Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow the inspection guidelines below to determine if the condition is a result of the normal sweeping process or a failure of the shaft seal.
full bulletin at NHTSA ↗2010 Mazda CX-9 suspension problems
moderate Owners of the 2010 Mazda CX-9 have filed 15 NHTSA complaints about the suspension at roughly $900 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See suspension across all vehicles →
Complaints
15
Recalls
0
Avg fix
$900
| Model year | suspension complaints |
|---|---|
| 2007 CX-9 | 31 |
| 2008 CX-9 | 44 |
| 2009 CX-9 | 5 |
| 2010 CX-9 (this page) | 15 |
| 2011 CX-9 | 8 |
| 2012 CX-9 | 9 |
| 2013 CX-9 | 9 |
| 2014 CX-9 | 4 |
When does it fail?
Of the 15 suspension complaints filed for the 2010 Mazda CX-9, here's the actual mileage breakdown — failures cluster heaviest at 125,000-150,000 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
Among the 10 model years of Mazda CX-9 in our records for suspension problems, this one ranks #3 by owner-complaint volume.
No new NHTSA suspension complaint has been filed on this vehicle in over 6 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering suspension on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow the inspection guidelines below to determine if the condition is a result of the normal sweeping process or a failure of the shaft seal.
full bulletin at NHTSA ↗Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow the inspection guidelines below to determine if the condition is a result of the normal sweeping process or a failure of the shaft seal.
full bulletin at NHTSA ↗Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow the inspection guidelines below to determine if the condition is a result of the normal sweeping process or a failure of the shaft seal.
full bulletin at NHTSA ↗Some customers may complain of signs of oil on the struts or shock absorbers. In most cases the oil that is present is normal, and a result of the oil that remains on the shaft during the normal sweeping process of the shaft seal. Follow the inspection guidelines to determine if the condition is a result of the normal sweeping process or a failure of the shaft seal.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The front suspension on this model fails from interior corrosion of the lower control arms. Owners describe loud squealing, metal-on-metal clanging, rattling, and sudden loss of steering control. One owner's suspension failed catastrophically 23 days after purchase—nine years after the vehicle was supposedly repaired under NHTSA recall 15V451000—causing an axle to break and shred engine belts. Another had one control arm replaced during recall service, but the mechanic found the other side defective and unrepaired just two days later.
The manufacturer issued recall 15V451000 to address corrosion of the suspension's lower control arms. However, across multiple complaints, dealers could not obtain replacement parts within a reasonable time—some reported parts on backorder indefinitely—leaving owners waiting months or unable to complete the repair. One dealer initially charged additional labor for structural work needed to access parts, though Mazda ultimately waived the cost.
Separately, owners report rear subframe corrosion visible at 99,000 miles, with differential mounting bolts compromised. One dealer assessment flagged the vehicle as unsafe to drive. Brake grinding noise and pulsation are also cited, with dealers sometimes misattributing the problem to gravel rather than investigating deeper causes. One owner experienced undiagnosed front-end noise followed by brake booster failure.
Same Mazda CX-9 suspension reports on nearby years: 2007 · 2008
Failure modes owners describe
Front suspension/lower control arm failure
Front suspension components, primarily lower control arms, fail due to interior corrosion. In active failures, owners report loss of vehicle control, loud squealing or metal-on-metal noises, and unstable steering. One owner experienced an axle failure that shredded engine belts; another had a defective lower control arm on the passenger side that went unrepaired during a recall service.
When: 128,000–160,000 miles; one catastrophic failure occurred 23 days after purchase and 9 years after original recall repair supposedly completed in 2017
Symptoms owners cite: Loud squealing noise from front suspension; Loss of vehicle control; Loud metal-on-metal noise (reverse driving); Rattling noise from front of vehicle; Unstable front end; Loose control arms detected during maintenance; Vehicle pulling or steering instability
Codes mentioned: NHTSA campaign 15V451000 (Suspension)
Repairs/costs cited: Replacement of front lower control arms (both driver and passenger side), four-wheel alignment, and in severe cases engine belt replacement. Repairs performed at dealer or independent mechanic; one dealer initially missed passenger-side lower control arm replacement during recall recall service.
Recalls/TSBs owners mention: NHTSA campaign 15V451000 (Suspension) issued for front suspension interior corrosion. Manufacturer refused safety remedy on one vehicle despite prior recall, citing previous repair. Parts availability was a widespread problem—multiple owners reported parts on backorder or unavailable, with dealers unable to complete recall repairs within reasonable timeframes.
Rear subframe corrosion with differential mounting degradation
Rear subframe exhibits premature corrosion that undermines rear differential mounting bolts. Dealer assessment indicated the vehicle is unsafe to drive, with risk of undercarriage separation over potholes. No owner reported prior exposure to salt water or severe road salt.
When: 99,000 miles
Symptoms owners cite: Noise from rear of vehicle; Visible corrosion of rear subframe; Rear differential mounting bolts compromised; Exhaust system corrosion
Repairs/costs cited: Dealer assessment indicated rear subframe replacement and exhaust system replacement required; estimate not provided by owner. One owner noted vehicle was well-maintained and not exposed to salt water or beach conditions.
Brake system issues with dealer misdiagnosis
Owner reported recurring grinding noise during braking over 2–3 years (2011–2014). Dealer repeatedly attributed noise to gravel on brakes and performed cleaning only, despite owner's insistence the noise persisted. No dirt-road use or off-road driving. One separate complaint noted brake pulsation during braking at various speeds unrelated to control arm failure.
When: 2011–2014; pulsation complaint occurred after lower control arm recall inspection
Symptoms owners cite: Grinding noise during braking; Brake pulsation while braking at fast and slow speeds; Steering wheel does not shake; brake pedal does not pulsate
Repairs/costs cited: One owner had brakes changed several times with new rotors and pads on all four tires; brake pulsation persisted after lower control arm recall inspection. Dealer misattributed grinding to gravel in first case.
Recalls/TSBs owners mention: Dealer service twice attributed noise to gravel contamination; no corrective repair attempted. Recall 15V451000 (lower control arms) was inspected but parts not replaced.
Front suspension noise and brake booster failure
Owner reported undiagnosed noise from front tires with no clear diagnosis, followed by brake booster failure a couple of months later. Sequence suggests possible suspension-to-brake system connection, though narrative does not explicitly confirm linkage.
When: Timing relative to mileage not specified
Symptoms owners cite: Noise from front tires while driving; Brake booster failure
Repairs/costs cited: Brake booster replacement performed; cost not specified.
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
There are noises coming from the front tires, when driving. No one could pinpoint the problem. Brake booster went out a couple months later.
Tl* the contact owns a 2010 Mazda cx-9 the contact received notification of NHTSA campaign number: 15v451000 (suspension); however, the part needed to repair the vehicle was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not notified of the issue. The contact had not experienced a failure. VIN tool confirms…
Had suspension trouble with your 2010 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 suspension problem on the 2010 Mazda CX-9?
It's a documented issue but not catastrophic. 15 complaints have been filed. Repairs average $900 and most owners catch it before it causes a breakdown.
At what mileage does the suspension typically fail?
Based on the 15 complaints filed, suspension issues most often appear around 110,333 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $900 for suspension 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 suspension?
No active recalls currently cover suspension 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/2010/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.