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.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
45,610 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.

2006 Kia Optima transmission problems

transmission problem

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2006 Kia Optima Owner Comments

problem #2

Mar 112011

Optima 6-cyl

  • 69,000 miles


My Kia Optima 2006 has had several problems: Bad oxygen sensor, an electrical short, and most recently- will not shift out of first gear. Kia says my VIN is not included in the current recall. I took the car to a Kia dealer a few weeks before the gears quit shifting, but they couldn't find a problem. I have replaced six headlights and three tail lights. This car is a lemon! please ask Kia to extend their current recall as, obviously more cars are affected than they are reporting. Please investigate!

- Wisconsin Rapids, WI, USA

problem #1

Apr 012008

Optima 4-cyl

  • Automatic transmission
  • 22,220 miles
The contact owns a 2006 Kia Optima. When driving at any speed, the transmission would not downshift. The failure occurs everyday, but worsens in inclement weather. He took the vehicle to the dealer seven or eight times and was informed that the vehicle was designed in that fashion and nothing could be done. The current mileage was 36,000 and failure mileage was 22,220.

- Taylor, MI, USA

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