Compare the2023 MINI Cooper Hardtop 4 Door VS 2023 Mazda 3

The Cooper Hardtop 4 Door has a standard PostCrash iBrake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Mazda 3 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

Both the Cooper Hardtop 4 Door and the Mazda 3 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, 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 and available front parking sensors.

The Cooper Hardtop 4 Door comes with a full 4-year/50,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The 3’s 3-year/36,000-mile basic warranty expires 1 year or 14,000 miles sooner.

The Cooper Hardtop 4 Door’s corrosion warranty is 7 years longer than the Mazda 3’s (12 vs. 5 years).

MINI pays for scheduled maintenance on the Cooper Hardtop 4 Door for 3 years and 36,000 miles. MINI will pay for oil changes, lubrication and any other required maintenance. Mazda doesn’t pay scheduled maintenance for the 3.

To reliably power the ignition and other systems and to recharge the battery, the Cooper Hardtop 4 Door has a 150-amp alternator. The Mazda 3’s standard 100-amp alternator isn’t as powerful.

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the Cooper Hardtop 4 Door’s reliability 31 points higher than the Mazda 3.

J.D. Power and Associates’ 2022 Initial Quality Study of new car owners surveyed provide the statistics that show that MINI vehicles are better in initial quality than Mazda vehicles. J.D. Power ranks MINI above average in initial quality. With 12 more problems per 100 vehicles, Mazda is rated lower.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that MINI vehicles are more reliable than Mazda vehicles. J.D. Power ranks MINI above average in long-term dependability. With 19 more problems per 100 vehicles in the first three years of ownership, Mazda is rated lower.

The Cooper Hardtop 4 Door S’ standard 2.0 turbo 4-cylinder produces 20 lbs.-ft. more torque (206 vs. 186) than the Mazda 3’s standard 2.5 DOHC 4-cylinder.

On the EPA test cycle the Cooper Hardtop 4 Door gets better mileage than the Mazda 3 Sedan:

			MPG
Cooper Hardtop 4 Door
FWD	Auto	1.5 turbo 3-cyl.	29 city/38 hwy
		2.0 turbo 4-cyl.	28 city/38 hwy
Mazda 3 Sedan
FWD	Auto	2.5 DOHC 4-cyl.	28 city/37 hwy
AWD	Auto	2.5 DOHC 4-cyl.	26 city/35 hwy
		2.5 turbo 4-cyl.	23 city/31 hwy

On the EPA test cycle the Cooper Hardtop 4 Door gets better mileage than the Mazda 3 Hatchback:

			MPG
Cooper Hardtop 4 Door
FWD	Manual	1.5 turbo 3-cyl.	27 city/37 hwy
	Auto	1.5 turbo 3-cyl.	29 city/38 hwy
		2.0 turbo 4-cyl.	28 city/38 hwy
Mazda 3 Hatchback
FWD	Manual	2.5 DOHC 4-cyl.	26 city/36 hwy
	Auto	2.5 DOHC 4-cyl.	26 city/36 hwy
AWD	Auto	2.5 DOHC 4-cyl.	26 city/33 hwy
		2.5 turbo 4-cyl.	23 city/31 hwy

Regenerative brakes improve the Cooper Hardtop 4 Door’s fuel efficiency by converting inertia back into energy instead of wasting it. The Mazda 3 doesn’t offer a regenerative braking system.

A seven-speed automatic (SMG) is available on the MINI Cooper Hardtop 4 Door, for better acceleration and lower engine speed on the highway. Only a six-speed automatic is available for the Mazda 3.

The Cooper Hardtop 4 Door offers an optional sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The Mazda 3 doesn’t offer an SMG.

To help the driver achieve optimum performance and fuel economy, the Cooper Hardtop 4 Door has a standard up-shift light to indicate when to shift based on power needs and conditions. The Mazda 3 doesn’t offer an up-shift light.

The Cooper Hardtop 4 Door S Auto’s optional launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The Mazda 3 doesn’t offer launch control.

For better stopping power the Cooper Hardtop 4 Door S’ front brake rotors are larger than those on the Mazda 3:

	Cooper Hardtop 4 Door	Cooper Hardtop 4 Door S	Mazda 3	Mazda 3 AWD
Front Rotors	11.1 inches	12.1 inches	11.02 inches	11.61 inches

The Cooper Hardtop 4 Door’s standard tires provide better handling because they have a lower 55 series profile (height to width ratio) that provides a stiffer sidewall than the Mazda 3 2.5 S’ standard 60 series tires. The Cooper Hardtop 4 Door’s optional tires have a lower 40 series profile than the Mazda 3 Hatchback/Select/Preferred/Premium/Turbo’s 45 series tires.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the Cooper Hardtop 4 Door can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Mazda 3 doesn’t offer run-flat tires.

For superior ride and handling, the MINI Cooper Hardtop 4 Door has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Mazda 3 has a rear torsion beam axle, with a semi-independent rear suspension.

The Cooper Hardtop 4 Door has standard front and rear stabilizer bars, which help keep the Cooper Hardtop 4 Door flat and controlled during cornering. The Mazda 3’s suspension doesn’t offer a rear stabilizer bar.

The Cooper Hardtop 4 Door offers an optional driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The Mazda 3’s suspension doesn’t offer adjustable shock absorbers.

The Cooper Hardtop 4 Door has vehicle speed sensitive variable-assist power steering, for low-effort parking, better control at highway speeds and during hard cornering, and a better feel of the road. The Mazda 3 doesn’t offer variable-assist power steering.

The MINI Cooper Hardtop 4 Door may be more efficient, handle and accelerate better because it weighs about 250 to 450 pounds less than the Mazda 3.

The Cooper Hardtop 4 Door is 1 foot, 5.1 inches shorter than the Mazda 3 Sedan, making the Cooper Hardtop 4 Door easier to handle, maneuver and park in tight spaces.

The front grille of the Cooper Hardtop 4 Door uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Mazda 3 doesn’t offer active grille shutters.

The Cooper Hardtop 4 Door has 1.9 inches more front headroom and .2 inches more rear headroom than the Mazda 3 Sedan.

To allow full utilization of available cargo room, the Cooper Hardtop 4 Door’s hatch uses gas strut supported hinges that don’t intrude into the cargo area. Its intrusive beam hinge reduces the Mazda 3’s useful trunk space (except wagon).

The Cooper Hardtop 4 Door uses gas struts to support the hood for easier service access. The Mazda 3 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.

J.D. Power and Associates surveys of service recipients show that MINI service is better than Mazda. J.D. Power ranks MINI fourth in service department satisfaction. With a 17% lower rating, Mazda is ranked 11th.

The power windows standard on both the Cooper Hardtop 4 Door and the Mazda 3 have locks to prevent small children from operating them. When the lock on the Cooper Hardtop 4 Door is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Mazda 3 prevents the driver from operating the other windows just as it does the other passengers.

If the windows are left open on the Cooper Hardtop 4 Door the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Mazda 3 can only close the windows from inside the vehicle, with the ignition on.

Heated windshield washer nozzles are standard on the Cooper Hardtop 4 Door to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The Mazda 3 doesn’t offer heated windshield washer nozzles.

To better shield the driver’s vision, the Cooper Hardtop 4 Door has a standard dual-element sun visor that can block glare from two directions simultaneously. The Mazda 3 doesn’t offer a secondary sun visor.

The Cooper Hardtop 4 Door’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Mazda only offers heated mirrors on the Mazda 3 Carbon/Turbo.

The Cooper Hardtop 4 Door Iconic’s Parking Assistant can parallel park by itself, with the driver only controlling speed with the brake pedal. The Mazda 3 doesn’t offer an automated parking system.

The MINI Cooper comes in coupe, convertible and four door hatchback bodystyles; the Mazda 3 isn’t available as a coupe or convertible.

Insurance will cost less for the Cooper Hardtop 4 Door owner. The Car Book by Jack Gillis rates the Cooper Hardtop 4 Door with a number “5” insurance rate while the Mazda 3 is rated higher at a number “8” rate.

According to The Car Book by Jack Gillis, the Cooper Hardtop 4 Door is less expensive to operate than the Mazda 3 because typical repairs cost less on the Cooper Hardtop 4 Door than the Mazda 3, including $77 less for fuel injection.

Consumer Reports® recommends both the MINI Cooper Hardtop 4 Door and the Mazda 3, based on reliability, safety and performance.

J.D. Power and Associates rated the Cooper Hardtop 4 Door first among compact sporty cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The Mazda 3 isn’t in the top three.