When I start my car, the RPM accelerates high as it will go. Very annoying and loud. It does this most of the time some times when I come to a stop light and proceed forward, the car jerks forward as I accelerate.

- Columbus, OH, USA

Kia Amanti losing power while driving or losing power then accelerating out of control and Kia seems not to be able to fix the problem.

- Macomb, MI, USA

My check engine light comes on and my car loses power fast no matter what speed I am going. I put my foot on the gas and the RPM's go up and I am only able to drive at a speed of 20mph. At times my car will drive at a normal speed and the check engine light will be on.its very strange. I've taken it to the dealer and they said that it needed a new catalytic converter. It was replaced under warranty. One week later the same symptoms and another out of pocket expense of over $1,000 and another part. The problem still exists months later. Each time with a different diagnosis by the dealer. My mechanic diagnosed the problem when it first happened with his meter and it read electronic throttle body. I told this to the dealer months ago and thousands of dollars ago.

- Dallas, PA, USA

The vehicle surges while accelerating. The problem occurs sporadically but has done it consistently for over 5 years. Every time I take it to the dealer they can't find anything wrong and nothing is done. This vehicle has an electronic throttle.

- Elmore, AL, USA

2004 Kia Amanti with transmission problem. Consumer states that the vehicle began to buck and jump and dropped down to 15 mph. He also states that the vehicle continued to shake. The consumer stated the check engine light illuminated and the cruise control was lost.

- Middletown, DE, USA