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.


really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
2 / 0
Average Mileage:
18,715 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.

2014 Kia Cadenza engine problems

engine problem

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2014 Kia Cadenza Owner Comments

problem #4

May 182016


  • 45,860 miles


The contact owns a 2014 Kia Cadenza. While driving 20 mph downhill, the brake pedal failed to stop the vehicle. The vehicle continued to roll until it reached a flat surface. The vehicle was taken to the dealer where it was diagnosed that the battery failed. The battery was replaced. In addition, while driving 10 mph, the vehicle stalled in the middle of an intersection. The check engine light illuminated. The contact was able to restart the vehicle, but the failure recurred. The manufacturer was notified of the failure. The approximate failure mileage was 45,860.

- Los Angeles, CA, USA

problem #3

Jul 072015


  • 24,000 miles
Engine was making a noise and fowl odor from vents took to Kia dealer after a wk they didn't know the problem said it was safe to drive back to las vegas from calif once we arrived we called local dealer they replaced engine so they said. Then 2 wks later we get it back I began having site throat cough and severe headaches and later told my husband I thought it was gas I was smelling in the car we took it to the dealer they looked at it and said it was fine so we leave to calif and the following day I went to start the car and we heard a loud noise and gas had gone every where the fire dept had to come assist and give clearance to tow the car due to the fuel hazard.

- Henderson, NV, USA

problem #2

Mar 032014

Cadenza 6-cyl

  • 5,000 miles
When accelerating from a stop, if done in a start, stop, restart fashion, it does not immediately re-accelerate. This condition can occur when stopping prior to pulling out into traffic.

- Malvern, PA, USA

problem #1

Nov 222014

Cadenza 6-cyl

  • miles
On Saturday - November 22, 2014 around 6:30 pm the car engine stopped and car rolled for few feet and stopped in the middle of the street. Also steering jammed and didn't move. It was stopped and didn't start back on and steering became very hard to crank it. The battery was running fine. Due to electrical and/or mechanical failure we were exposed to the unsafe environment. Fortunately, we were not on the busy street/freeway otherwise it could have been ended up in major safety incident. When this happened, we couldn't maneuver the steering resulting in situation totally out of control.

- Eastvale, CA, USA

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