The Lemon Index2021 Mazda CX-9.
The 2021 Mazda CX-9 is about average by owner complaints: 31 complaints in its first 3 years and a Lemon Index of 93, where 100 is the average car. Owners complain most about engine, it has 1 recall, and it gets 23 to 24 mpg combined. The best Mazda CX-9 year is 2017.
Before you buy. What matters most for this car.
How serious. Out of 40 owner complaints, owners reported:
Every Mazda CX-9 year. 2021 is highlighted. Lower is better.
What owners complain about most. From owner complaints to the government.
Share of this year's owner complaints filed with NHTSA, not the share of cars that break. One complaint can name more than one area.
Recalls 1
- seats 2021
The left-side second-row seat may unexpectedly slide forward during a crash.
Recall repairs are free at any dealer. A recall only matters if it's still open on that exact car, so check its VIN.
Problems Mazda told dealers about
Mazda sent dealers 428 repair notes for this car. The ones about its biggest problems:
- Some customers may complain about high engine oil consumption
- CHECK ENGINE LIGHT ON with DTC P2610 and P2507 stored in memory after engine
- If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s)…
Ask a seller or mechanic if these were done. Some are free under warranty or a special program.
Safety
Crash test details
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| Mazda CX-9 SUV AWD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| Mazda CX-9 SUV FWD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
Fuel cost and engines
About $2700–2800 a year in fuel (EPA estimate). Engines: 2.5L 4-cyl.
In owners' words
A lot of engine oil consuption, 1 quart per 2500 miles.
2021 Mazda CX-9 owner · NHTSA complaint 11494001
More owner reports
Massive oil consumption. Uses 1 quart or more of engine oil at around 3,000 miles after oil change. Low oil light comes on...
NHTSA complaint 11481982
Every 4,000 miles my engine oil warming light comes. When the dealership checked my oil level, it was about a quart low.
NHTSA complaint 11469667
Quick answers
Is the 2021 Mazda CX-9 reliable?
About average by government complaints. It drew about the average number of complaints filed with NHTSA in its first 3 years, per car sold (Lemon Index 93; 100 is average, lower is better). The best Mazda CX-9 year by this measure is 2017.
What are the most common 2021 Mazda CX-9 problems?
In owner complaints to the government, the parts named most are engine (52%), brakes (13%) and automatic emergency braking (10%). That is the share of complaints, not the share of cars that break.
How many recalls does the 2021 Mazda CX-9 have?
1 safety recall (latest: seats). Recall repairs are free at any dealer; check a specific car's VIN at nhtsa.gov/recalls.
What gas mileage does the 2021 Mazda CX-9 get?
23 to 24 mpg combined, depending on the engine (EPA estimate).
Is the 2021 Mazda CX-9 safe?
NHTSA gave it 5 out of 5 stars overall in its best tested version. Ratings differ by body style, and the full table is on the advanced page.
Does the 2021 Mazda CX-9 have transmission problems?
Transmission and drivetrain issues aren't among its top 5 complaint areas.
How much does the 2021 Mazda CX-9 cost in fuel a year?
About $2700 to $2800 a year, by the EPA's current estimate.
What engines does the 2021 Mazda CX-9 have?
2.5L 4-cyl.
What Mazda CX-9 year is better than the 2021?
By owner complaints per car sold, the best recent years are 2017, 2022 and 2020.
Lemon Index = safety complaints filed with the U.S. government (NHTSA) in a car's first 3 years, per car sold, against the average car of the same model year. 100 is average; lower is better. A complaint is an owner's report, not a confirmed defect. How it works