really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
8,200 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.

2004 Hyundai XG350 engine problems

engine problem

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2004 Hyundai XG350 Owner Comments

problem #3

May 272006

XG350 6-cyl

  • Automatic transmission
  • miles


I bought the 2004 Hyundai XG350 in February 05. In summer of 06 I began having problems with the digital reading of miles togo before "E". it does not reset when gas has been put in, it takes a few turns of the key to register. I was driving my son to school one morning and as I tried to accelerate to go up a hill the car began to studder, check engine light appeared, it felt like something wasnt catching in order for the vehicle to move. When I stopped a the red light and slowly took my foot off the brake it would lunge forward. I ended up having to have it towed to the dealer. Of course the problem didnt happen when they test drove. They changed the sensor and it hasnt been symptom free. Still slow to reset gas mileage, still studders, check engine light. When it starts to studder I am able to drive under 60mph, shifting drive 1-2-3 like a stick shift. Once I try to go over 60 miles per hour (highway) can not do it without continuous studder.

- Methuen, MA, USA

problem #2

Feb 222006

XG350 6-cyl

  • Automatic transmission
  • 8,600 miles
: the contact stated the brake and accelerator pedal were close enough to each other to depress simultaneously. The dealership stated there was no problem with the vehicle; therefore, no repairs were made.

- Cornelius, NC, USA

problem #1

Dec 102005

XG350 6-cyl

  • Automatic transmission
  • 16,000 miles
The contact was traveling on a very busy street at a low speed. He was directly behind a delivery truck. He was constantly braking and then moving slowly, the contact's foot was never on the accelerator pedal. The engine suddenly accelerated without warning and the contact hit the back of the truck at about 3 mph. The brakes were applied, but the vehicle failed to stop before hitting the truck. The front of the vehicle sustained heavy cosmetic damage and the hood was damaged as well. No police report was taken at the scene. There were no injuries sustained. The vehicle was seen by the service dealer for diagnostic testing, and the results were negative. Therefore, no repairs were made. The primary concern of the contact was that he saw a similar complaint filed by another vehicle owner online.

- New York, NY, USA

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