Engine problems of the 2004 Mazda RX8

14 problems related to engine have been reported for the 2004 Mazda RX8. The most recently reported issues are listed below.

car   Engine problem 1
Failure Date: 10/11/2010

The contact owns a 2004 Mazda Rx8. The contact stated that the vehicle engine was exhibiting a decrease in power and was sporadically slow to start. The dealer advised the contact that the engine had low compression and would need a motor replacement. The vehicle was not repaired and the contact stated that the dealer denied the repair under an extended warranty. The manufacturer advised the contact that they would consult with the dealer and contact him at a later date. The manufacturer offered no further assistance. The failure mileage was 99,130.

car   Engine problem 2
Failure Date: 04/29/2009

I was driving my 2004 Mazda RX-8 on the highway at approximately 60mph and went to shift from 5th gear into 4th gear when I felt a "pop" at which point my clutch fell to the floor and I no longer had any ability to accelerate. Fortunately traffic was light and I was able to coast off onto the next exit ramp and pulled to the side of the road. I called Mazda roadside assistance who towed the car to Mazda bedford. I was told that the clutch was "blown" and needed to be completely replaced. The Mazda forum is full of similar episodes and I was encouraged to file a complaint.

car   Engine problem 3
Failure Date: 10/14/2008

The contact owns a 2004 Mazda RX-8. When the contact attempted to stop the engine, the motor would kick, but the engine would not stop. A mechanic stated that the fuel pump was faulty and made the replacement. The repair only lasted one week. He took the vehicle to a Mazda dealer and they stated that there was a flooding issue. The dealer repaired the vehicle for free, but the failure recurred a month later. The mechanic stated that the outer grip on the fly wheel was loose. The mechanic repaired the vehicle, but the engine still would not start. The failure mileage was 40,000 and current mileage was 42,000.

car   Engine problem 4
Failure Date: 08/12/2008

Driving home when making a left turn the vehicle stopped dead in the oncoming lane. This has happened at least 3 times before with no indication from the dealer as to the cause or solution to this problem. According to reports on the internet many complaints have indicated that around 28,000 miles the engine was replace due to lack of compression.

car   Engine problem 5
Failure Date: 12/27/2007

I have a 2004 Mazda RX-8. Three times within the last six months (since December 2007) I have had to have the car towed to the dealer because although the car would start, it would not "catch" and fire up. The dealer says that it is a problem particular to the 2004 RX-8 (no other year of this model has this problem). They said the engine gets flooded if the car isn't run "hot" for at least 1/2 hour (like it can happen if I just run to the grocery store and back). They said this is a recurring problem with the 2004 RX-8. If this is a huge problem, why hasn't there been a recall to repair it? it costs me over $150 each time it has to go in, not to mention lost hours at work because my car won't start.

car   Engine problem 6
Failure Date: 10/25/2007

I bought my 2004 RX-8 used with 48,000 miles on it. One month after purchasing the engine started to run rough, especially noticeable while at a stop light or sitting at an idle. Was told I had a compression variance in the engine and that it would have to be replaced. Undisclosed to me at the time of purchase was the fact that this car had already had the engine replace previously. I now have a car that is on its 3rd engine in 52,000 miles.

car   Engine problem 7
Failure Date: 07/01/2007

The contact owns a 2004 Mazda Rx8. The vehicle would not start and the dealer stated that the failure was due to the rotary engine. The dealer stated that there was no remedy, but advised the contact to press the accelerator pedal before starting and shutting off the engine. The number of cylinders were unknown. The failure mileage was 48,000 and current mileage was 51,200.

car   Engine problem 8
Failure Date: 05/01/2007

The contact owns a 2004 Mazda RX-8. The contact stated that he took his vehicle in for a recall repair. The dealer and the manufacturer refused to repair his vehicle because he did not have a recall notice present. The contact stated that he never received a recall notice. Since that time, his vehicle has experienced a loss of power, excessive air consumption, and poor mileage. The # of cylinders is 0 because the vehicle has a rotary engine. The current mileage is 71,000 and failure mileage was 65,000.

car   Engine problem 9
Failure Date: 11/09/2006

Purchased a 2004 Mazda Rx8 during may 2004. Aug. 2004 the car was in for a recall on hard start/ lack of power issues. Since then the car has been out of service for 24 days and has required 8 trips to the service dept. For engine related problems. Subsequently, the pcm was shipped to Mazda USA for a reprogram. This solution did not work and the engine had to be replaced. The symptoms include power loss, hesitation, rough idle, and cel light problems. Initially, I was told this was a high speed lean out condition. Actually, this vehicle had a defective engine from the day it was purchased. This is confirmed by the fact Mazda has extended the warranty on all Rx8 rotary engines and there is a recall on all rotary engines for testing to see if the engine needs replacement. Unfortunately, this fix may or may not work. Other owners have had multiple engine replacements. My car has started to exhibit the same symptoms that led to the first replacement. Also, the engines are remanufactured further reducing the resale value of the car. The treatment from the dealer and Mazda USA customer mediation is actually "customer no service" and a disgrace. In a press release Rx8 owners were guaranteed "white glove treatment". It appears that the only remedy seems to an attorney and/or the lemon law.

car   Engine problem 10
Failure Date: 07/18/2006

I own a 2004 Mazda RX-8 and have had several random break-downs & the car would not restart. Half the time, my car is just parked and will not start up even after sitting for awhile. Mazda has replaced the entire engine, battery, and coils. I was without my car for 22 days. I researched this issue and found 11 other Mazda RX-8 owners with the exact problems. Seems to be a defect in the rotary engine. I wrote Mazda consumer compliance and gave all documentation related to my car and they offered an extended warranty and guaranteed my car was fully repaired. They sent me a contract for extended warranty and basically signing the warranty excludes me to ever seek any monetary or justification from Mazda again on this vehicle. I did not sign the contract. I picked up my car and 6 days later my car would not start (same as before). I towed it back to the dealer, within 2 days they called me and told me that my undercarriage was completely torn apart and I must of ran over something very recently and it wouldn't be covered under warranty. They are now charging me $250 for a replacement oxygen sensor. I can care less about the $250, it's just obvious they will not admit that their engine is defective by design. I am sure my VIN # is flagged at the dealership because of the letter I wrote to the manufacturer, which is unfortunate because the letter was just an opportunity for them before I seek legal council. I guess now they are implying that I am purposely harming my vehicle, which is absurd. I heard that there was a new recall for the Mazda RX-8 coming out soon but they are waiting for NHTSA to approve it. I am hoping it's for Mazda to buy back the vehicles, especially when they had such a recall for this same vehicle in the past due to false advertising of the horse power of this vehicle. It's unsafe to have your car randomly die on you. I just hope something gets accomplished before someone does get hurt while stranded on the side of the road.

car   Engine problem 11
Failure Date: 01/06/2006

: the contact stated while driving in normal conditions and no particular speed, the engine vibrates. The vehicle was taken to the local dealership for inspection. The dealer discovered two motor mounts were broken. The repair parts are on back order and no repairs were made.

car   Engine problem 12
Failure Date: 11/03/2005

I purchased a 2004 Mazda RX-8 in may 2004. In Nov 2005, the first cold day, the engine flooded. The same weekend I received a letter from Mazda warning me of the problem and to bring it in for a recall. I was advised to let the car warm up before during it off. I made up a warning sign for the attendants at the parking lot, since then the car has flooded two times at the worst possible times; airport parking lot after long long flights. I am pretty upset about Mazda's attitude towards this problem. A letter to Mazda resulted in them sending me instructions on how to "DE-choke" the engine which can and has killed the battery and has never worked. This is my first experience with Mazda and my last. I am the owner of the car and I am embarrassed about the whole thing. I just can't imagine how Mazda can leave their customers literally, "out in the cold".

car   Engine problem 13
Failure Date: 12/29/2004

2004 Mazda RX-8 failed to start twice due to the engine flooding.

car   Engine problem 14
Failure Date: 02/21/2004

I bought my car around the first week of November 2003. In the first month I took the car back to the dealership three times for repair. The problem was with the engine. Apparently one of the rotors was not firing causing a raw fuel smell to enter the car through the ventilation. With only 2000 miles, the engine was replaced after the third visit. Two months have passed and after three days of no driving, the car will no longer start.

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