2018 Mazda CX-9 power train problems
13 owner complaints filed with NHTSA name the power train on the 2018 Mazda CX-9 — 10% of all complaints for this model year.
What owners report
“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 01-002/23 and addressed by Customer Service Program CSP11…”
filed Apr 14, 2026
“my 2018 MAZDA CX-9 safety issue SCBS / SBS, LAS / LDWS, MASTER AND/OR HBC WARNING LIGHTS Forward sensing camera (FSC) stops functioning cause my car run rough even depress accelration and those light came on dashbaord -Forworad smart city brake support malfunction -smart brake system -front camera…”
filed Sep 9, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 01-008/23 06/05/23 Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the…
01-008-26 · Service Bulletin/Repair Instructions · issued May 1, 2026This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance…
SA-029-26 · Service Bulletin/Repair Instructions · issued Apr 21, 2026
Power Train problems in other CX-9 years
| Year | Reports | Share |
|---|---|---|
| 2021 CX-9 | 2 | 6% |
| 2020 CX-9 | 2 | 11% |
| 2019 CX-9 | 4 | 8% |
| 2017 CX-9 | 4 | 7% |
| 2016 CX-9 | 9 | 9% |
| 2015 CX-9 | 3 | 9% |
| 2014 CX-9 | 7 | 13% |
| 2013 CX-9 | 5 | 7% |
| 2012 CX-9 | 18 | 8% |
| 2011 CX-9 | 25 | 15% |
| 2010 CX-9 | 23 | 12% |
| 2009 CX-9 | 6 | 10% |
Other reported problem areas on the 2018 Mazda CX-9
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.