Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Crashes / Fires:
2 / 1
Injuries / Deaths:
1 / 0
Average Mileage:
67,676 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.

2005 Hyundai Sonata engine problems

engine problem

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2005 Hyundai Sonata Owner Comments

problem #6

Feb 282015

Sonata 6-cyl

  • miles


I was driving in my own lane with my seatbelt on and lights on and I didn't see this bus coming speeding with no lights on at all he scratched my passenger side door and he all most took the mirror off I hit the brake and it slowed to 55 and I still hit him I was going speed limit the radiator broke and the car all most exploded also the airbags didn't go off and the speed mph was about 5 off the steering pump also failed. I all most died.

- Boca Raton, FL, USA

problem #5

Jul 182014

Sonata 7-cyl

  • 142,000 miles
While driving on the freeway the car started accelerating on its own. Tried pumping the gas pedal to release it, car still accelerated. Brakes did little good. Was able to down shift into first gear, then into neutral and utilizing the emergency brake was able to get the car slowed down enough to cut the engine. Some problem happened immediately when I turned the car back on trying to get it off the freeway off ramp. Was able to stop safely in a parking lot without hitting anything. Had the car towed to the dealership, where they said it was a problem with the throttle.

- Albuquerque, NM, USA

problem #4

Jan 092013


  • 184,000 miles
The contact owns a 2005 Hyundai Sonata. The contact stated that when shifting into park while driving at any speed, the engine rpms would increase abnormally as the vehicle would independently accelerate. The failure recurred intermittently. The contact shifted into neutral to coast to the shoulder. The engine was shut off and when restarted, the vehicle returned to normal function. The vehicle was taken to a mechanic, who performed a diagnostic but was unable to locate a failure code. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure and the current mileage was 184,000.

- Mccoll, SC, USA

problem #3

Aug 242010


  • 70,000 miles


The contact owns a 2005 Hyundai Sonata. The contact stated that while driving approximately 50 mph on a 2 lane highway and she merged into the left lane when the vehicle suddenly spun out of control crashing into a concrete wall. The driver received minor injuries. A police report was filed. The vehicle was towed to a dealer who did not diagnose the failure. The failure mileage was 70,000.

- Commerce, TX, USA

problem #2

Nov 052008


  • 56 miles
When the lights are on, the cruise will not work. When the lights are on, the brake lights dont go off.

- Galena, KS, USA

problem #1

May 072005

Sonata 4-cyl

  • Automatic transmission
  • 10,000 miles
Very rough accelleration.

- Yulee, FL, USA

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