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hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
90,000 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 XG350 fuel system problems

fuel system problem

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2003 Hyundai XG350 Owner Comments

problem #1

Jun 052013

XG350 6-cyl

  • 90,000 miles


My vehicle has been having a hesitation problem for some time now. I have taken it to several mechanics and have not found the problem after spending several thousand dollars. I took it to the local dealer (brown Hyundai) in Laredo tx and they point to the catalytic converters (3) and the oxygen sensors. I have had a mechanic remove the catalytic converts and tell me there is nothing wrong with the converters. The vehicle exhaust system reaches over 500 degrees. I have measured it with a heat gun. While I do not know what the proper temperature should be I know over 500 degrees is way to high. While I went to pick up my Hyundai at the dealer he told me they had just had 2 other vehicles XG350's with the exact problem. If you go on line and read some of the codes they refer too "band 1 and bank 2 system too lean", this is a very common problem without an exact solution. I believe the code is P0174 and P0171. Both the mechanics I have hired and the dealer have checked the list of possible problems which include: Intake air leaks oxygen sensors ignition misfiring fuel injectors fuel pressure mass air flow sensor.

- Laredo, TX, USA

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