FREE VEHICLE RESEARCH
2018 Mazda CX-9 2WD
The 2018 Mazda CX-9 2WD has 2 NHTSA safety recalls on file, 124 owner complaints, and gets about 24 mpg combined. Here's the full free record from NHTSA and the EPA.
SPECS
2018 Mazda CX-9 2WD at a glance
- Engine
- 4-cyl 2.5L
- Cylinders
- 4
- Displacement
- 2.5 L
- Drivetrain
- Front-Wheel Drive
- Transmission
- Automatic (S6)
- Body
- Small Sport Utility Vehicle 2WD
- Fuel
- Regular
Source: EPA / NHTSA vPIC, as of July 10, 2026.
SAFETY RECALLS · NHTSA
2 openFuel System, Gasoline
12/11/2021
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.
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.
Electrical System
30/05/2019
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.
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.
NHTSA has opened one or more investigations covering this model. Recalls can follow an investigation, so check NHTSA for the latest before you buy.
Open safety recalls are free to fix at any franchised dealer. What recalls mean → Source: NHTSA recalls, as of July 10, 2026. Recalls can be issued any time, confirm by VIN at nhtsa.gov before you buy.
OWNER COMPLAINTS · NHTSA
124 filed- 59
ENGINE
My wife was driving the vehicle when the emergency lights started going off. She had to pull over because the car wouldn't run and said it was overheated. All the maintenance has been done to the car. We took it to the dealership and they s
- 17
UNKNOWN OR OTHER
1. The navigation has a frosted crackle appearance framing the screen. It is difficult to read the navigation when needed. I know this has happened to other models of this vehicle and those were recalled and covered. 2. The brake senor
- 13
ELECTRICAL SYSTEM
The liftgate (trunk) opens sporadically. The system keeps trying to open the truck and it's causing a parasitic drain on my battery. I was stranded 2 hours from my home due to this. My trunk would sporadically beep three times, that is the
- 12
POWER TRAIN
My 2018 Mazda CX-9 with the SKYACTIV-G 2.5T engine has been diagnosed with a cracked cylinder head, cracked exhaust manifold, and cracked turbocharger at approximately 88,000 miles. This is a known design defect documented in Mazda TSB 01-0
- 5
SERVICE BRAKES
My 2018 Mazda CX-9 experienced catastrophic engine damage after a radiator failure allowed coolant to enter the engine. The vehicle provided no dashboard warning, overheating alert, or coolant warning before the failure occurred. Modern veh
- 3
STEERING
Steering makes knocking noises when turning. It happened suddenly with no damage to car to cause it. It was fine prior to parking, when the car was restarted and the wheel was turned knocking noise started. Mechanic found there is a tsb for
Problems owners reported to the government, useful for spotting patterns, not proof any one car has them. What complaints mean → Source: NHTSA complaints, as of July 10, 2026. Owner-submitted reports, not verified diagnoses.
CRASH-TEST RATINGS · NHTSA NCAP
- Overall
- ★★★★★
- Frontal
- ★★★★☆
- Side
- ★★★★★
- Rollover
- ★★★★☆
Government crash tests of this model; not every trim or year is tested. Source: NHTSA NCAP, as of July 10, 2026.
FUEL & RUNNING COST · U.S. EPA
- Combined
- 24 mpg
- City / Hwy
- 22 / 28
- Est. fuel / yr
- $2,600
- CO₂ / mi
- 362 g
EPA lab estimates; real mpg varies by how you drive. Source: EPA fueleconomy.gov, as of July 10, 2026. Annual cost assumes 15,000 mi/yr at EPA's reference price.
All figures above come from free U.S. government sources: NHTSA (recalls, complaints, investigations, crash tests) and the EPA (fuel economy and specs). We don't show market price, insurance cost, or proprietary reliability scores, because there's no free, reliable public source for them. For a verdict on a specific listing, with a fair-offer number and what to ask the seller, that's the VINly app.
BEFORE YOU BUY
What to check on this car
Confirm the recalls were fixed
This model has 2 open NHTSA recalls (including the fuel system, gasoline). Recall repairs are free at the dealer, so ask the seller for proof the remedy was performed, or verify by VIN at nhtsa.gov before you buy.
Have a mechanic check the engine
Owners report problems with the engine more than anything else on this model. Call it out specifically during a pre-purchase inspection.
Watch for a pending investigation
NHTSA has an open investigation covering this model. A recall can follow an investigation, so check nhtsa.gov for the latest before you commit.
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Test-drive the basics
Cold start, full-lock steering both ways, firm brakes with no pulsing, smooth shifts, and every electronic feature. Warning lights should come on at key-on, then go out.
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Check the title and the VIN
Confirm the title status in hand matches the listing, and that the VIN matches across the dash, door jamb, and title. VINly does not show ownership or accident history, for that, run a paid report like Carfax.
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Ask the seller the right questions
Why they are selling, any service records, accident or panel-repaint history, how many owners, and whether any open recalls were completed.
See the full used-car inspection checklist. None of this replaces a hands-on inspection by a mechanic.
Quick answers
What is recalled on the 2018 Mazda CX-9 2WD? +
NHTSA lists 2 safety recalls for the 2018 Mazda CX-9 2WD, including the fuel system, gasoline. See the full list above, and confirm by VIN at nhtsa.gov.
What gas mileage does the 2018 Mazda CX-9 2WD get? +
The EPA rates the 2018 Mazda CX-9 2WD at 24 mpg combined (22 city / 28 highway), about $2,600 a year in fuel.
How safe is the 2018 Mazda CX-9 2WD? +
NHTSA's NCAP program gives the 2018 Mazda CX-9 2WD 5 out of 5 stars overall, with 4 stars for rollover resistance.
What do owners complain about on the 2018 Mazda CX-9 2WD? +
Owners have filed 124 complaints with NHTSA for the 2018 Mazda CX-9 2WD, including 4 involving a crash. The most-reported area is engine.
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