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Fuel systemPart report

2004 Hyundai Sonata Fuel system Problems

Complaints
8about this part
Share
4%of 202 total for the year
Median mileage
85,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the fuel system of the 2004 Hyundai Sonata, 4% of the 202 complaints for this model year. Where a mileage was given, the median is 85,000 miles. 1 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Backing into the garage, my foot on brake, the engine suddenly revved to high RPM, the car shot backwards, propelling a heavy rubber mat on which the car is normally parked out of the garage and into the driveway. The vehicle then impacted and crashed through the rear garage wall before coming to a stop. I managed to pry the gear lever out of reverse, hit drive instead and sent the car, wheels still spinning and laying down rubber, forward out of the garage. On its way out the car swiped along the right side the garage door post before finally coming to a stop in the driveway. …”

NHTSA complaint #10504759, filed 2013-03, 85,000 miles

“I have a 2004 Hyundai Sonata v6 that gives me problems when I fill the gas tank up. I know that this might sound crazy but, when I go to start the car, it will not turn over. I recently had a major tune-up done on the vehicle along with changing the timing belt. When I fill up my car, I have to include an additive such as gas treatment, lucas gas treatment, fuel cleaner, etc. I had my mechanic look at the vehicle four times and he has found nothing wrong with the vehicle. I ask for assistance to diagnose the problem and would you recommend bringing the car to a dealer. Please help! Thank you. …”

NHTSA complaint #10274855, filed 2009-06, 76,177 miles

“Split fuel tank on the side, 2nd fuel tank to fail in the last 5 years. Hyundai claims there is no problems with fuel tanks, but google the Sonata fuel tanks and there is a ton of complaints. Hyundai will do nothing about it. No recall, no nothing. House and garage has severe gas smell and a large puddle of gas on the floor.”

NHTSA complaint #10643153, filed 2014-10, 129,000 miles

“After filling the gas tank full, found fuel leaking from the tank onto the ground. Removed the tank from the car and found 13 rust holes on the top and side of the fuel tank. Holes were found beneath areas of sealant that had separated from the tank surface.”

NHTSA complaint #10543776, filed 2013-09, 110,350 miles

“Fuel system cannot fuel vehicle properly due to poor vent recovery equipment.... None of it is replaceable as replacement parts are nolonger available...”

NHTSA complaint #11074643, filed 2018-02, 130,000 miles

Fuel system: other model years

YearComplaintsShare of year
2025212%
202412%
20234450%
20222931%
20213425%
20205932%
2019127%
2018349%
2017334%
2016345%
2015867%
20148912%
201321111%
20121147%
20111334%
2010123%
2009235%
200861%
200791%
2006222%
200553%
200484%
2003189%
2002258%
200163%
200041%
199922%
19981020%
19971735%
199523%
199016%

Other parts of the 2004 Hyundai Sonata

Suspension
56 complaints
Body and structure
47 complaints
Air bags
46 complaints
Electrical system
17 complaints
Brakes
16 complaints
Steering
13 complaints
Wheels
13 complaints
Latches, locks and linkages
12 complaints
Other or unknown
12 complaints
Transmission and drivetrain
10 complaints
Engine
5 complaints
Engine cooling
5 complaints

← All problems reported for the 2004 Hyundai Sonata

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.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology