Compare the2025 Kia SoulVS 2025 Mazda CX-30

Both the Soul and the CX-30 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras, driver alert monitors, available blind spot warning systems and rear cross-path warning.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Kia Soul is safer than the Mazda CX-30:

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

The Soul comes with a full 5-year/60,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The CX-30’s 3-year/36,000-mile basic warranty expires 2 years or 24,000 miles sooner.

Kia’s powertrain warranty covers the Soul 5 years and 40,000 miles longer than Mazda covers the CX-30. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the CX-30 ends after only 5 years or 60,000 miles.

There are over 45 percent more Kia dealers than there are Mazda dealers, which makes it easier should you ever need service under the Soul’s warranty.

To reliably power the ignition and other systems and to recharge the battery, the Soul has a 150-amp alternator. The CX-30’s standard 100-amp alternator isn’t as powerful.

J.D. Power and Associates rated the Soul third among small suvs in their 2024 Initial Quality Study. The CX-30 isn’t in the top three in its category.

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that Kia vehicles are better in initial quality than Mazda vehicles. J.D. Power ranks Kia fourth in initial quality, above the industry average. With 69 more problems per 100 vehicles, Mazda is ranked 29th, below the industry average.

As tested in Motor Trend the Kia Soul is faster than the Mazda CX-30 4 cyl.:

On the EPA test cycle the Soul gets better mileage than the CX-30:

In heavy traffic or at stoplights the Soul’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. If the conditions warrant or the driver wishes, the system can be manually disabled at any time for the duration of a trip. The CX-30 doesn’t offer an automatic engine start/stop system.

To lower fuel costs and make buying fuel easier, the Kia Soul uses regular unleaded gasoline. The CX-30 with the 2.5 turbo 4-cylinder engine requires premium for maximum efficiency, which can cost on average about 84.9 cents more per gallon.

The Soul has 1.6 gallons more fuel capacity than the CX-30 (14.3 vs. 12.7 gallons), for longer range between fill-ups.

The Soul has a standard continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The CX-30 doesn’t offer a CVT.

The Soul stops much shorter than the CX-30:

For better traction, the Soul GT-Line’s tires are larger than the largest tires available on the CX-30 (235/45R18 vs. 215/65R16).

The Soul LX/S’ standard tires provide better handling because they have a lower 60 series profile (height to width ratio) that provides a stiffer sidewall than the CX-30 2.5 S’ standard 65 series tires. The Soul GT-Line’s tires have a lower 45 series profile than the CX-30 Select/Preferred/Carbon/Premium’s 55 series tires.

The Soul has standard front and rear gas-charged shocks for better control over choppy roads. The CX-30’s suspension doesn’t offer gas-charged shocks.

The Soul handles at .91 G’s, while the CX-30 2.5 S Premium pulls only .84 G’s of cornering force in a Car and Driver skidpad test.

The Soul executes Motor Trend’s “Figure Eight” maneuver 1.1 seconds quicker than the CX-30 2.5 S Premium (26.8 seconds @ .66 average G’s vs. 27.9 seconds @ .6 average G’s).

The Kia Soul may be more efficient, handle and accelerate better because it weighs about 550 pounds less than the Mazda CX-30.

The Soul is 7.8 inches shorter than the CX-30, making the Soul easier to handle, maneuver and park in tight spaces.

The Soul has 8.1 cubic feet more passenger volume than the CX-30 (102.2 vs. 94.1).

The Soul has 1.8 inches more front headroom, 1.2 inches more rear headroom, 2.5 inches more rear legroom and 1.1 inches more rear shoulder room than the CX-30.

The Soul has a much larger cargo volume with its rear seat up than the CX-30 with its rear seat up (24.2 vs. 20.2 cubic feet). The Soul has a much larger cargo volume with its rear seat folded than the CX-30 with its rear seat folded (62.1 vs. 45.2 cubic feet).

The Soul uses gas struts to support the hood for easier service access. The CX-30 uses a prop rod to support its heavy hood. It takes two hands to open the hood and set the prop rod, the prop rod gets in the way during maintenance and service, and the prop rod could be knocked out, causing the heavy hood to fall on the person maintaining or servicing the car.

The power windows standard on both the Soul and the CX-30 have locks to prevent small children from operating them. When the lock on the Soul is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The CX-30 prevents the driver from operating the other windows just as it does the other passengers.

To improve rear visibility by keeping the rear window clear, the Soul has a standard rear fixed intermittent wiper with a full on position. The rear wiper standard on the CX-30 only has an intermittent setting, so in a hard rain visibility isn’t as good.

The Soul will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the Soul will retain 56.97% to 60.23% of its original price after five years, while the CX-30 only retains 54.31% to 55.58%.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Kia Soul will be $3258 to $11106 less than for the Mazda CX-30.

Consumer Reports® recommends both the Kia Soul and the Mazda CX-30, based on reliability, safety and performance.