2020 Mazda CX-30 Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 12%of 34 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2020 Mazda CX-30, 12% of the 34 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My car was squeaking and lurching around 3/4 gear. I took it in to the Mazda dealership (Northtowne Mazda in Kansas City) and they told me it was a well-known issue with this year and make of a Mazda. There is a problem with the torque converter lock-up clutch which sheds iron particles into the transmission fluid. The torque converter needs to be replaced. After further research, it appears that Mazda has a well-documented manufacturing defect that is outlined in Mazda TSB 05-005/23. My car has a 60,000 mile/5 year warranty on it. …”
NHTSA complaint #11761957, filed 2026-09“I own 2020 Mazda cx 30 with 66000 miles. The transmission was shifting with jerky motions. On july 14, 2025 I brought the car to palisades Mazda in rockland county new york to have transmission looked at and to change transmission fluid changed. After I dropped the car off later that day I got a call that the transmission was condemned. I looked on the internet with same year make and model and see there is a big problem with the transmissions on these cars and Mazda is aware of the problem. Tsb 05-002/20 is a bulletin about transmission failures in this vehicle. …”
NHTSA complaint #11674592, filed 2025-07Related service bulletins
- 11032003May 1, 2026This 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…
- 11032103Apr 21, 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…
- 11026354Nov 27, 2025When inspected, the differential or PTO oil is dark or black. This is considered normal and NO repair should be performed. During production, differential ring and pinion gears…
- 11026350Nov 8, 2025Noise, Vibration, and Harshness (NVH) Diagnostic Guidelines Diagnostic Guidelines When diagnosing NVH concerns, it is essential to first classify the issue into one of three…
- 11026351Nov 6, 2025Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked. For this concern, inspect the vehicle for any trace of a…
- 11009654Oct 24, 2024The SKYACTIV-DRIVE FW6A-EL AT uses “Automatic Transmission Fluid (ATF) Type: FZ”. Only use “ATF-FZ” to fill or top off the fluid level. ATF-FZ is specially designed for use in…
- 11007010Aug 7, 2024Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked. For this concern, inspect the vehicle for any trace of a…
Transmission and drivetrain: other model years
Other parts of the 2020 Mazda CX-30
9 complaintsBrakes
7 complaintsEngine
6 complaintsElectrical system
5 complaintsFuel system
5 complaintsBody and structure
3 complaintsExterior lighting
2 complaintsForward collision avoidance
2 complaintsSeat belts
2 complaintsSuspension
2 complaintsSteering
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2020 Mazda CX-30
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology