2020 Mazda CX-30 recalls, problems & safety ratings
NHTSA lists 3 recalls for the 2020 Mazda CX-30 and 34 owner complaints. The most-reported problem areas are unknown or other (9), service brakes (7), engine (6). It earned a 5-star overall NHTSA safety rating. EPA-rated fuel economy is 26–28 mpg combined, depending on configuration.
The 2020 ranks #6 of 7 CX-30 model years for fewest complaints (2020–2026), with fewer complaints than the average year (37). It has 3 recalls vs. an average of 1.4 per model year.
Recalls 3
Every recall NHTSA lists for the 2020 Mazda CX-30. Not every recall applies to every vehicle, so check your VIN. Recall repairs are free at a franchised dealer.
Structure · body · hatchback/liftgate
Problem: Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-30 vehicles. When fully opened, the power liftgate may partially lower unexpectedly when the vehicle is parked facing uphill on a slope.
Risk: 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.
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. Owners may contact Mazda customer service at 1-800-222-5500 option 4. Mazda's number for this recall is 4621B.
Service brakes, hydraulic · foundation components · disc · caliper
Problem: Mazda North American Operations (Mazda) is recalling certain 2020 CX-30 and Mazda3 vehicles. The front brake caliper mounting bolts may not have been tightened properly during assembly, possibly allowing the calipers to loosen.
Risk: Loose brake calipers can reduce braking performance or interfere with wheel rotation, affecting vehicle handling. Either of these scenarios can increase the risk of a crash.
Fix: Mazda will notify owners, and dealers will inspect the front brake caliper bolts, tightening them as necessary. If bolts are missing, the affected brake caliper will be replaced. Repairs will be performed free of charge. The recall began July 24, 2020. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4420F.
Fuel system, gasoline · delivery · hoses, lines/piping, and fittings
Problem: Mazda North American Operations (Mazda) is recalling certain 2020 CX-30 vehicles equipped with all-wheel drive. The evaporative vent hose for the fuel tank may be disconnected, possibly allowing fuel to leak from the charcoal canister vent at the rear of the vehicle.
Risk: A fuel leak in the presence of an ignition source may increase the risk of a fire. Additionally, the engine may stall while driving, increasing the risk of a crash.
Fix: Mazda will notify owners, and dealers will inspect the evaporative vent hose in the fuel tank. If the hose is disconnected, it will be reconnected and the charcoal canister with some related parts will be replaced. Repairs will be performed free of charge. The recall began July 29, 2020. Owners may contact Mazda customer service at 1-800-222-5500, Option 4. Mazda's number for this recall is 4520F.
Common problems
From complaints owners filed with NHTSA. Complaints aren't verified, but patterns across hundreds of owners point to known weak spots.
Most-reported problem areas
By the numbers
Recent owner reports
Multiple fixes and repairs on a P0421 code. Repaired by Mazda with a new catalytic converter but then refused to replace it when the code came back saying it was not covered by the warranty. Mazda says it is not a common issue but they have had issues in the past with the same P0421 code repeatedly showing up on a healthy car.
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 rese…
The front passenger side headlight is making a whirring noise whenever the light is turned on. Based on the NHTSA safety reports for this model, this indicates the fan is failing, and soon the headlight will also fail. Intact headlights are essential for driving safety at night. No warning messages have appeared on the car.
Safety ratings
2020 Mazda CX-30 SUV AWD
2020 Mazda CX-30 SUV FWD
Fuel economy
EPA ratings for common configurations of the 2020 Mazda CX-30.
CX-30 2WD
Auto (S6) · 4 cyl · 2.5 L · SIDI
Regular
CX-30 2WD
Auto (S6) · 4 cyl · 2.5 L · SIDI; With Cylinder Deactivation
Regular
CX-30 4WD
Auto (S6) · 4 cyl · 2.5 L · SIDI
Regular
CX-30 4WD
Auto (S6) · 4 cyl · 2.5 L · SIDI; With Cylinder Deactivation
Regular
Other model years
Questions
How many recalls does the 2020 Mazda CX-30 have?
NHTSA lists 3 recalls for the 2020 Mazda CX-30, most recently for structure · body · hatchback/liftgate (02/18/2021). Recall repairs are free at a franchised dealer. Enter your VIN to check whether a recall applies to your vehicle.
What are the most common problems with the 2020 Mazda CX-30?
Based on 34 owner complaints filed with NHTSA, the most-reported areas are unknown or other (9), service brakes (7), engine (6).
Is the 2020 Mazda CX-30 safe?
The 2020 Mazda CX-30 earned a 5-star overall rating in NHTSA's 5-star safety ratings.
Is the 2020 a good year for the Mazda CX-30?
The 2020 ranks #6 of 7 CX-30 model years for fewest complaints (2020–2026), with fewer complaints than the average year (37). It has 3 recalls vs. an average of 1.4 per model year.
What gas mileage does the 2020 Mazda CX-30 get?
EPA ratings for the 2020 Mazda CX-30 range from 26 to 28 mpg combined, depending on configuration.
Own a 2020 Mazda CX-30 in South Carolina?
Our mobile mechanics diagnose and fix the problems above at your home, office or fleet lot in Lexington, Columbia and the Midlands, with dealer-grade scan tools.
Related vehicles
Sources: NHTSA recalls, complaints and 5-Star Safety Ratings APIs; EPA fueleconomy.gov. Data retrieved November 2, 2026. NHTSA model names used: CX-30.