This page covers 6 recalls, 31 owner complaints, NHTSA crash-test ratings and EPA fuel economy for the 2020 Mazda CX-30.
26–27 mpg combined
8.7–9 L/100km
Small Sport Utility Vehicle 4WD
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted. Ranges reflect the 2 tested variants for this model year.
5/5 Overall
NHTSA 5-Star Safety Rating
Electrical complaints lead the 2020 CX-30 owner reports, with several drivers describing intermittent no-start conditions tied to what they characterize as a complete loss of electrical power, sometimes occurring randomly after parking overnight. Structure complaints show up next, with at least one owner reporting that a rear hatch module is no longer available from the manufacturer, leaving the hatch inoperable and without a replacement part. Engine and transmission reports are smaller in volume but include owners describing a rapid oil pressure drop leading to full engine failure, and at least one case where a transmission was deemed unserviceable due to jerky, erratic shifting. A single report also mentions a front camera malfunctioning alongside extended braking distances.
31
Total Complaints
1
Crash-Related
By System
The 2020 Mazda CX-30 has 6 recalls, the most serious involving front brake caliper mounting bolts that can loosen and reduce stopping power or cause a caliper to contact the wheel rim and trigger a loss of vehicle control.
A separate fuel system recall affects all-wheel-drive models only: a hose connecting the evaporative emissions system to the fuel tank may not be seated correctly, allowing liquid fuel to push through the charcoal canister and leak from the rear of the vehicle when the tank is filled to capacity. That leak, near a potential ignition source, raises the risk of fire. The same misfitting hose can also cause the engine to stall while the vehicle is moving.
The remaining recall covers the power liftgate. When the vehicle is parked facing uphill on a slope with the liftgate fully open, it can drop partway down without warning. It does not close completely on its own, but the unexpected movement can strike anyone who is loading or unloading the cargo area at the time.
At a glance
What can fail
The power liftgate may partially lower from fully open when parked uphill on a slope, but won't close completely.
What the fix does
Dealer will update the liftgate software and inspect and replace the liftgate drive units if needed.
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Driver Assistance
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 2 tested variants; worst-case ratings shown.
Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The power liftgate may unexpectedly drop partway closed when the vehicle is parked on an uphill slope, even though it was fully opened.
What the fix does
Dealers will update the liftgate control software and inspect the liftgate drive unit, replacing it if needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The front brake caliper mounting bolts may not be tight enough, causing them to loosen or fall out. This can reduce braking power and allow the caliper to contact the wheel rim, potentially causing loss of vehicle control.
What the fix does
A dealer will check and tighten the front brake caliper mounting bolts to proper specification. Missing bolts and calipers will be replaced.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Front brake caliper mounting bolts may not have been tightened properly during manufacturing, allowing the calipers to potentially loosen.
What the fix does
Dealers will inspect and tighten front brake caliper bolts as needed. Missing bolts result in caliper replacement. All repairs are free.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
On all-wheel drive vehicles, the EVAP hose connected to the fuel tank may be incorrectly installed. When the tank fills completely, fuel can flow into the EVAP system and leak through the charcoal canister vent. A fuel-filled canister may cause engine stalling.
What the fix does
A dealer will inspect and reconnect the EVAP hose inside the fuel tank if needed. If disconnected, the charcoal canister will be replaced.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The evaporative vent hose connected to the fuel tank may be disconnected, allowing fuel to leak from the charcoal canister vent at the rear of the vehicle.
What the fix does
Dealers will inspect the vent hose. If disconnected, they will reconnect it and replace the charcoal canister and related parts at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
