2021 Mazda CX-30: Recalls, Problems & MPG
Here are the deets on the 2021 Mazda CX-30: 2 recalls, 101 owner complaints and up to 28 mpg combined.
Recalls
2 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Body & structure Vehicle recall #21V086000 · 2021 · 13,857 vehicles
What's wrong: When fully opened, the power liftgate May partially lower unexpectedly when the vehicle is parked facing uphill on a slope.
Why it matters: If the power liftgate unexpectedly lowers while a person is accessing the rear storage area of the vehicle, it can increase their risk of injury.
The fix: Mazda will notify owners, and dealers will update the power liftgate control module software and inspect the serial number of the power liftgate drive unit, replacing it if necessary, free of charge. The recall began April 8, 2021.
Tires Vehicle recall #21V101000 · 2021 · 599 vehicles
What's wrong: Air May suddenly leak from the tire air valve.
Why it matters: A sudden air leak from the tire air valve May cause a loss of vehicle control while driving, increasing the risk of a crash.
The fix: Mazda will notify owners, and dealers will replace all four tire air valves with new parts, free of charge. The recall began April 6, 2021.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 13 injuries and 0 deaths were reported.
What owners describe
- Engine (49): the most common themes are warning light on (19), excess oil use (10), leaks (9).
- Electrical (14): the most common themes are electrical failure (7), warning light on (3), stalls / loses power (3).
- Forward collision avoidance (12): the most common themes are stalls / loses power (2), warning light on (2).
- Other / unknown (10): the most common themes are stalls / loses power (2), warning light on (2).
The 2021 Mazda CX-30 has 101 owner complaints, ranking #1 of 7 CX-30 model years for complaints (2.8× the average CX-30 year). Complaints peaked in 2022 (37 filed that year). The typical problem showed up when the car was about 2 years old, at a median of 5,078 miles. Neighboring years: 2020 (34 complaints, 3 recalls), 2022 (33 complaints, 1 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 2.5 L 4-cyl | Automatic (S6) | Front-Wheel Drive | 25 | 33 | 28 | Regular |
| 2.5 L 4-cyl | Automatic (S6) | 4-Wheel Drive | 24 | 31 | 26 | Regular |
| 2.5 L 4-cyl turbo | Automatic (S6) | 4-Wheel Drive | 22 | 30 | 25 | Regular |
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2021 Mazda CX-30.
Closest thing to the factory manual for most years. Pay once, keep it.
Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
From $19.99/mo · $39.99/yrOEM procedures, specs and recall/TSB info, the same source many shops use.
From $19.99/mo · $59.99/yrStep-by-step photos written from a real teardown. Great for first-timers.
Books ~$30–$40 · AllAccess $34.99/moHeads up: we may earn a commission if you buy through these links, at no extra cost to you. Prices checked 2026-10 and can change. We never host or link to pirated manuals. Disclosure
FAQ
Does the 2021 Mazda CX-30 have any recalls?
Yes. NHTSA lists 2 vehicle recalls for the 2021 Mazda CX-30. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2021 Mazda CX-30 problems?
Owners have filed 101 complaints with NHTSA. The most-reported areas are engine (49), electrical (14), forward collision avoidance (12).
What gas mileage does the 2021 Mazda CX-30 get?
EPA ratings run up to 28 mpg combined (2.5 L, Automatic (S6)), across 3 engine and transmission combos.
Where can I get a 2021 Mazda CX-30 repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.