerpts from owner complaints in NHTSA records
“Vehicle started flashing a red warning sign while driving at which point I lost all brakes it was only right that I used a runaway ramp at the moment otherwise the car would have not stopped. I turned off the vehicle and then upon restarting everything brake related disappeared. Also this has happened a few times already.”
NHTSA complaint #11350363, filed 2020-08, 146,753 miles“As I were driving on a side road, suddenly a warning red light came on the dash flashing the brake sign. Soon after a message started to flash warning me to turn off vehicle. As I were proceeding to pull to a safe place, I pressed on the brake and found to my surprise that I had pressed on a soft pedal. Lucky I had kept my kool, and managed to pull over on a side street and brought the car to a stop.”
NHTSA complaint #10654901, filed 2014-11, 106,191 miles - Fuel system
Fuel smell and leaks at tank / sending unit
- 39 complaints (31%)
- median 95,500 mi at 10.6 yrs old (30 state mileage)
- filed 2011–2020
Complaints describe a strong raw gasoline odor inside and around the car, most noticeable after filling the tank or when parked in a garage. Owners who inspected or had the car checked report fuel pooling on top of the tank or a crack at the fuel sending unit or tank top, leaking onto the ground. Some say a dealer replaced the fuel sending unit or tank, others report being told no recall applied, and a warranty extension on certain fuel tank components is mentioned in the complaint record. Mostly reported between about 50,000 and 150,000 miles, typically after refueling or while parked.
What to check: After filling the tank, check for a fuel smell inside the cabin and around the rear seat area, and look under the rear seat and above the tank for pooling fuel. Ask whether the sending unit or tank has been replaced and whether the fuel tank component warranty extension applies to the car.
2 excerpts from owner complaints in NHTSA records
“Strong smell of gasoline in cabin of vehicle and outside on drivers side after filling up the night prior. The car was not topped off . Online search for cause of this problem found this is common among w211 mercedes vehicles. This car is new to me, this is the first time I fueled the car.”
NHTSA complaint #10558057, filed 2014-01, 104,700 miles“I have had this problem for a while now. When I fill up my fuel tank there is a drastic smell of gas. I believe this is a safety issue. I had to leave my car out on the street in fear my water heater when igniting would set off a explosion. I am sure mb knows of this situation since I have seen numerous remarks and instances on just this subject. I would hope that mb will address this problem. I took it to the dealer and indeed they said that the fuel sending unit has a crack on top allowing the fuel to leak when filled up to the full mark. …”
NHTSA complaint #10671778, filed 2015-01, 147,102 miles - Suspension
Airmatic suspension drops / 'car too low'
- 15 complaints (12%)
- median 76,358 mi at 10.7 yrs old (13 state mileage)
- 1 mention a crash, fire or injury
- owner-quoted repair $2,850 (median of 7 quotes)
- filed 2008–2024
Owners describe the car suddenly sitting very low on one corner or at both ends, sometimes while driving, with a 'stop, car too low' warning on the dash. Complaints say a shop diagnosed a failed air strut, a blown air bladder, or a leaking Airmatic system, and that struts and sometimes the compressor were replaced, with several reporting repeat failures. A few describe the car pulling or the tire contacting the fender after the drop. Reported from about 40,000 to 196,000 miles, with many between 60,000 and 100,000 miles; some say it happened overnight while parked.
What to check: Let the car sit overnight and check for a sagging corner or a low ride height at start-up, and listen for the compressor running longer than usual. Ask whether any air struts or the compressor have been replaced and when.
2 excerpts from owner complaints in NHTSA records
“2003 E500 with 64000mls, my front air suspension strut bottomed out failed wile driving at normal speed.took the car to mercedes and it was out of warranty; we replaced the 2 front shocks and compressor but 3 weeks later my back shocks failed to. Total cost o repairs $3500 and still not driving alright harsh driving and lots of vibration.”
NHTSA complaint #10269057, filed 2009-05, 62,000 miles“I was traveling on I-65 from lafayette to indianapolis in my 2003 e-500 mercedes- benz. Driving at highway's posted 70 MPH speed the car suddenly pulled from the fast, left line that I was traveling into the right line casing the other vehicle traveling on the right line to turn into an emergency shoulder and consequently in to the ditch in collision avoidance maneuver. …”
NHTSA complaint #10351139, filed 2010-08, 36,000 miles - Transmission and drivetrain
Harsh or delayed transmission shifting
- 16 complaints (13%)
- median 81,777 mi at 9.8 yrs old (15 state mileage)
- filed 2008–2020
Complaints describe rough or heavy shifts, sudden downshifts, and occasional delayed or unexpected acceleration from a stop, with symptoms sometimes worse in cold weather. One owner reports the shifter failing to move out of gear until the car was restarted. Mercedes service bulletins address shift quality and harsh engagement on this transmission, including software and adaptation procedures. Reported around 40,000 to 110,000 miles; one owner noted the behavior was more noticeable in winter.
What to check: Test drive from cold, including a stop-and-go start, and note whether shifts are harsh or slow to engage. Ask whether the transmission has been serviced and whether any shift-quality software update or adaptation was performed.
2 excerpts from owner complaints in NHTSA records
“In june of 2010 I purchased a 2003 mercedes benz E500. The car at times would shift heavy and at times would shift down suddenly or accelerate suddenly and dramatically when the accelerator was press lightly from a stop. The problem continued to the present time and has gotten worse now in the winter months. I know the car is a potential danger but have no other alternative but to drive it. Please help!”
NHTSA complaint #10372340, filed 2010-12, 81,777 miles“As I was merging on to the highway from another highway at about 40mph, I had to speed up because of the traffic that was coming towards me and also to blend in with the rest of the cars speeds. I went to accelerate, but nothing happened. Let off the gas, and then punched the pedal all the way, but still no sign of acceleration. I kept my foot on the gas and about 3 seconds later, the car began slowly to speed up...one MPH at a time. It took some time to make it so 65mph. After reaching that speed, I tried some troubleshooting. …”
NHTSA complaint #10424560, filed 2011-09, 80,950 miles
Buying note. On this model year, the most consequential things to verify are the SBC brake unit's service history and coverage, the fuel tank and sending unit, and the condition of the air suspension. A pre-purchase inspection that scans for stored brake and SRS codes, plus a cold-start test drive, will tell you more than mileage alone.
Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.
NHTSA recorded 125 consumer complaints for the 2003 Mercedes-Benz E500. 101 of the complaints include a mileage, and 12% of those were filed for vehicles with under 50,000 miles; the median is 90,600 miles. Of all complaints, 4 involved a crash, 6 an injury, according to the filers. NHTSA lists 3 recall campaigns and 76 technical service bulletins for this model year.
Not compared (before 2008). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Fuel system41 33%
- Brakes38 30%
- Suspension19 15%
- Transmission and drivetrain10 8.0%
- Air bags7 5.6%
- Other or unknown5 4.0%
- Engine cooling4 3.2%
- Electrical system2 1.6%
Also reported: Equipment (2), Vehicle speed control (2), Engine (1), Forward collision avoidance (1), Steering (1), Tires (1).
Example complaints
Fuel system: “I smell gas inside my vehicle when I fill up my gas tank and it smells really strong in the car , I took it to mercedes dealership and they said that there was in fact a leak I had pay for them to diagnosis it and they also said it was leaking a little inside the vehicle that they could not fix it and that I had to pay to replace the tank and fuel pump and sending unit .”
NHTSA complaint #10583429, filed 2014-04, 140,000 milesBrakes: “Brake lights keep coming on so I had the brakes replaced. Brake lights still coming on, could not stop while in traffic with break pedal to the floor. Went to the mercedes benz dealership I was told my sensotronic brake control needed to be replaced. I am now hearing that there was a recall on the sensotronic brake control. Vehicle purchase 1 year ago, has just over 99k miles. Germain mercedes advised repair cost are $2500 and there is no warranty”
NHTSA complaint #10892965, filed 2016-08, 99,000 milesSuspension: “My 2003 mb E500 sport is equipped with the airmatic suspension. Without warning the rear suspension completely failed and dropped the rear end of the vehicle all the way down to the frame 2 inches from the asphalt. My small child was in the back seat of the vehicle at the time and would have bounced up to the ceiling if he had not been secured in his carseat. The car is not operational at this time and repair estimates exceed $3,000.00.”
NHTSA complaint #10660587, filed 2014-11, 76,358 milesTransmission and drivetrain: “I have an 03 mercedes E500. At about 65000 ml I had glycol in my transmission due to radiator failure. I took it to mercedes sarasota and they said it will cost $5000 and they have to change the radiator and the transmission. I was reading the mercedes world forum and I see that lot of people had the same problem. At the and cost me $3000 at aamco. I hope mercedes will issue a recall for this problem.”
NHTSA complaint #10435280, filed 2011-11, 65,000 milesMileage when problems were reported
12% of the 101 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 67,055 and 120,000 miles.
Complaints by year filed
Trend: falling. Complaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 2003 Mercedes-Benz E500. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.
| Version | Overall | Frontal | Side | Side pole | Rollover |
|---|---|---|---|---|---|
| E-Class · sedan | not rated | 4 / 4 | — | — | — |
Ratings before the 2011 model year come from an older, less demanding test and are not comparable with ratings for 2011 and later.
Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.
Fuel economy and running cost
EPA ratings for each 2003 Mercedes-Benz E500 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| E500 RWD | 5.0L 8-cyl | 5-speed automatic | 15 | 21 | 17 | $4,850 |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
- 24V874000Nov 19, 2024Visibility › Sun/moon roof assemblyCovers: Mercedes-Benz E500 2003–2006, E320 2003–2009, C230 2002–2007 +20 more
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please see the recall report for a complete list of models and model years. The glass sunroof panel may not be properly secured and can detach.
- 22V954000Dec 23, 2022Visibility › Sun/moon roof assemblyCovers: Mercedes-Benz E500 2003–2006, C230 2002–2007, CLS550 2006–2011 +18 more
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The glass sunroof panel may not be properly secured and may detach.
- 19V918000Dec 20, 2019Visibility › Sun/moon roof assemblyCovers: Mercedes-Benz E500 2003–2006, E320 2003–2009, C320 2001–2005 +21 more
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2001-2011 vehicles. The bonding between the glass panel and the sliding roof frame may deteriorate, possibly resulting in the glass panel detaching from the vehicle. For a full list of the affected models…
Recall details for the 2003 Mercedes-Benz E500 → · Check a VIN at nhtsa.gov/recalls
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 76 on record; the latest 10 are shown.
- 11038186Sep 22, 2026Brakes. Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is…
- 11038217Sep 14, 2026Body and structure. Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even…
- 11036101Aug 6, 2026Body and structure. Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even…
- 11035005Jul 14, 2026Transmission and drivetrain. Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound…
- 11032875May 19, 2026Visibility (wipers, defrost, mirrors). Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not wiped completely…
- 11031580Apr 16, 2026Exterior lighting. Complaint Headlamp, front fog lamp leaky or fogged. Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical…
- 11029959Mar 9, 2026Exterior lighting. Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical…
- 11029062Feb 25, 2026Exterior lighting. Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging…
- 11028989Feb 24, 2026Exterior lighting. Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging…
- 11027566Jan 7, 2026Visibility (wipers, defrost, mirrors). Complaint Customer states the AC either does not cool/has poor performance or heat is insufficient. Cause Many possible root causes Remedy AC Diagnosis (General) Initial Steps Verify Customer…
Other model years of the Mercedes-Benz E500
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2006 | 50 | 79,000 | 4 | — | 18 | Not compared (before 2008) | Falling |
| 2005 | 140 | 99,250 | 3 | — | 18 | Not compared (before 2008) | Falling |
| 2004 | 142 | 90,800 | 3 | — | 17 | Not compared (before 2008) | Falling |
| 2003 | 125 | 90,600 | 3 | — | 17 | Not compared (before 2008) | Falling |
All Mercedes-Benz E500 model years · Best and worst years by complaints
Frequently asked questions
What are the most common problems with the 2003 Mercedes-Benz E500?
Owners of this model year most often describe two patterns: the Sensotronic Brake Control (SBC) system losing power assist and illuminating red brake warnings, and fuel leaks or strong fuel odors traced to the fuel tank and sending unit. The issues reported most often: Brake pedal to the floor / SBC warning; Fuel smell and leaks at tank / sending unit; Airmatic suspension drops / 'car too low'.
How many NHTSA complaints does the 2003 Mercedes-Benz E500 have?
NHTSA recorded 125 consumer complaints for the 2003 Mercedes-Benz E500 as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2003 Mercedes-Benz E500 is reported most often?
Fuel system is named most often, in 41 complaints (33% of the total), followed by brakes with 38.
Has the 2003 Mercedes-Benz E500 been recalled?
NHTSA lists 3 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 2003 Mercedes-Benz E500 get?
The EPA rates the 2003 Mercedes-Benz E500 (E500, 5.0L 8-cyl) at 17 mpg combined, 15 city and 21 highway, with an estimated annual fuel cost of $4,850 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 2003 Mercedes-Benz E500 reported?
Among the 101 complaints that include a mileage, the median is 90,600 miles and the middle half falls between 67,055 and 120,000 miles; 12% were filed for vehicles with under 50,000 miles.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.