There are 1 stored owner reports matching the speed control & cruise leading-label group for the 2009 Mazda CX-9 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)THE TACHOMETER OF THE CAR STICKS IN HIGH REVS (1500-2500),ENGINE ON, CAR IN NEUTRAL, FOOT OFF THE GAS PEDAL, IF THE CAR IS MOVING OVER 20-25MPH (EITHER BY FREE FALLING A HILL OR BEING PULLED) THE TACHOMETER VARIES THE RPM READING TO MATCH SPEED JUST AS IF THE CAR WOULD BE IN 'D' POSITION. I THINK THE ECU HAS A GLITCH OF SOME SORT THAT IGNORES THE GAS PEDAL AND THE SHIFT POSITION IF THE CAR IS MOVING. TAKEN TO THE DEALERSHIP AND THEY SAID CAR IS WORKING AS DESIGNED, THAT THE CAR WILL KEEP RPMS TO MATCH SPEED IN TO AVOID A ENGINE SLOWDOWN OR SOMETHING SIMILAR. MY CONCERN IS THAT THE ECU SHOULD BEHAVE AS EXPECTED SO SHOULD THE TACHOMETER READ 600-800 RPM WHEN IDLING, REGARDLESS OF THE SPEED OF THE CAR IF THE TRANSMISSION IS IN NEUTRAL, IF NOT AT ANY TIME THE ECU MAY DECIDE IT SHOULD REV UP THE ENGINE IF THE SPEED SENSOR GOES BAD. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.