The Lemon Index

All cars · Mazda CX-9 · 2018

2018 Mazda CX-9. Advanced data.

The raw numbers: engines, recall campaign numbers, failure mileage and manufacturer communications.

Lemon Index56100 = average car
Complaints16NHTSA, first 3 years
Sold28,257U.S. model year
Per 100K sold57complaints
Year rank#5 of 10#1 = fewest complaints

Engines and drivetrains 2

EngineTransmissionDriveCity / hwy / combinedFuelFuel cost/yr
2.5L 4-cyl turboAuto (S6)FWD22 / 28 / 24Regular$2,600
2.5L 4-cyl turboAuto (S6)4WD20 / 26 / 23Regular$2,700

EPA test versions for this model year. Fuel cost is the EPA's current estimate, not the price in that year.

Failure mileage by system

Half of owners who gave a mileage reported the problem between 10,500 and 67,200 miles. Median 27,000, from 16 complaints with a mileage.

SystemMedianMiddle halfComplaints
Brakes28,00018,200–37,0005

Mileage owners typed into their NHTSA complaint, all complaints for this model year. People report some problems late, so read it as a range.

Complaints by system

SystemShare of complaints
Brakes38%
Electrical31%
Engine19%
Fuel or ev drive system12%
Airbags12%

One complaint can name more than one system, so shares can add to more than 100%.

Severity, all complaints

TotalCrashesFiresInjuriesDeathsTows
12841204

As reported by owners to NHTSA. Not verified.

Recall campaigns 2

  • 21V875000 Nov 2021 Fuel System, Gasoline / Delivery / Fuel Pump

    Defect. Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.

    Risk. Fuel pump failure may cause an engine stall, increasing the risk of a crash.

    Remedy. Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 5321K.

  • 19V403000 May 2019 Electrical System / Wiring

    Defect. Mazda North American Operations (Mazda) is recalling certain 2018 CX-9 vehicles. The wiring harness may disrupt electrical communications and disable the passenger frontal air bag, turn signals, and/or engine starting system.

    Risk. The passenger frontal air bag may not deploy, increasing the risk of injury. Inoperable turn signals prevent the driver from signaling to other drivers, increasing the risk of crash.

    Remedy. Mazda will notify owners, and dealers will repair the wiring harnesses, free of charge. The recall began July 26, 2019. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 3419E.

Manufacturer communications 470

Mazda filed 470 service communications for this car with NHTSA.

  • Due to a change in the 2017 Mazda3, Mazda6 and 2018 CX-9 A-pillar wiring harness, the EC…
  • Check Engine Light ON with DTC P0171 (Fuel Trim too Lean) and possibly DTCs
  • Lack of power

Crash ratings by version

VersionOverallFrontSideRollover
Mazda CX-9 SUV FWD★★★★★★★★★☆★★★★★★★★★☆
Mazda CX-9 SUV AWD★★★★★★★★★☆★★★★★★★★★☆

Safety equipment

Electronic stabilityForward collision warningLane departure warning
StandardNoNo

Nearby model years

YearLemon IndexComplaintsSoldTop system
201715425,828Suspension
2018561628,257Brakes
2019541526,861Electrical
202031827,638Engine
2021933134,493Engine

Sources: NHTSA complaints, recalls, investigations and manufacturer communications; EPA fuel economy data; YouTube video titles. Complaints are owner reports, not proof of a defect.

Updated

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