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Mazda CX-30
2021 · gas, suv
7 measured figures
7 of the 9 figures this market publishes for a car like this one are measured for this car. This market publishes no overall score, so there is no share of a composite weight to measure confidence against; figures_measured says how many of this market's figures the row carries, and contributing_publishers says who measured them

Measured figures

Fuel economy28 mpg (US gallons)Measured by EPA · configuration: CX-30 2WD
Tailpipe CO₂194 g/kmMeasured by EPA · CO₂ basis: tailpipe_rated · configuration: CX-30 2WD · also 313 g/mile
HorsepowerFree with an accountMeasured for this car, with its publisher and basis
WarrantyFree with an accountMeasured for this car, with its publisher and basis
Recall campaignsFree with an accountMeasured for this car, with its publisher and basis
NHTSA overall ratingFree with an accountMeasured for this car, with its publisher and basis
Complaints per 10,000 builtFree with an accountMeasured for this car, with its publisher and basis

5 more measured figures for this car — Horsepower, Warranty, Recall campaigns, NHTSA overall rating, Complaints per 10,000 built — each with the publisher that measured it and the basis it is on. Free to read with an account.

Figures this car does not carry

Fuel economy (MPGe)Not published for this carFuel economy (MPGe) is published for electric and hydrogen cars, whose economy is published as MPGe: energy converted at 33.7 kWh per gallon, not fuel burned; this car is not one of them, so the figure is not the same quantity for it
Tailpipe CO₂ (charge-weighted)Not published for this carthis car's CO₂ is published as the tailpipe rating for the car driven as rated on the test cycle (194 g/km), not as a composite weighted across electric and fuel-burning miles, so it is not the quantity this list orders. It is published as Tailpipe CO₂
Engine horsepowerNot published for this carNot published for this car. The record's own reason is free to read with an account.
Kerb weightNot published for this carNot published for this car. The record's own reason is free to read with an account.
EPA test weightNot published for this carNot published for this car. The record's own reason is free to read with an account.
PriceNot published for this carNot published for this car. The record's own reason is free to read with an account.

5-Year Running Costs

Fuel$10,643
Insurance$9,540 (modelled)
Maintenance$5,200 (class estimate)
Repairs$8,000 (modelled)
Depreciationnot estimated — we hold no purchase price for this car, and it is not assumed.
Totalnot estimated — a component above is unknown or modelled

Running costs only — the purchase price is not included. The five-year running cost is an ESTIMATE, not a measurement of this car: only its fuel half is computed from the car's own measured consumption and a dated pump price (see fuel_price_source and fuel_price_as_of in the market's own figures); insurance, maintenance and repairs are class models. It orders no list and is not one of this market's published figures. Fuel is this car's own combined consumption over 13,800 miles a year at $4.319 a US gallon of petrol (U.S. Energy Information Administration, Gasoline and Diesel Fuel Update: U.S. regular gasoline retail price, all formulations, weekly, 2026-09-14). Insurance, maintenance and repairs are models, not figures for this car: insurance from its power, weight and crash rating, maintenance from its make's class, repairs from its complaint and recall counts. They are shown for scale and are not used to rank it. Confidence is low: several components are modelled from class averages.

Known Issues

ENGINE
49 complaint(s)
The contact leased a 2021 Mazda CX-30. The contact stated that the vehicle had failed to start up after multiple attempts with several unknown warning lights illuminated on the instrument panel. The c…
ELECTRICAL SYSTEM
13 complaint(s)
TL* THE CONTACT OWNS A 2021 MAZDA CX-30. THE CONTACT STATED WHILE DRIVING 3 MPH, THE VEHICLE LOSS MOTIVE POWER. THE CONTACT STATED THAT THE LOW VOLTAGE 12-V CHARGE WARNING LIGHT WAS ILLUMINATED. THE C…
UNKNOWN OR OTHER
10 complaint(s)
The brand new vehicle was sold to me on 2/23/21 with an open safety recall. This recall was finally addressed on 5/21/21. At no time did Mazda north American operations formally notifying me of the sa…
VISIBILITY/WIPER
9 complaint(s)
Manufacturing defect in the windshield glass: distorted/warped windshield glass causing waves/ripples. Result: impaired visibility when operating vehicle and rapid eye fatigue. Google search (forums)…
POWER TRAIN
8 complaint(s)
VEHICLE SPEED CONTROL
7 complaint(s) · 2 report a crash, fire, injury or death
The contact owns a 2021 Mazda CX-30. The contact stated that while driving at an undisclosed speed, the accelerator pedal was slightly depressed; however, the vehicle speed increased significantly ind…
SERVICE BRAKES
6 complaint(s) · 3 report a crash, fire, injury or death
Rear brakes became extremely worn very quickly. Had to replace in September of 2023 and purchased the car with 0 miles in February of 2022.
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
5 complaint(s) · 2 report a crash, fire, injury or death
AFTER TURNING LEFT AT A SIGNALED INTERSECTION ONTO A HIGHWAY THE AUTOMATIC BRAKING ENGAGED AND THE CAR SKIDDED TO A STOP IN THE MIDDLE OF THE LANE. LUCKILY NOBODY WAS BEHIND US. THERE WAS A CAR ABOUT…
FORWARD COLLISION AVOIDANCE: WARNINGS
4 complaint(s) · 2 report a crash, fire, injury or death
AIR BAGS
3 complaint(s) · 2 report a crash, fire, injury or death
The contact owned a 2021 Mazda CX30. The contact stated while making a left turn, another vehicle struck the middle of her vehicle causing server damage. The contact stated that none of the frontal ai…

The 10 components named in the most complaints are shown, of 28 named in all.

These complaints are filed under CX-30, a name NHTSA also uses for other versions of this car, so some may concern those versions.

Data sources