2008 Mazda CX-9 Vehicle speed control Problems
- Complaints
- 3about this part
- Share
- 2%of 172 total for the year
- Median mileage
- 71,350miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the vehicle speed control of the 2008 Mazda CX-9, 2% of the 172 complaints for this model year. Where a mileage was given, the median is 71,350 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I am reporting two incidents of engine revving that occurred without my foot on the accelerator. In the first incident (sep 2015), I started the car in the driveway. After a couple seconds, the engine started revving really fast even though my foot was on the brake, not on the accelerator. I remained in park and turned off the ignition. After re-starting the car, everything behaved normally. In the second incident (dec 6, 2015), I started the car, put it in reverse, and was backing up in a grocery store parking lot. The car suddenly acccelerated backward with the engine revving. …”
NHTSA complaint #10808645, filed 2015-12, 92,300 miles“I was referred to contact you regarding unintended acceleration cases with the Mazda cx-9s. I was a victim of this on january 2, 2013. Upon researching, I was made aware that several other consumers have posted their experience that exactly matched what I experienced. I need to take legal action and warn other innocent drivers before someone is killed or maimed. I have been seeking legal action because Mazda is doing a complete cover up, identical to how toyota handled their unintentional acceleration cases for many years before people began dying. …”
NHTSA complaint #10493170, filed 2013-01, 50,400 miles“I'm having with my 09 CX-9. Lightly accelerating around 30-35mph, sometimes the whole car shakes. Doesn't happen all the time. Heavier acceleration or no acceleration fixes the problem but had dobbs check it, but nothing shows up on diagnostics and at first they couldn't get it to repeat. I had to explain that it doesn't happen when you accelerate, but when you sort of hover not giving it gas and not braking and only when at 35-40 MPH.”
NHTSA complaint #10625793, filed 2014-08Related service bulletins
- 10186703Jan 21, 2021In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer
- 10148072Oct 10, 2018In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer. NOTE: Tampering with a motor vehicle odometer is strictly prohibited by…
- 10144333Aug 31, 2018In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer. NOTE: Tampering with a motor vehicle odometer is strictly prohibited by…
Vehicle speed control: other model years
Other parts of the 2008 Mazda CX-9
55 complaintsBrakes
30 complaintsAir bags
28 complaintsTransmission and drivetrain
27 complaintsSteering
19 complaintsWheels
16 complaintsElectrical system
13 complaintsOther or unknown
13 complaintsSeats
7 complaintsEngine
6 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsElectronic stability control
2 complaints
← All problems reported for the 2008 Mazda CX-9
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology