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.

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10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
2,505 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.

2003 Hyundai Sonata engine problems

engine problem

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2003 Hyundai Sonata Owner Comments

problem #7

Mar 082004

Sonata 6-cyl

  • miles

A D V E R T I S E M E N T S

The consumer's Hyundai Sonata developed the following problems: The paint was peeling, the sun roof was broken, the passenger side window was inoperative, the brakes failed, the seatbelt broke, the engine blew up and the air bags failed to deploy. The engine surged. As a result of the engine blowing, the right side disintegrated.

- Webb City, MO, USA

problem #6

May 132004

Sonata 6-cyl

  • Automatic transmission
  • 6,104 miles
Stopped at red light, when time to go, engine stalled. Attempted to restart unsucessfully. A/C was not running. Car was able to start after 30 minutes. Car was towed to dealership. Dealership was unable to dublicate problem after 15 miles.

- Montclair, CA, USA

problem #5

Apr 022003

Sonata 4-cyl

  • Automatic transmission
  • 3,000 miles
The engine does reliably accelerate when the accelerator pedal is pressed. Sometimes there is up to a 3 second delay before the engine responds to commands from the accelerator pedal. At times the engine also accelerates very sluggishly compared to other 2003 4-cylinder. Hyundai Sonatas that have been tested. Hyundai hasn't corrected this problem despite many attempts.

- Cedar Rapids, IA, USA

problem #4

Jan 092004

Sonata 6-cyl

  • Automatic transmission
  • 7,230 miles

A D V E R T I S E M E N T S

Engine misfiring

- Louisville, KY, USA

problem #3

Mar 152003

Sonata

  • miles
When vehicle is parked for over six hours, then upon starting vehicle and driving, vehicle would stall.vehicle has been taken to the dealer on three occasions, but problem is recurring.

- Coraopolis, PA, USA

problem #2

Jun 152003

Sonata

  • miles
Engine check light comes on when driving vehicle.

- West Memphis, AR, USA

problem #1

Jul 182003

Sonata 6-cyl

  • Automatic transmission
  • 1,200 miles
While traveling on the highway and without prior warning, especially when going up hills, the vehicle lost power, it happened at least 5 times. The dealer stated there was no repair and to make sure the vehicle always had a tank of gas before going up a hill.

- Henderson, NV, USA

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