Engine failure, after driving short distances engine does not always want to restart; during times of sitting in traffic, car will idle roughly and sputter, sometimes die and won't immediately restart; car has died while attempting to start out into traffic; transmission doesn't change gears properly... I have had my car since Feb. 04 and it has been serviced over a dozen times for engine failure and transmission issues alone. It has had a new transmission, linkage, gear box, starter, battery, and they are currently putting in the 2nd replacement engine. No one seems to know why these cars have so much trouble, but I wouldn't have another one if it was given to me.

- Knoxville, SD, USA

3 months after purchase of 2004 Rx-8 battery and spark plugs needed to be replaced. One several occasions the vehicle would not start. The vehicle's battery was replaced twice and had to be charged three times. The spark plugs were replaced three times. The computer was reprogrammed. The engine was replaced to alleviate stalling. The catalytic converter, 02 sensor, amplifier and starter were also replaced.

- Sparta, NJ, USA

2004 Mazda rx 8 has many design defects, battery was replaced, spark plugs and oil filter was replaced 3 months after purchase. The started was replaced. The vehicle was stalling in traffic and was taking multiple times to try to restart the vehicle. After numerous times of the vehicle being towed, the dealership decided to replace the entire engine. After the replacement of the engine, the engine light illuminated and the vehicle was still not starting smoothly. The dash lights were blinking on and off and the heat was not working. The catalytic converter, 02 sensor, and A/C amplifier. The heater control switch was replaced. The sun visor was replaced.

- Sparta, NJ, USA

Mazda rx 8 failed to start. Second time sent to dealer for the same problem. Dealer has had car for 5 days waiting for a batter for my car.

- Ocala, FL, USA

I purchased the car in March 2004. During the time span of July 2004-October 2005 the car has been in the service dept. For failure to start and engine failure during driving the car. October 5, 2005 the dealership told me to pick up the car that it was fixed. I went and picked up the car and started home in the car the car quit running on the interstate at 70 miles per hour and myself and two children were almost hit by two big trucks.

- Monteagle, TN, USA

Mazda 2004 Rx-8 flooded and failed to start twice, each time it had been repaired with new plugs and update PCM.

- Florence, SC, USA

Mazda Rx-8 with less than 3000 miles has twice shut off and failed to start. Major problem with fuel delivery and/or spark ignition system.

- Ridgeville, SC, USA