2016 Mazda CX-9 Engine Problems
Engine problems account for 70 of 105 total complaints (67%) filed on the 2016 Mazda CX-9, the highest share of any model year in this range. Owners report cracked cylinder heads causing coolant loss and overheating, with a median failure mileage of 50,000 miles. NHTSA lists no related recall for this issue.
- Engine complaints
- 70
- 67% of 105
- Crashes reported
- 1
- Fires reported
- 0
- Injuries reported
- 0
- Median mileage
- 50,000 mi
- Related recalls
- 0
Typical engine symptoms owners report
- Cylinder head cracks and leaks coolant, sometimes with no warning light before overheating begins.
- Coolant leaking from the rear of the engine near the turbocharger raises overheating and fire-risk concerns.
- Coolant mixing with engine oil after a head crack leads to permanent internal damage requiring full engine replacement.
- Engine coolant high-temperature warning appears suddenly while driving on the highway with no safe place to stop.
- Engine hesitates or fails to accelerate and shift properly, making it hard to merge or change lanes.
- Water pump failure is diagnosed as the source of coolant loss and rising engine temperature in some cases.
When 2016 Mazda CX-9 engine complaints were filed
First complaint Dec 29, 2017, latest Sep 21, 2026.
Engine recalls for the 2016 Mazda CX-9
No safety recalls on record for this model year.
Engine complaints by CX-9 model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- Are engine problems common on the 2016 Mazda CX-9?
- Yes. NHTSA data shows 70 of the 105 total complaints filed for the 2016 CX-9, or 67%, involve the engine, one of the highest shares among CX-9 model years.
- What is the main engine issue owners report?
- Owners most often describe a cracked cylinder head that leaks coolant, leading to overheating and, in some cases, full engine replacement.
- At what mileage do these engine failures usually happen?
- NHTSA complaint data shows a median mileage of 50,000 miles at the time of failure.
- Is there a recall for the 2016 CX-9 engine problem?
- No related recall is listed in NHTSA data for this engine issue on the 2016 CX-9.
- Did these engine problems cause any crashes or injuries?
- NHTSA data lists 1 crash and 0 injuries and 0 fires tied to these complaints.