really awful
Crashes / Fires:
1 / 1
Injuries / Deaths:
1 / 0
Average Mileage:
49,888 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.

2006 Hyundai Sonata fuel system problems

fuel system problem

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2006 Hyundai Sonata Owner Comments

problem #11

May 262014

Sonata 4-cyl

  • 118,000 miles


Fuel pump failed when starting the vehicle. The repair shop has reported scorch marks on the fuel pump assembly, and a melted/fused screen. He tells me that the failure/short could have caused an explosion.

- Kansas City, MO, USA

problem #10

Jul 112012

Sonata 4-cyl

  • 98,500 miles
Back when I purchased this 2006 Sonata I went back in airbag light was on the car was in less than ten minutes dealer said all set and I went in to a local garage for inspection but the car legally shouldn't pass inspection due to said airbag issue and the gentleman put it through but said airbags will not deploy due to the fuse was pulled put one in been on since and it is all over Hyundai forum same problem/2 my front suspension is rattling bad and come to find out same thing on Hyundai forum they always don't know what this noise is/3 my check engine light on code search says evap leak but need 2 say yes its not fuel cap this is a known Sonata problem fuel tank is plastic and there is a part in top that is metal rust out and causes fuel tank to crack this part alone is 1500 plus labor these cars are lemons will not buy another one this is all in 2 yrs of owning not counting there was a recall I just had done but never got notice on any prior to his I want to see all that were supposedly done thanks very dis satisfied customer.

- Coventry, RI, USA

problem #9

Mar 262012

Sonata 6-cyl

  • 36,000 miles
2006 Hyundai Sonata. Vehicle was parked overnight. The vehicle would not start in the morning and was towed to a repair facility. An independent mechanic examined the vehicle and stated that the fuel pump had no pressure, that the housing was melted/burned and had a faulty/worn connection. As such, the pump was inoperable causing the failure. Hyundai of huntington, NY stated backorder of fuel pumps with no eta from the manufacturer and housing was also unavailable. The dealership offered no assistance as "not covered by powertrain warranty." Independent mechanic having difficulty finding suitable replacement/new part(s). The failure mileage was approximately 36,000.

- Melville, NY, USA

problem #8

Jan 182012

Sonata 6-cyl

  • 100,000 miles


My car is a 2006 Hyundai Sonata and last night my cars' headlights dim or shut off momentarily, the fan speed seems to drop for a second also but never shuts completely off. I noticed last night my tachometer would only go to a 1 at the lowest. It would go higher as I drove but never back down towards a 0 or 1. you could feel the harsh vibration as I sat at a stoplight while it rested at 1. I also noticed that it feels like the trans is slipping or something as I take off or try to turn. This is the first time I have ever experienced this with this car. This is extremely dangerous!! what if the gas pedal sticks or the lights go out while driving"?" I have 2 small children and you bet I would sue or my family would on my behalf if anything happened to us as a result of Hyundai not issuing some kind of recall. Please address this issue asap as to avoid any future problems that could have been corrected by a simple recall.

- Manhattan, IL, USA

problem #7

Sep 012011


  • 67,000 miles
The contact owns a 2006 Hyundai Sonata. The contact was driving approximately 10 mph when the vehicle stalled. The vehicle would not restart and was towed home. An independent mechanic examined the vehicle and stated that the fuel pump was burned, causing the failure. The vehicle was not repaired. The manufacturer was made aware of the failure and offered no assistance. The failure mileage was 67,000.

- Englewood, CO, USA

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problem #6

Dec 182009

Sonata 6-cyl

  • 48,000 miles
Smelled a strong fuel smell inside the car; especially when cold starting; this is 3.3L V6 engine. Took the car to the dealer and they could not find any problem. This was on and before 22 Sep 2009 with about 48,000 miles on the vehicle. Gas smell getting stronger and personal mechanic found right front fuel injector leaking, especially when cold. Also mileage has dropped about 10 mpg during long road trip. Mechanic recommends change of fuel injector O-ring seal(s) on the leaking injector and all others (5 more). I took the vehicle to the dealer for a warranty repair. Still waiting to see if they will repair the vehicle properly. This could be a serious safety/fire issue with raw fuel being sprayed on the hot engine.

- Bel Air, MD, USA

problem #5

Oct 202009


  • 12,980 miles


Driver of 2006 Hyundai Sonata, making uphill turn into a flat parking space experiences engine power surge that propels vehicle over sign standard, flattening sign and requiring tow truck to extricate vehicle. Photos available. This is a known defect as research has shown syndicated reporter james R. healey of usatoday noted same dangerous power surge in test vehicle in July of 2005. Owner of incident vehicle had same complaint and asked dealer to check defect on prior occasion. Dealer service reported no problems. In this incident vehicle was towed to dealer for safety and damage assessment, again dealer service reports no problem or recall.

- Allison Park, PA, USA

problem #4

Aug 062009


  • 68,263 miles
This issue involves the combustion of a plastic fuel pump power supply connector inside the fuel tank of a 2006 Hyundai Sonata. A pin on the outer connector was also burnt. The pump actually still works - it only quit because the connectors burnt - including the connector inside the tank to the point that an electrical connection could not be made. If the fuel pump motor wore out after several thousand miles (usually well over 100K in most cars - not 68K) then I may understand an argument for the Hyundai service manager's contention that this is "normal wear". I believe that a connector burning inside a fuel tank is not "normal wear" and is also likely to be a safety hazard. Hyundai motors and the dealership have both been notified of my concerns and they show no indication of doing anything to correct it other than to replace the pump at my expense - undoubtedly with one of the same design. I took the old pump from their shop and I am keeping it for future evidence. The incident occurred when trying to re-start the vehicle after it had been parked. I don't plan on keeping the vehicle for another 68K miles because I'm concerned that we may need an undertaker instead of a tow truck the next time.

- Newark, DE, USA

problem #3

Nov 252006

Sonata 6-cyl

  • Automatic transmission
  • 1 miles
This complaint applies to a 2007 Hyundai Sonata limited (no option for 2007 was available in drop down menu) (issue 1) at or around the initial few days after taking delivery I began to notice abrupt vibration and shaking coming from the steering wheel; substantial enough to feel in the seat. Vehicle was taken back to dealership on 3 separate occasions to remedy the problem but they reported that they were unable to duplicate the problem and reported the vehicle to be in manufacturer specification. Nonetheless, dealer attempted wheel balance and radial force balance as a "good will gesture." Problem is now more articulated and the issue remains unresolved. (issue 2) engine emits a rattle noise similar to lifter clatter upon start and continues throughout operation; particularly in colder weather. Timing chain tensioner was replaced and one noise was resolved but the continual nature of the lifter clatter remains. Dealership and Hyundai representative reported that they were unable to duplicate the problem and the issue remains unresolved. (issue 3) fuel sloshing coming from the fuel tank. Manufacturer and dealer claims this to be normal and not a safety risk. Sound is more pronounced at or around 3/4 tank. Brought this to the attention of the dealer and the manufacturer directly and remains unresolved.

- North Brunswick, NJ, USA

problem #2

Oct 162006

Sonata 4-cyl

  • Automatic transmission
  • 10 miles
I purchased a new 2006 Hyundai Sonata in June 2006. Immediately after purchasing the car I noticed upon filling up the tank with gas I could hear a lot of noise coming from the rear of the car. It is a loud sloshing of the gas that can be heard inside the car. It splashes back and forth upon stopping and accelerating and is loud enough to be heard over the radio. It also creates such a noise that makes it seem like there is something wrong with the brakes on the left side. It sounds at times as if I am dragging something when stopping. I have contacted the dealer a couple of times inquiring about this and have gotten no help. On October 16, 2006 I brought the car in to Hyundai to have this problem inspected, and they told me that I had super sensitive hearing and that it is a and I quote "a characteristic of the vehicle" and there was nothing that they were going to do about it. I feel that I purchased a new car and I should not hear a peep out of it. This greatly concerns me because I can tell you something is not right with the car and I am not sure how to go about this when I am getting nowhere with Hyundai myself. I am also concerned safety wise due to the fact that it is dealing with fuel. Although the noise stops when the tank falls below 1/2 I should not be afraid to fill my gas tank up for fear of what could go wrong. I hope you can help me. Thank you.

- Selden, NY, USA

problem #1

Jan 142006

Sonata 6-cyl

  • Automatic transmission
  • 10 miles
1. rear passenger side repeat rattling thumping noise in suspension at speeds below 40 mph causing disturbance and agitation to cabin driver or passengers 2. rear passenger side droning-humming echo noise more noticeable over 40 mph and at steady maintained speed causing disturbance and agitation to cabin driver or passengers 3. sloshing noise of gasoline in gas tank after the gas tank is filled and a grinding noise when the brakes are depressed in and around the gas tank area after the gas tank is filled causing disturbance and agitation to cabin driver or passengers.

- Philadelphia, PA, USA

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