Is the 2017 Mazda CX-9 reliable?

The 2017 Mazda CX-9 has 78 complaints filed with NHTSA (1.0x the segment average). Our reliability verdict: average. Most common issue: ENGINE problems.

What are common problems with the 2017 Mazda CX-9?

Top problems: ENGINE (43 complaints, avg repair $500); OTHER (9 complaints, avg repair $500); FUEL SYSTEM (6 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2017 Mazda CX-9?

No recalls have been issued for the 2017 Mazda CX-9.

How much does it cost to fuel a 2017 Mazda CX-9?

The 2017 Mazda CX-9 gets 24 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2000. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2017 Mazda CX-9?

Estimated US average full-coverage insurance for the 2017 Mazda CX-9 is approximately $1,758/year (suv-midsize class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2017 Mazda CX-9

Problems, Recalls & Reliability Report

Average

Quick Summary

The 2017 Mazda CX-9 has 78 owner complaints filed with NHTSA — that's 1.0x the segment average of 78. The most common issue is engine problems (55% of all complaints), specifically: 2017 mazda cx 9 signature engine failure at 89,000 miles. july 2021 check engine light came on, this was three months prior to failure. was told it was a known computer issue and was charged over $200 to fix. november 2021 car started running hot while driving down the road. red thermostat came on .

Total Complaints

Recalls Issued

—/5

Safety Stars

1.0x

vs Segment Avg

Known Problems(top 5 of 8)

ENGINE

43 complaints

55%

• 2017 Mazda CX 9 signature engine failure at 89,000 miles. July 2021 check engine light came on, this was three months prior to failure. Was told it was a known computer issue and was charged over $200 to fix. November 2021 car started running hot while driving down the road. Red thermostat came on
• Engine has serious manufacturing defects and a recall should recalled. The engine has casting issues which cause internal issues.
• What component or system failed or malfunctioned, and is it available for inspection upon request? Cylinder head has cracked and the vehicle leaked coolant and overheated while driving leading to engine failure. Vehicle is available for inspection How was your safety or the safety of others put at r

Typical onset: 50K miles Est. repair: $500

“2017 Mazda CX 9 signature engine failure at 89,000 miles. July 2021 check engine light came on, this was three months prior to failure. Was told it was a known computer issue and was charged over $200 to fix. November 2021 car started running hot while driving down the road. Red thermostat came on ”

— NHTSA complaint filing

Fuel Cost Calculator for 2017 Mazda CX-9

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,001

Per month

$167

Per mile

16.7¢

MPG

City driving (worst-case MPG)

$2,182/yr

Highway driving (best-case MPG)

$1,715/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2017 Mazda CX-9

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$1,758

Full coverage / month

$147

Liability only / year

$639

vs US avg

+5%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (suv-midsize)1.05x

× theft risk1.00x

× safety rating1.00x

× vehicle age1.00x

= Full coverage estimate$1758

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Mazda CX-9 Service Intervals

Oil change

8K mi / 12 mo

Tire rotation

8K mi

Brake fluid

24 months

Transmission fluid

60K mi

Engine coolant

120K mi

Spark plugs

60K mi

Cabin air filter

15K mi

Engine air filter

30K mi

Differential (AWD/4WD)

60K mi

SkyActiv-G naturally aspirated engines. AWD models need transfer case and rear differential service every 60K.

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Mazda New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

3 yr / 36K mi

Powertrain

5 yr / 60K mi

Hybrid/EV battery

8 yr / 100K mi

Corrosion (rust perforation)

5 yr / unlimited mi

Roadside assistance

3 yr / 36K mi

These are the terms for a new Mazda. If you're buying a used 2017 CX-9, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Mazda dealer for VIN-specific remaining warranty.

Estimated Repair Costs

ENGINE(~50K mi)

$500

OTHER(~50K mi)

$500

FUEL SYSTEM(~50K mi)

$500

SUSPENSION(~50K mi)

$500

TRANSMISSION(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 78 owner complaints for this specific year, here's what to check or ask about:

☐
ENGINE: 2017 Mazda CX 9 signature engine failure at 89,000 miles. July 2021 check engine light came on, this was three months prior to failure. Was told it was a known computer issue and was charged over $200 to fix. November 2021 car started running hot while driving down the road. Red thermostat came on
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: AFTER DRIVING FOR APPROXIMATELY 1 HR, WARNING MESSAGE FOR FRINT CAMERA AND AUTO BRAKE MALFUNCTION ILLUMINATED. POWER WAS DECREASED QUICKLY, NOT EVEN ENOUGH TINE TO PULL OFF THE ROAD. VEHICLE WAS DISABLED IN FAST LANE OF 4 LAND HIGHWAY. WHILE WAITING FOR TOW TRUCK, AFTER ABOUT AN HOUR THE VEHICLE RES
Typically appears around 50K miles. Repair cost ~$500
☐
FUEL SYSTEM: Driving Eastbound on I470 Wheeling WVA going uphill toward Exit 10 Cabela Rd the car lost power and could not get off the roadway. The engine failed and the car lost power steering. Could not start the car. The car would turn over, but the engine and battery light were on. The car was sideways in
Typically appears around 50K miles. Repair cost ~$500
☐
SUSPENSION: HEARING A KNOCKING NOISE EVERY TIME I HIT AN UNEVEN PAVEMENT AND BUMP ON FRONT SUSPENSIONS. ALSO THERE IS A KNOCKICK SOUND COMING FROM BACK EVERYTIME I BREAK OR STARTS TO ACCELERATE FROM LONG STOP.
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)