10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
114,667 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

Get notified about new defects, investigations, recalls & lawsuits for the 2004 Hyundai Sonata:

Unsubscribe any time. We don't sell/share your email.

problem #3

Jan 032018

Sonata

  • 130,000 miles
Fuel system cannot fuel vehicle properly due to poor vent recovery equipment.... none of it is replaceable as replacement parts are nolonger available...

- Vandergrift, PA, USA

problem #2

Oct 012014

Sonata 6-cyl

  • 129,000 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.

- Mt Vernon, , WA, USA

problem #1

Mar 052013

Sonata

  • 85,000 miles
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. Final result, serious damage to both the car and the garage. Fortunately this did not occur in traffic or with pedestrians in the area. On-line research has since shown me that there have been numerous other similar incidents where Hyundai Sonatas have suddenly accelerated on their own. See

- Battle Creek, MI, USA