2016 Mazda CX-9 problems
The 2016 Mazda CX-9 has 99 NHTSA owner complaints and no active recalls. Here's where owners say it breaks.
The 2016 Mazda CX-9 has 99 NHTSA owner complaints on file (U.S. federal records, as of July 2026). The most-reported system is engine at 49 complaints, typically surfacing around 115,333 miles (~$3,100 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2013 CX-9 | 68 | 1 |
| 2014 CX-9 | 54 | 1 |
| 2015 CX-9 | 35 | 1 |
| 2016 CX-9 (this page) | 99 | 0 |
| 2017 CX-9 | 61 | 0 |
| 2018 CX-9 | 125 | 1 |
| 2019 CX-9 | 52 | 1 |
Solid reliability overall. Common issues are concentrated in a few systems.
Buyable on the data — keep up the usual maintenance and inspect normally.
- No systemic severe-failure pattern in the complaint record
- Reliability score 7.8/10 — above the segment average
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
Buying a used 2016 Mazda CX-9? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or make the seller fix it before you sign.
What to inspect on this specific car
- engine — 49 owner reports · tends to show around 115,333 mi · ~$3,100 to fix
- electrical — 12 owner reports · tends to show around 29,344 mi · ~$850 to fix
- powertrain — 8 owner reports · tends to show around 13,850 mi · ~$2,500 to fix
- brakes — 5 owner reports · tends to show around 41,276 mi · ~$450 to fix
⚠ The one to take seriously: electrical is flagged severe on this model , showing up around 29,344 mi. Inspect it closely on a test drive.
Recalls to confirm are done
Run the VIN from the listing — no active recalls on this model right now, but confirm none were opened after this car was built.
Verdict for buyers: 7.8/10 model. The priciest documented failure is engine (~$3,100) — get the seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report tells you what this exact car has been through. Smart buyers get both.
See the full pre-purchase inspection checklist →Ask anything about your 2016 Mazda CX-9
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in this vehicle's actual NHTSA record, not generic advice.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
Top trouble spots 5 categories with 3+ complaints
What owners are saying recent NHTSA-filed complaints · verbatim
Dealer diagnosed manufacturing defect that caused crack in head. {Which could lead to engine failure, and subsequent accident due to engine failure during operation.} Engine lost coolant. No overheating noted. No warning/error codes noted.
My engine head cracked whiling driving. sudden lost of complete power in houston texas at a 75mph speed. Was able to safely pull to the side. took it to the dealer where they confirmed it was a cracked engine head. Its a common issue with this model from 2016-2019 no warning…
Car overheated. check front engine and could not see any visible leaks. check all around the engine and found coolant leaking from the back of the engine. confirm by dealer that is leaking at the cylinder head.
Immediately upon making a sharp right turn into a parking spot, the car suddenly accelerated at a very fast pace without me pushing the gas pedal. My immediate reaction was to press on the brake, but it did not stop. The car slammed into a planter in front of me. The car moved…
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Common questions
Is the 2016 Mazda CX-9 reliable?
Mostly yes. With a reliability score of 7.8 out of 10 based on 99 owner complaints filed with NHTSA, the 2016 Mazda CX-9 is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2016 Mazda CX-9?
On the NHTSA data, the 2016 Mazda CX-9 does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 7.8/10 — above the segment average. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2016 Mazda CX-9?
Inspect the engine first — it's the most-reported issue on this model, with 49 owner complaints filed. Typical failure occurs around 115,333 miles. Average repair cost runs about $3,100 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2016 Mazda CX-9 a good used car to buy?
It scores 7.8 out of 10 on our NHTSA-based read of 99 owner complaints. The main thing to watch is engine. Typical failure occurs around 115,333 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2016 Mazda CX-9?
Based on NHTSA records, the most-reported issue is engine, with 49 complaints filed. Typical failure occurs around 115,333 miles. Average repair cost runs about $3,100 at an independent shop.
What's the most expensive thing that goes wrong?
The engine is one of the costlier repair items. Average repair cost runs about $3,100 at an independent shop. Typical failure occurs around 115,333 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Mazda CX-9 has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2016 Mazda CX-9?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 99 complaints on file and the costliest repair averaging $3,100, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.