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:
40,632 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 Kia Rio transmission problems

transmission problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2004 Kia Rio:

Unsubscribe any time. We don't sell/share your email.

2004 Kia Rio Owner Comments

problem #2

Jun 172009


  • 30,000 miles


The contact owns a 2004 Kia Rio. When the contact approached a stop light, the vehicle began accelerating and a noise was present in the front of the vehicle. The transmission was replaced on three occasions within the last 1000 miles. The dealer informed the contact that the transmission needed to be replaced. The current mileage was 55700 and the failure mileage was 30000.

- San Antonio, TX, USA

problem #1

Nov 022006

Rio 4-cyl

  • Automatic transmission
  • 51,264 miles
: the contact stated while traveling at speeds below 25 mph, the transmission would not downshift, causing severe hesitation. The dealership determined the problem was in the transmission and no repair was available. 11/30/06.

- Bonifay, FL, USA

Not what you are looking for?