Problems · by component

2004 Mazda RX-8 engine problems

33 owner complaints to NHTSA about the 2004 Mazda RX-8 cite engine, 6% of all 515 complaints for this model year.

Complaints
33
6% of all complaints
Crashes
0
Reported by owners
Fires
2
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the engine

Verbatim from NHTSA complaints, newest first
“The contact owns a 2004 Mazda RX-8. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the engine. The dealer determined that the engine had no compression. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 60,000.”
Owner complaint to NHTSAFiled May 23, 2024EngineODI 11590479
“Engine naturally wears out especially after 200k miles due to friction in the natural design of the Rotary engine, resulting in losing its overall function such as turning off in the middle of a drive due to loss of compression from worn Apex Seals of the Rotary. The rotary engine requires a replacement of the Apex Seals to continue functioning normally to avoid any unpredictable accidents due to engine failure. An event occurred where my RX-8 went into limp mode in the middle of the freeway as i was commuting due a misfire from poor compression, this is more then likely a common event nowadays for RX-8 owners starting at the S1 2004 models with newer models soon to follow the same incident as me. This is completely unsafe especially traveling at 65 MPH”
Owner complaint to NHTSAFiled Mar 29, 2023EngineODI 11514483
“I SENT MY MAZDA IN TO THE DEALERSHIP TO FIX RECALLS AND MAKE A KEY. IN EXCELLENT SHAPE. ONE AREA WITH SLIGHT BODY DAMAGE. ON 3/16/2018 WAS RETURNED A CAR THAT DOESN'T RUN. WITH. CRACKED DASHBOARD, TORN SEATS, MULTIPLE DENTS, CHARGED 345 DOLLARS ON 6/10 2019. I WAS SENT A TOW BILL AS NOTIFICATION TO PICK IT UP.”
Owner complaint to NHTSAFiled Jul 19, 2019Structure, EngineODI 11233289
“MULTIPLE TROUBLE CODES ALL AT ONCE AFTER NOT HAVING ANY TROUBLE CODES AFTER A LONG PERIOD. AS OF NOW 56,000 ORIGINAL MILES. TRACTION CONTROL IMPROPERLY FUNCTIONING CAUSING VEHICLE,S MAXIMUM SPEED TO 3 MPH. MULTIPLE MISFIRE,S WITH NEW SPARK PLUG, NEW SPARK PLUG COIL PACKS AND NEW SPARK PLUG WIRES. GASOLINE LEAK NOT YET NARROWED DOWN TO SPECIFIC LOCATION. NO ENGINE POWER AFTER SHIFTING TO 2ND GEAR. CHECK ENGINE LIGHT IS CONSTANTLY ON HOWEVER WILL GO OUT FOR NO MORE THAN 2 DAYS. VERY STRONG GASOLINE ODOR INSIDE OF THE VEHICLE AFTER STARTUP. LOSS OF ENGINE COMPRESSION. GOODNESS KNOWS WHAT IS NEXT!!!”
Owner complaint to NHTSAFiled Jul 19, 2019Electronic stability control (esc), Engine, Fuel/propulsion systemODI 11233493
“TAKATA RECALL I RECEIVED A CALL REGARDING AN 'ESCALATION' OF MY RECALL AND WHEN I CALLED BACK THE INDIVIDUAL ON THE PHONE SAID THEY COULD NOT FIND MY INFORMATION. THE LAST TIME I TRIED TO GET MY RX8 REPAIRED I WAS TOLD I HAVE TO DRIVE THE CAR OVER AN HOUR TO THE SHOP TO GET AIRBAG FIXED - THIS IS AFTER I RECEIVED A VERY GRAPHIC POSTCARD SHOWING AND TELLING ME HOW I WILL BE INJURED OR KILLED IF I DON'T GET MY CAR REPAIRED. I AM TRYING TO GET THIS CAR REPAIRED, HOWEVER I WILL NOT DRIVE THIS CAR OVER AN HOUR IN HEAVY TRAFFIC IN SOUTH TEXAS HEAT AND HUMIDITY IN ORDER TO MAKE THE REQUIRED 100% COMPLIANCE EASY FOR TAKATA THERE ARE MULTIPLE OTHER RECALLS ON THIS CAR, INCLUDING ON THE ENGINE THAT I HAVE REPLACED 4 TIMES. DEALERS WERE TOLD TO INSTALL THE OLD ENGINES THAT WERE IN THEIR INVENTORY AND NOT INSTALL THE NEW DESIGN. THE OLD ENGINES CONTINUED TO LOOSE COMPRESSION OVER TIME AND EVEN THOUGH MAZDA EXTENDED THE WARRANTY TO 100K ON THE VEHICLE, EVENTUALLY I EXCEEDED 100K - AND THE 4TH ENGINE WENT BAD @102K. MAZDA NEVER REPLACED THE ENGINE WITH AN ENGINE THAT DID NOT HAVE COMPRESSION ISSUES. THE DEALERS USED THE SAME ENGINE AND MAZDA WAITED FOR CONSUMERS TO EXCEED…”
Owner complaint to NHTSAFiled Feb 28, 2019Air bags, Engine, Fuel/propulsion systemODI 11183115
“TAKATA RECALL AFTER RESPONDING TO NUMEROUS NOTICES REGARDING THIS RECALL AND THE DEADLY DANGER OF THE AIRBAGS, MAZDA STILL INSISTS THAT I DRIVE THE VEHICLE AN HOUR AWAY AND IN HEAVY CITY TRAFFIC TO HAVE THE SERVICE DONE TO CORRECT THE AIRBAG ISSUE. IN ADDITION, FOR YEARS THE ENGINE HAD COMPRESSION ISSUES AND I FOUND OUT THAT AFTER REPLACING THE ENGINE 4 TIMES UNDER WARRANTY, MAZDA WAS REPLACING THE ENGINE WITH THE SAME ENGINE THAT HAS COMPRESSION ISSUES AFTER A TIME. I WAS TOLD THAT I COULD BUY A $7,000 GEN II ENGINE THAT DID NOT HAVE COMPRESSION PROBLEMS, OR TAKE THE REPLACEMENT WITH THE POTENTIAL FOR COMPRESSION ISSUES AS A WARRANTY REPAIR. THEY WERE ABLE TO DEPLETE THEIR STOCK OF BAD ENGINES BY USING THEM AS REPLACEMENTS, AND AS SOON AS MY WARRANTY EXPIRED I STILL HAVE A FAULTY ENGINE WHICH ALSO KEEPS ME FROM SAFELY DRIVING DRIVING FOR SERVICE WORK. THE ENGINE WILL LOOSE COMPRESSION AND POWER IN TRAFFIC AND CAUSE A SAFETY ISSUE. I KEEP MY VEHICLES WELL PAST THE 100K MARK BECAUSE I TAKE CARE OF THEM AND KEEP THEM ON THE ROAD. HOWEVER, THAT HAS NOT BEEN THE CASE WITH THIS CAR, DUE TO A COMBINATION OF MAZDA'S BAD FAITH METHOD OF REPLACING FAULTY ENGINES, AND…”
Owner complaint to NHTSAFiled May 8, 2018Air bags, Engine, Fuel/propulsion systemODI 11092422

Showing 6 of 33 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.