pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
3,500 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 Rio engine problems

engine problem

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2014 Kia Rio Owner Comments

problem #1

Jun 192015


  • 3,500 miles


I was driving 35 mph on a six lane commercial road (three lanes in each direction) when the vehicle suddenly decelerated to below 20 mph. The cars around me had to swerve to avoid hitting me, and I had to turn on the hazard lights to warn the surrounding vehicles. I tried pressing on the gas several times, but the speed would not go above 20 mph. However, the rpms were going above the red line (above 6,000) and the engine was revving very loud. The speed of the vehicle did not go above 20 mph for the next fifteen minutes of driving. I slowly made my way to a safe place to stop the car and pulled over. I turned off the car and waited for several minutes. I turned the car back on again and the speed control returned to normal. However, I am no longer comfortable driving the car, as the sudden deceleration may occur again. Maryland law requires that a vehicle on the highway must have a speed capability that exceeds the speed limit by 5 mph. The sudden deceleration and inability of the Kia Rio to speed up again means this vehicle has a defect that is in violation on Maryland law. The sudden deceleration of the vehicle in fast moving traffic put my life in danger, and I'm filing this report so a public record exists that this problem has occurred with a Kia Rio (4S) 2014 model.

- Silver Spring, MD, USA

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