Problems · NHTSA complaints

2018 Mazda CX-3 problems

Owners filed 10 complaints about the 2018 Mazda CX-3 with NHTSA between Aug 2018 and May 2026. The most-cited component is engine (2).

Complaints
10
Filed with NHTSA
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Engine2
  2. Back over prevention2
  3. Electrical system2
  4. Fuel/propulsion system1
  5. Exterior lighting1
  6. Suspension1
  7. Service brakes1
  8. Forward collision avoidance1
  9. Lane departure1
  10. Wheels1
  11. Vehicle speed control1
  12. Other / unknown1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 11, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20182
20191
20200
20212
20220
20232
20242
20250
20261

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Engine

2 reports
“Fuel injector failed without warning. A lot of fuel leaked into the engine destroying a spark plug in one cylinder and ultimately ruining the catalytic converter when fuel got into it. Independent mechanic and Mazda dealership diagnosed. Car cannot be driven.”
Owner complaint to NHTSAFiled May 8, 2026Engine, Fuel/propulsion systemODI 11736705

Back over prevention

2 reports1 related recall
“The contact owns a 2018 Mazda CX-3. The contact received notification of NHTSA Campaign Number: 23V487000 (Back Over Prevention) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.”
Owner complaint to NHTSAFiled Dec 10, 2024Back over preventionODI 11629810

Electrical system

2 reports
“TL* THE CONTACT OWNS A 2018 MAZDA CX-3. THE CONTACT STATED WHILE DRIVING 52 MPH, THE BLIND SPOT DETECTION WARNING INDICATOR WAS NOT WORKING. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO OLYMPIA MAZDA (2201 CARRIAGE SOUTHWEST OLYMPIA, WA 98502) WHERE THE FAILURE WAS DIAGNOSED AS A BLIND SPOT MONITORING SYSTEM FAILURE. THE CONTACT STATED THAT THE VEHICLE WAS REPAIRED UNDER MANUFACTURER COMMUNICATIONS NUMBER: TSB:15-004-18-3539. THE CONTACT WAS UPSET THAT THE TSB WAS NOT A RECALL. THE MANUFACTURE WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 22,440.”
Owner complaint to NHTSAFiled Feb 24, 2021Electrical system, Lane departureODI 11397728

Fuel/propulsion system

1 report

Exterior lighting

1 report
“Heavy condensation is occurring inside the driver side headlamp. A quick google search shows this is a common problem among Mazda owners and Mazda will not cover the repair. I am unable to get a Massachusetts state inspection sticker due to this.”
Owner complaint to NHTSAFiled Mar 16, 2024Exterior lightingODI 11577723

Suspension

1 report
“The contact owns a 2018 Mazda CX-3. The contact stated that while driving, the vehicle was moving from left to right. The contact stated that the brakes were making an abnormal scraping sound. There was an abnormal sound coming from the engine. The local dealer was not contacted. There were no warning lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was unknown.”
Owner complaint to NHTSAFiled Jan 31, 2023Suspension, Engine, Service brakesODI 11504763
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 11, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.