2018 Mazda CX-9 Mazda CX-9 2018

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2018 Mazda CX-9 repairs by problem area

Engine (17%)

Transmission and Drivetrain (0%)

Brakes and Traction Control (0%)

Suspension and Steering (0%)

Electrical and Air Conditioning (83%)

Paint, Rust, Leaks, Rattles, and Trim (0%)

Other (0%)

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Chart based on 6 repairs.
See TSBs and recalls for the 2018 Mazda CX-9.

2018 Mazda CX-9 repair cost distribution

$2500+ (0%)

$1000 - $2499 (0%)

$500 - $999 (0%)

$100 - $499 (0%)

< $100 (100%)

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Chart based on 5 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2018 Mazda CX-9 4dr SUV

turbocharged 250hp 2.5L I4 6-speed shiftable automatic AWD

Mazda CX-9 in Oregon, United States
Sep 2017 - May 2021
Jun 2018

4000 mi
Battery died for no known reason. Dealer had to clear a smart key fault after jumping the vehicle. No issue with vehicle while the fault was present. 
Mazda CX-9 in Maryland, United States
Jan 2018 - Jun 2018
Mar 2018

200 mi
Second row USB ports inop 
Mazda CX-9 in Pennsylvania, United States
Jan 2018 - Jun 2019
Jun 2018

3000 mi
Computer, software upgrade, reprogram 
Sep 2018

7000 mi
2x all warning and indicator lights,alarms etc,came on during driving. vhe running fine at the time,and all warnings ,alarms etc,were unfounded. dealer along with Mazda,checked all wiring systems, connections ecm etc,tested and drove vhe.see what happens in future?according to dealer and Mazda NOT a common occurrence!? do not know if repair is successful? 
May 2019

14000 mi
same as prior,all alarms and warning lights ...shop checked wiring,connections,and reprogrammed 
Mazda CX-9 in Virginia, United States
Dec 2020 - Dec 2021
Jun 2020

23000 mi
faulty ECU causing multiple failures. Vehicle would go into a limp mode. Replacing the ECU remedied the issues 

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2017 Mazda CX-9 4dr SUV

turbocharged 250hp 2.5L I4 6-speed shiftable automatic AWD

Mazda CX-9 in Louisiana, United States
Nov 2017 - Jun 2018
May 2018

7000 mi
Ignition coil failed. 
Mazda CX-9 in Florida, United States
Jun 2017 - Jul 2018
Nov 2017

8000 mi
System locked up to the point could not turn off the radio or control in any way. Would also reboot while driving. 
Mazda CX-9 in Saskatchewan, Canada
Oct 2020 - Oct 2021
Sep 2020

53630 mi

C $205
OEM battery failed. Replaced with Group 24F AGM battery. 
Mazda CX-9 in Massachusetts, United States
Mar 2017 - Jul 2020
Jan 2018

6000 mi
[tie-rod] was loose needed to be tightened 
Mazda CX-9 in New Jersey, United States
Jul 2017 - Jun 2022
Feb 2020

36000 mi

US $150
Battery needed replacement and it was close to end of warranty period. 
Mazda CX-9 in Florida, United States
Aug 2017 - Jun 2018
Mar 2018

8100 mi
Infotainment system crashing, rebooting, going unresponsive when Bluetooth devices are connected. Right headlight judders when turning in/out of a curve (car equipped with adaptive “steerable” headlights) Moonroof switch sticks, occasionally requires several pushes to open moonroof Right side headlight not properly aimed after headlight replacement. Returned to adjust aim. Tonight I realized it’s still misaligned. Right side headlight unit was replaced last week. Vehicle returned to me with badly mis-aligned headlight. Returned for adjustment. Came back still out of alignment - worse than before. Tech writer assured me it was the best they could achieve (at 6 feet away from a wall, the headlights were noticeably off axis). New service writer & new tech managed to get it right this time. 
May 2018

12000 mi
On highway, a thump then grinding sound happened. Pulled over and found the lower engine cover had torn away from the front attachpoints and bent backwards, jammed into the engine and dragging the roadway. Could not dislodge on the roadside and had to have it towed. Classic Mazda in Orlando’s solution? Bent the damaged part back into place and drill new holes into it to reattach it! I wish I could say I’m making this up. This is how they delivered it back to me (mind you, this is Mazda’s flagship vehicle... $44,000 sticker price). I refused to accept it in this condition and insisted they replace the part and attach it the way it is supposed to be attached. The vehicle is sitting at the dealership waiting for the parts. Going on 3 days now. A thump/strange noise from the right front wheel area is periodically heard going over uneven pavement, changes in grade, or speed bumps. Lower engine dust shield had been haphazardly repaired by the dealer. Part ordered and replaced 2 days later Returned vehicle to dealer for a complete inspection of this week’s repair, as well as all prior repairs. Car is 8 months old and has had the following major repairs: - Replaced navigation screen and software update due to repeated crashes and reboots - Replaced right headlight unit due to jitter/shutter when hitting bumps or in curves - Lower engine shield/cover fell while on the highway, peeling itself backwards and wedging against the vehicle floorpan - Groan noise from right front wheel when hitting uneven pavement/bumps. Unresolved — “can’t duplicate” 
Mazda CX-9 in Texas, United States
Jun 2017 - Jun 2018
Oct 2017

4000 mi
minor issue with plastic wheel arch trim 
Mazda CX-9 in Manitoba, Canada
Jan 2017 - Oct 2021
Jan 2018

6510 mi
Driver's side mirror would wiggle while driving on highway - dealer replaced mirror assembly that was still under warranty 

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2016 Mazda CX-9 4dr SUV

turbocharged 250hp 2.5L I4 6-speed shiftable automatic FWD

Mazda CX-9 in Texas, United States
Jul 2016 - Mar 2018
Jun 2017

13000 mi
There was a clunking noise in the rear right suspension and a suspension part had to be replaced. 
Mazda CX-9 in Texas, United States
Oct 2016 - Oct 2019
Aug 2017

17000 mi

US $125
Other car pulled off wheel base trim and had to have it replaced 
Mazda CX-9 in Texas, United States
Jan 2021 - Jan 2022
Jan 2022

79000 mi

US $1600
PCM software update to fix CEL 

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2016 Mazda CX-9 4dr SUV

turbocharged 250hp 2.5L I4 6-speed shiftable automatic AWD

Mazda CX-9 in New York, United States
Apr 2016 - Aug 2018
Jun 2017

15000 mi
Oil pan drain was damaged by dealer tech. It was replaced by dealer under warranty. Infotainment screen was replaced by dealer under warranty 
Mazda CX-9 in Rhode Island, United States
Dec 2016 - Jun 2022
Jun 2022

22000 mi

US $100
Replaced the driver seat cable (was squealing when seat was moved) 
Mazda CX-9 in Indiana, United States
Aug 2016 - Nov 2021
Feb 2017

7000 mi
Oil change reminder popped on and would not shut off despite the system showing we still had 3000 miles to go until next service. The Mazda dealer was stumped and found only switching to the flexible intervals 'fixed' the problem. Dealer also updated the system software because of Bluetooth issues 
Jun 2017

13000 mi
Right rear spring started sounding like a old bed at a sketchy motel. Dealer replaced coil spring and rubber protector. Infortainment system was acting glitchy again, with occasional long startup times and occasional reboot while driving. 
Mazda CX-9 in Alberta, Canada
Apr 2018 - Jun 2018
Jun 2018

15190 mi
TSB on right rear springs 

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2018 Mazda CX-9 Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2018 Mazda CX-9 problems occur, check out our car reliability stats.