2004 Mercedes Benz E320 Fuel/propulsion System Problems
Owners have filed 79 complaints with NHTSA about fuel/propulsion system problems on the 2004 Mercedes Benz E320, 39% of all complaints for this model year. Half of the reports with a mileage happened before 96,500 miles. The words owners use most often: “fuel tank” (27% of reports).
- 79fuel/propulsion system complaints
- 96,500median miles at failure
- 0mention a crash
- 0mention an injury
- 0related recalls
- $3,250typical repair cost reported by owners
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Fuel tank: mentioned in 21 of 79 complaints (27%)
- Sending unit: mentioned in 13 of 79 complaints (16%)
- Strong gasoline: mentioned in 10 of 79 complaints (13%)
- Gas smell: mentioned in 8 of 79 complaints (10%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical fuel/propulsion system repair on the 2004 Mercedes Benz E320 at $3,250, and half of them between $1,300 and $3,600.
Based on 8 NHTSA complaints about this problem alone that state a repair bill or quote (2012–2019), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do fuel/propulsion system problems happen?
Based on 72 complaints that reported the odometer reading.
How serious are the reports?
None of the 79 complaints report a crash, fire or injury.
Mercedes Benz E320 fuel/propulsion system complaints by model year
| Model year | Fuel/propulsion System complaints | Share of that year | Median miles |
|---|---|---|---|
| 2009 E320 | 2 | 25% | 53,300 |
| 2008 E320 | 1 | 10% | 115,000 |
| 2007 E320 | 4 | 24% | 21,458 |
| 2006 E320 | 4 | 10% | 115,000 |
| 2005 E320 | 81 | 35% | 98,000 |
| 2004 E320 | 79 | 39% | 96,500 |
| 2003 E320 | 71 | 33% | 104,000 |
| 2000 E320 | 3 | 7% | 217,193 |
| 1999 E320 | 3 | 4% | 118,000 |
| 1998 E320 | 1 | 3% | 149,000 |
| 1996 E320 | 2 | 4% | 127,000 |
| 1995 E320 | 2 | 2% | 127,832 |
When owners reported it
Related recalls (0)
No safety recall lists fuel/propulsion system for the 2004 Mercedes Benz E320. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
Extreme Gas Odor after filling gas tank and during time of driving.
Driver is experiencing a heavy odor of gasoline after fill up. Vehicle is not overfilled/topped off. Vehicle was sitting inside garage when owner noticed a heavy fuel odor and notified fire department to investigate. Per recommendations of fire department, keep vehicle out of garage until issue…
I filled the gas tank full and on pulling in the garage could smell a strong smell of gasoline... Went to get my oil change the next day and the gentleman mentioned he could smell gas coming from my car at valvoline oil change.... Very strong smell in the interior of the car as well as when walking…

Frequently asked questions
Do all 2004 Mercedes Benz E320s have fuel/propulsion system problems?
No. NHTSA has 79 owner complaints about fuel/propulsion system for the 2004 Mercedes Benz E320 (39% of the 203 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2004 Mercedes Benz E320 fuel/propulsion system?
No recall currently lists fuel/propulsion system for this vehicle.
At what mileage do fuel/propulsion system problems start?
The median reported mileage is 96,500 miles: half of the reports with a mileage came before that.
How much does it cost to fix fuel/propulsion system problems on the 2004 Mercedes Benz E320?
Owners report a typical cost of $3,250 (half paid between $1,300 and $3,600), from 8 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about fuel/propulsion system problems on the 2004 Mercedes Benz E320?
The most frequent phrase is “fuel tank”, in 21 of 79 complaints, followed by “sending unit” (13).
See all 2004 Mercedes Benz E320 problems or fuel/propulsion system problems across all E320 years.