33 of the 1,827 complaints filed about the Mazda CX-9 are about the throttle and cruise control — 2% of everything owners reported. The worst model year for it is 2012.
33
Complaints
2%
Share of all complaints
6
Crashes
0
Fires
VEHICLE SPEED CONTROL
The vehicle was parked stationary in the driveway with the engine running for 3-5 minutes with the A/C on. The vehicle then accelerated forward into my garage causing damage. Once I entered the vehicle, both the dash and shifter displayed park. Current TCU system internal failures have been reported from the pulling of data from Mazda.
NHTSA complaint #11755863 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
The contact owns a 2011 Mazda CX-9. The contact stated that while attempting to park the vehicle at a slow speed in the driveway, the vehicle suddenly experienced unintended acceleration, lurched forward, and crashed into a tree before coming to a stop. The contact was unable to stop the vehicle during the sudden unintended acceleration. During the failure the vehicle sustained front end damages, but no air bags had deployed. No injuries were reported. The cause of the failure was not yet determined. The contact stated that twice in the day before the unintended acceleration, the vehicle jerked forward in traffic however, the contact attributed the issue to the brake pedal not being firmly depressed or the clutch not properly engaged while shifting gear. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not yet contacted. The failure mileage was 173,000.
NHTSA complaint #11677734 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
While drive i feel like there is sticking something below the car when i am accelerating. And the acceleration became hard. Also i heard a weird noise at that time. Then a saw a leakage below my car.
NHTSA complaint #11665737 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
Driver side Lower control arm fail off from the ball joint
NHTSA complaint #11622620 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL:ACCELERATOR PEDAL
The contact owns a 2021 Mazda CX-9. The contact stated that while accelerating quickly and entering the highway, there was no motive power to the vehicle. While crossing the highway in the right lane, driving at 65 MPH, the vehicle in front moved over; there was a parked vehicle. The contact was able to stop the vehicle before causing a crash. The driver was starting to accelerate, but there was no motive power when the accelerator pedal was depressed. The smart brake system malfunction message was displayed. There were no warning lights illuminated. The contact called the local dealer, who scheduled an appointment. The vehicle was not diagnosed or repaired. The manufacturer was contacted and informed the contact to have the vehicle diagnosed. The failure mileage was approximately 53,186.
NHTSA complaint #11608556 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
Vehicle “surges” at idle. 300-500 RPMS at a time. Sometimes the brakes hold and sometimes not. Have nearly been in 3 collisions the last 2 days because of this issue. The ECM codes indicate throttle body or TPS issue, both of which have been unfounded. Vehicle has 63,000 miles. Researching this topic online found that many others have had this issue with no associated safety recalls noted. I am hoping to bring light to this so someone doesn’t have to be injured or killed to have this rectified.
NHTSA complaint #11575368 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
As I am accelerating to merge onto the highway from an on-ramp, while the gas pedal is depressed, I will get a series of sensor alerts simultaneously (city brake malfunction, park assist malfunction, lane assist malfunction, etc.) and my gas pedal becomes non-functional at 60-70mph. It is terrifying especially when there is other traffic around my vehicle. This exact issue has happened 6 times within the past 12-18 months at seemingly random intervals but always when I am accelerating onto the highway at 50-70mph. I typically pull off to the side of the highway and turn off the vehicle. After letting it sit off for ~30 seconds, I turn the vehicle back on and all of the sensor alerts have cleared and the vehicle functions properly including the gas pedal and I am able to rejoin the highway. I took the car to the Mazda dealership in my state of Vermont a few months ago to have them diagnose and address the problem. They had never heard of this issue and were unable to find the root cause or fix it. Please help, this is dangerous!
NHTSA complaint #11545342 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
On the last week of May, my car started experiencing sputtering and stalling out problems. I made an appointment at Mazda dealership for june 6th.meantime my husband checked all fluids and coolant was low so we topped up. Car was being driven very limited due to safety concerns. Then While driving on the freeway my car displayed a “excessive engine temperature, engine output will be limited” immediately my car reduced speed from about 65mph to under 15 mph while having my whole family including myself and 4 children in the car. We almost got hit by several cars while trying to get over to the shoulder. Once pulled over to the shoulder my husband came and followed me home on the back streets. Once again checked fluids and coolant again was back low this time empty. So In a day it completely had no coolant left. When taken into Mazda dealership for the appointment, customer service was so horrible I ended up leaving and taking my car to a 3rd party service center. Was advised to have a Hydrocarbon test on cooling system that measured at zero, then advised to take it for a diagnostic due to the sputtering, stalling and coolant leak, where they ultimately determined the coolant was leaking into combustion chamber &/or intake system. Pressure test shows drop in pressure, no visible external leaks present. TSB# 01-002/23 pertaining to cylinder head assembly replacement. Now I’m waiting for my appointment at a different Mazda dealership on June 12th! Please help
NHTSA complaint #11526241 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
Traveling on the highway going on a road trip. Had vehicle inspected prior and no fuel system problems were noted. I was going 75mph with my family when there was a coasting feeling in the car. I looked and my check engine light popped on and my car immediately would not accelerate and we quickly lost speed. By the grace of God were we able to pull over safely! Code P0132 was the engine code and after an hour, the engine light went back off and we were able to keep a safe speed traveling home. After speaking with a mechanic and dealership, I learned that this was a common problem with the Denso fuel system. My vehicle was not included in a recent recall that included a different year of my vehicle. If manufacturers are aware that a major defect is out there, how many people have to have an accident or potentially cause a huge accident because a car made 2 years prior with the same part from the same manufacturer has the same dangerous problem? It’s ridiculous and I hope you look at this near fatal issue that has effected thousands of people, whose vehicles’ were made in 2017, 2016, 2015 and are not included in the recall.
NHTSA complaint #11472060 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
TL* THE CONTACT OWNS A 2012 MAZDA CX-9. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 5 MPH WHILE PULLING INTO A PARKING SPACE, THE VEHICLE SUDDENLY EXPERIENCED UNINTENDED ACCELERATION AND DROVE FORWARD CRASHING INTO A WOODEN SEATING BENCH WHICH WAS PUSHED INTO A BUILDING. DURING THE INCIDENT THE DRIVERS FOOT WAS PRESSING THE BRAKE PEDAL. NO INJURIES WERE REPORTED. A POLICE REPORT WAS TAKEN AT THE SCENE AND THE VEHICLE WAS TOWED AWAY. THE CAUSE OF THE FAILURE WAS NOT YET DETERMINED. THE MANUFACTURER AND LOCAL DEALER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 112,000. THE VIN WAS NOT AVAILABLE.
NHTSA complaint #11397387 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
DRIVING ON RTE 3 N IN BRAINTREE. CAR WAS DECELERATING WHILE I HAD MY FOOT ON GAS. LOST STEERING AND BARELY MADE IT TO BRAKE DOWN LANE. THIS CAR HAS 72K MILES ON IT. NEEDS NEW ENGINE.
NHTSA complaint #11267063 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
TL* THE CONTACT OWNS A 2012 MAZDA CX-9. WHILE ATTEMPTING TO ACCELERATE FROM A TRAFFIC LIGHT, THE ACCELERATOR PEDAL WAS DEPRESSED; HOWEVER, THE VEHICLE FAILED TO RESPOND. THE CONTACT STATED THAT THERE WERE NO WARNING INDICATORS BEFORE OR AFTER THE FAILURE. THE BRAKE PEDAL ALSO BECAME EXTREMELY DIFFICULT TO DEPRESS. THE VEHICLE WAS TOWED TO CONTINENTAL MAZDA (LOCATED AT 2363 AURORA AVE, NAPERVILLE, IL 60540, (630) 352-5900) WHERE IT WAS DIAGNOSED THAT COOLANT ENTERED THE ENGINE OIL AND CAUSED THE ENGINE TO FAIL. THE CONTACT WAS INFORMED THAT THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED AND PROVIDED CASE NUMBER: 1-2189354066. THE APPROXIMATE FAILURE MILEAGE WAS 52,000.
NHTSA complaint #11218471 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
I WAS TURNING RIGHT INTO A PARKING SPACE WITH MY FOOT ON THE BRAKE, WHEN THE CAR SUDDENLY ACCELERATED. THE ENGINE REVVED UP AND THE CAR DARTED FORWARD. FOR A SPLIT SECOND I LIFTED MY FOOT TO MAKE SURE I WAS NOT PRESSING ON THE ACCELERATOR, AND IMMEDIATELY PUSHED BACK DOWN ON THE BRAKE AS HARD AS I COULD; THE CAR CONTINUED TO SPEED FORWARD. INSTINCTIVELY I KEPT THE WHEEL TURNED TO THE RIGHT TO AVOID CRASHING INTO THE BUILDING IN FRONT OF ME AS THE CAR JUMPED THE CURB, BUT I HIT 2 PARKED CARS. ONCE I WAS ALMOST STOPPED BY HITTING THE 2 PARKED CARS, I QUICKLY TURNED THE KEY OFF AND PUT THE CAR IN PARK. I HAVE NEVER EXPERIENCED THIS ISSUE BEFORE; AND LET ME TELL YOU, I WAS TERRIFIED. I HAVE PICTURES THAT SHOW TIRE MARKS EITHER FROM THE CARS ACCELERATION OR DRAGGING THE BACK WHEELS FROM PUSHING ON THE BRAKE.
NHTSA complaint #11206767 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
THE TRANSFER CASE IS LEAKING AND GOING TO GO COMPLETELY OUT ON MY 2012 MAZDA CX-9, I NOTICED THE SAME GEAR SHIFTING PROBLEM IN MY 2004 MAZDA 6 WAGON. THE CAR FEELS LIKE DRIVING A STICK, IT JOLTS WHEN SHIFTING TO DRIVE AND WHILE MOVING IT FEELS LIKE IT IS SHIFTING EARLY. THIS IS A KNOWN PROBLEM WITH MAZDA BUT A RECALL IS YET TO SURFACE FOR THIS ISSUE.
NHTSA complaint #11093736 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
CAR SURGES UNEXPECTEDLY EVEN WHEN GAS PEDAL NOT ENGAGED - CAN CAUSE A RUSHED FORWARD OR REVERSE MOTION, PUTTING PEDESTRIANS OR OTHER CARS AT RISK. THIS HAPPENS DAILY. PROBLEM WAS IDENTIFIED BY DEALERSHIP SEVERAL MONTHS AGO. THERE IS A RELATED OIL LEAK.
NHTSA complaint #11093569 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
TL* THE CONTACT OWNS A 2012 MAZDA CX-9. WHILE DRIVING 55 MPH, THE VEHICLE INDEPENDENTLY ACCELERATED IN EXCESS OF 75 MPH. THE CONTACT WAS ABLE TO STOP THE VEHICLE BY SHIFTING INTO NEUTRAL AND SHUTTING OFF THE ENGINE. THE CONTACT WAITED A FEW MINUTES AND RESTARTED THE ENGINE, AND THE VEHICLE RETURNED TO NORMAL. THE VEHICLE WAS DRIVEN TO THE DEALER SILL-TERHAR MAZDA (LOCATED AT 1551 US-287, BROOMFIELD, CO 80020; (303) 469-1801), BUT THE FAILURE COULD NOT BE DUPLICATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS CONTACTED AT 800-222-5500 AND STATED THAT THEY COULD NOT ASSIST WITHOUT DUPLICATING THE FAILURE. THE MANUFACTURER ALSO STATED THAT THEY NEEDED TO SPEAK WITH THE TECHNICIAN. THE MANUFACTURER DID NOT CALL THE CONTACT BACK. THE APPROXIMATE FAILURE MILEAGE WAS 70,000.
NHTSA complaint #11021594 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
TOOK MY CAR TO DEALER 2-3 TIMES FOR THE BRAKES, WAY BEFORE MY WARRANTY WAS ANY WHERE NEAR EXPIRING, BECAUSE I KEPT HEARING A GRINDING SOUND. THEY KEPT TELLING ME NOTHING WAS WRONG, THAT MY BRAKES HAD SOME GRAVEL ON THEM AND THEY JUST CLEANED THEM. I DON'T TRAVEL ON DIRT ROADS OR ANYTHING, CITY ROADS/HIGHWAYS. NO OUT OF TOWN TRAVEL AT ALL, ACTUAL ONLY IN TOWN TRAVEL, HOME/WORK. MY 2ND CONCERN IS, WHILE DRIVING SOMETIMES MY SPEED SEEMS TO SHIFT, AS IF THE GEARS ARE SHIFTING. 3RD CONCERN IS, I RECEIVED A RECALL NOTICE, DON'T RECALL WHAT IT WAS ABOUT BUT I TOOK IT TO THE DEALERSHIP AND I WAS TOLD THEY DONE THAT WORK LAST TIME I CAME IN BUT I DON'T BELIEVE IT WAS DONE, SINCE THEY HAVEN'T BEEN HONEST WITH ME BEFORE. THEY DIDN'T EVEN LOOK AT THE LETTER. IF I RECALL CORRECTLY BRAKE COMPLAINTS/ SERVICE STARTED 2011 OR 2012 TO 2014....
NHTSA complaint #11005438 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
I TOOK MY CAR TO HALL IN BROOKFIELD WI TO FIX A RECALL ISSUE. THE DEALER TOLD ME THEY FIXED THE RECALL ISSUE BUT NOTICED ANOTHER PROBLEM THAT REQUIRES THE REPLACEMENT OF THE DIFFERENTIAL BUSHINGS BECAUSE THEY WERE TORN. THEY CHARGED ME OVER $500 FOR THIS ISSUE AND I BELIEVE THE ISSUE WAS EXASPERATED BY THE RECALL ISSUE AND I AM NOT SURE WHY I HAD TO PAY. I HONESTLY BELIEVE IT WAS A WAY FOR THE DEALER TO CHARGE ME FOR THE RECALL WORK BECAUSE IT WAS SUPPOSED TO BE FREE. I AM ATTACHING RECEIPTS FOR THE WORK HALL DID TO THIS COMPLAINT. NOW MY CAR IS HAVING ISSUES WITH PROPERLY ACCELERATING AND IS VERY LOUD.
NHTSA complaint #10884039 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
UNINTENDED ACCELERATION IN PARKING LOT. CAR WAS IN DRIVE, FOOT LIGHTLY ON BRAKE WAITING ON CAR IN FRONT TO VACATE PARKING SPOT. ENGINE SUDDENLY SURGED AND TRANSMISSION MADE STRANGE SOUND. BARELY AVOIDED RUNNING OVER AN ELDERLY PEDESTRIAN. THIS IS ABOUT 4-5 TIME THE CAR HAS DONE THIS IN THE LAST 6 MONTHS USUALLY WHILE WAITING IN A LINE OF CARS WITH FOOT ON BRAKE.
NHTSA complaint #10821564 — an unverified report by a vehicle owner.
VEHICLE SPEED CONTROL
TL* THE CONTACT OWNS A 2011 MAZDA CX-9. THE CONTACT STATED THAT WHILE STOPPED AT A STOP LIGHT, THE ACCELERATOR PEDAL WAS DEPRESSED BUT THE VEHICLE FAILED TO ACCELERATE AS THE WARNING INDICATORS FLASHED AND THE ENGINE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 66,727. UPDATED 06/15/16*LJ THE CONSUMER STATED SHE ACCELERATED FROM A STOP LIGHT, AS SHE TURNED THE CORNER. SHE THEN REALIZED, SHE COULD NOT BRAKE, OR STEER THE VEHICLE. SHE HIT THE EMERGENCY BRAKE AND TURNED THE VEHICLE OFF. THE DEALER BELIEVED IT WAS A VACUUM PROBLEM AS SHE BRAKED SLIGHTLY WHEN SHE TURNED THE CORNED. UPDATED 06/16/16.
NHTSA complaint #10810700 — an unverified report by a vehicle owner.