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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hardly worth mentioning
Crashes / Fires:
0 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
106,863 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.

2008 Hyundai Sonata drivetrain problems

drivetrain problem

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2008 Hyundai Sonata Owner Comments

problem #6

Dec 162014


  • 139,881 miles


When vehicle is started from a cold start, there is a noticeable rattle coming from engine that lasts about 3-7 seconds. Also while accelerating, the rattle is persistent with throttle input. I was told that the problem is the timing chain tensioner and that the Hyundai Sonatas have defective timing chain tensioners. I went to the Hyundai dealership and they quoted me $1,100 to fix the problem and made me aware that there was a tsb but not a recall on the part even though there is a revised tensioner. This is a ongoing issue and a hazard because the chain could have to much slack and cause the the timing to be off and future damage for the engine.

- Richmond, VA, USA

problem #5

Aug 112014

Sonata 6-cyl

  • 104,743 miles
ESC light on along with check engine....need push button and turn off engine a couple of time.

- Pasco, WA, USA

problem #4

Sep 102014


  • 149,000 miles
Engine failure -lower rod bent no cause by operator car well maintained.

- Cloud, FL, USA

problem #3

Aug 062014

Sonata 4-cyl

  • 143,056 miles


Driving while using cruise control at approximately 65 mph the check engine, air bag, and E.S.C light illuminated. Also, a simultaneous internal engine explosion resulted in an instant fire as well as a rod thrown from the vehicle damaging block and setting the car on fire from a resulting massive oil leak. There was no prior damage leading up to the incident nor any indication to my knowledge that there were any concerns with my car till it was too late unfortunately.

- Elk Grove , CA, USA

problem #2

Dec 102011

Sonata 4-cyl

  • 61,500 miles
While stopped at a busy intersection, with engine running and clutch to the floor (disengaged), the car began to lurch against the brake. The clutch began engaging by itself because the concentric slave cylinder had failed at 61,500 miles. The dealer advised the car was 1,500 miles out of warranty, total cost to repair was $1950 and 3 days of service. Because the leaking hydraulic fluid "soaked" the clutch, the $794 clutch/pressure plate needed replacement as well. Hyundai will not honor any "goodwill" adjustment.

- Amherst, NY, USA

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problem #1

Jun 162009


  • 43,000 miles
The contact owns a 2008 Hyundai Sonata. While driving for approximately three hours, the contact noticed that the trunk ajar warning light was illuminated on the instrument panel. Another motorist alerted him that the rear of his vehicle was on fire. The contact pulled over and noticed that the wires in the trunk were on fire. He was able to safely extinguish the flames and resume driving. While driving 40 mph in third gear, the vehicle unexpectedly downshifted to first gear. In addition, the engine warning light illuminated on the instrument panel. He is in the process of having the vehicle inspected to determine the cause of the failures. The failure and current mileages were 43,000.

- Bosher City, LA, USA

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