My husband had just left our home and luckily were still in our neighborhood when our Mazda cx9 started to stutter and shake and become un-drivable. It rode very rough. It happened with absolutely no warning. We took it to the local repair shop and was told that the check engine error was p0351/po352. They replaced the coil but the problem persisted and we still were unable to drive the car. We…
2007 Mazda CX-9 powertrain problems
moderate 9 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
9
Recalls
0
Avg fix
$2,500
When does it fail?
Of the 9 powertrain complaints filed for the 2007 Mazda CX-9, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA powertrain complaint has been filed on this vehicle in over 11 years — the issue may be aging out of the active population.
What owners are reporting 2 most recent
I have only had this car for one year. I bought it used and have had the "same" problem now "3" times and since I have not had it fixed at a "Mazda" dealership because I am sorry I do not have the $$$ for this and I brought it to my own mechanic, Mazda will not stand by this. The ignition coils have all been replaced now as well as the PCM and now I am told it needs the PCM to be replaced…
Had powertrain trouble with your 2007 Mazda CX-9?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2007 Mazda CX-9?
It's a documented issue but not catastrophic. 9 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Across the 8 complaints that reported odometer mileage, most powertrain failures cluster between 116,000 and 128,000 miles, with the median around 124,230. A quarter of owners report trouble before 116,000; a quarter make it past 128,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/Mazda/CX-9.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.