Exhaust
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
What Owners Say
"lower arm bushings cracked"
Anonymous, FL (2021 Mazda CX-30 Premium 2.5-L 4 Cyl turbo)
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Reliability
Overall Reliability
The 2021 CX-30 has about average reliability compared to other cars from the same model year.
Most Common Trouble Spots
Common Trouble Spot
Common Trouble Spot
Owner Reported Trouble Spots
The Reliability score is based on our latest subscriber survey of 2021 Mazda CX-30 owners. The owner comments describe problems respondents experienced with this vehicle.
In-car Electronics
Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
What Owners Say
""Basically when I first got the car this problem creeped up six months later. The car was under a warranty because I bought it used. When I hit any kind of bump in the road, the head unit says the USB is not responding so for the rest of my trip I cannot use CarPlay. I have to Bluetooth my music. I went to the dealership to have them try to figure it out. I went back multiple times multiple software updates Car being reset. Basically the warranty expired and they wouldnt replace the head unit or the USB ports to fix the issue. The warranty in order for them to fix it. They have to be able to diagnose the issue and because they cannot figure out what was causing the problem they would not replace it. Of course if I offered Cash, they had no problem because Im paying them to do a job. Its very frustrating because Im still dealing with this issue today and now I dont even use CarPlay with this car because I cant trust it to charge my phone or work correctly. The only thing their tech could figure out is its a compatibility issue telling me that the car was designed for lightning cords. I have a iPhone 15 pro. So has USB-C and theyre saying that its causing a problem. My girlfriend has a iPhone 14 so we tried with her phone that they recommended and it still has the same problem. I even talked to Mazda Corporate down in Los Angeles they pretty much did not care to help after playing phone tag with my case manager for two weeks. I might get a Mazda in the future, but at least not this one that I have. Maybe I should just stick to Honda or Toyota. When I still have the warranty, I kept asking them can you just replace the head unit or the USB ports and that would fix the issue. If it did not fix the issue, then there were clearly be something else going on. And I kept arguing with them if its a compatibility issue. Why would it randomly disconnect like that? I tried with my brothers pixel phone. I even bought a brand new official Apple cable just to make sure I wasnt having some weird problem with the cables. Try like six different brands. It is very frustrating that Im just left holding the bag and it never got fixed.""
Anonymous A., CA (2021 Mazda CX-30 Select 2.5-L 4 Cyl)"The infotainment system is problematic. Lack of touch screen and clunky controls"
Anonymous, MD (2021 Mazda CX-30 Select 2.5-L 4 Cyl)Climate System
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
What Owners Say
"The system once it comes to heat blows cool air on the floor. This is not the design on the system it should blow cool air out the front air vents according to the manual. In the winter it makes it very hard to drive any distance. If you take the system off the 'auto' mode then you can force warmer air to the floor but even the it isn't perfect"
Anonymous, AB (2021 Mazda CX-30 Premium 2.5-L 4 Cyl)"This is connect to the heating system and auto function - cool air blows on the floor when it shouldn't"
Anonymous, AB (2021 Mazda CX-30 Premium 2.5-L 4 Cyl)Drive System
Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
What Owners Say
"I was hearing a clunking noise coming from the rear that progressed to the point of being alarming. Rear differential had gone out and required replacement under drivetrain warranty."
Anonymous A., WA (2021 Mazda CX-30 Turbo 2.5-L 4 Cyl turbo)""Due to failed CV joint on the front axle the whole axle had to be replaced by the dealership. At first it was misdiagnosed and I replaced wrong side axle due to misdiagnosed side. I paid for repair and part replacement but after the fact it did not fix the problem I came back to the dealership and they replaced the other side which was making noise. I got full reimbursement of the cost of the first axle replacement and diagnostic fee. This did not cost me anything in the end but it's just disappointing that the car under 36,000 mi had such an issue.""
Anonymous, PA (2021 Mazda CX-30 Preferred 2.5-L 4 Cyl)Suspension/Steering
Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.
What Owners Say
"In several months after birth just saying the new car we experienced some noises during turning and that was diagnosed by the dealership as defective strut mounds which were replaced and problem was solved and it was covered by warranty."
Anonymous, PA (2021 Mazda CX-30 Preferred 2.5-L 4 Cyl)"Annoying squeaky noise emanating from front strut or shock tower when braking. Problem worsened with hot weather. Dealer said it was probably the sunroof cover. Not even close. Another issue not easy to fix. I can see other owners in the US and Canada discussing it online. Definitely coming from under the vehicle not the interior or sunroof. Lousy service director at dealership. Issues unresolved. Selling car. No more Mazdas. They wont fix what they know is wrong."
Anonymous, IL (2021 Mazda CX-30 Turbo 2.5-L 4 Cyl turbo)Engine Major
Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
What Owners Say
"Car has faulty valve seal issue causing excessive oil consumption. At first oil change I mentioned to the service director that the car was using a lot of oil. I had to add three quarts in the first 6000 miles. He said it was because I wasnt changing the oil frequently enough even though the owners manual recommended every 10000 miles for the turbo model with synthetic oil. Turns out there was a class action law suit filed because of the problem and dealers would only replace the faulty seals if the car showed excessive oil use after that was proven b6 them changing the oil and waiting for a few months even though I informed them of the problem and there were apparently thousands of other cars with the same problem. No recall or tsb. The last Mazda I will ever buy."
Anonymous, IL (2021 Mazda CX-30 Turbo 2.5-L 4 Cyl turbo)Paint/Trim
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
Transmission Minor
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
Body Hardware
Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.
Noises/Leaks
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
Engine Cooling
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Engine Electrical
Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.
Brakes
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
Electrical Accessories
Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.
Engine Minor
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Fuel System/Emissions
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
Transmission Major
Transmission rebuild or replacement, torque converter, premature clutch replacement.
2021 SUVs Reliability
This Car
0
100
Mazda vs. Other New Car Brands Reliability
Overall Reliability Verdict
POTENTIAL TROUBLE SPOTS
Reliability indicates how models have performed in the past, providing the basis for predicting
how the vehicles will hold up in the year ahead. These charts provide the most comprehensive reliability
information available to consumers. Based on information received from our latest subscriber survey for
about 380,000 vehicles, our reliability history charts give
you a rundown on how 2000 through 2025 vehicles are holding up in 20 potential
trouble spots, ranging from the engine, transmission, electric motor, EV charging, and brakes,
to power equipment and the electrical accessories.
Recalls
PROVIDED BY
TIRES
Feb 22, 2021
A sudden air leak from the tire air valve may cause a loss of vehicle control while driving, increasing the risk of a crash.
Summary:
Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.
What should you do:
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. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 4721B.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
NHTSA CAMPAIGN ID Number:
21V101000
Potential Number of Units Affected:
599
STRUCTURE
Feb 18, 2021
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.
Summary:
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.
What should you do:
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.
For more information:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
NHTSA CAMPAIGN ID Number:
21V086000
Potential Number of Units Affected:
13857
Check Vehicle for Unrepaired Recalls
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"I had a problem with the dash cam that drained the car battery. I had to disconnect the dash cam when the car is parked."
Anonymous, BC (2021 Mazda CX-30 Turbo 2.5-L 4 Cyl turbo)