Compare the2024 Mercedes GLBVS 2023 Mazda CX-9

For enhanced safety, the front and second-row seat shoulder belts of the Mercedes GLB have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Mazda CX-9 doesn’t offer pretensioners for its second-row seat belts.

The GLB’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The CX-9 doesn’t offer pre-crash pretensioners.

The Mercedes GLB has a standard driver’s side knee airbag mounted low on the dashboard. The knee airbag helps prevent the driver from sliding under the seatbelts or the main frontal airbag; this keeps the driver better positioned during a collision for maximum protection. A knee airbag also helps keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The CX-9 doesn’t offer knee airbags.

When descending a steep, off-road slope, the GLB’s standard Downhill Speed Regulation allows you to creep down safely. The CX-9 doesn’t offer Downhill Speed Regulation.

Both the GLB and CX-9 have rear cross-traffic warning, but the GLB has Active Brake Assist (automatically applies the brakes) to better prevent a collision when backing near traffic. The CX-9’s Rear Cross Traffic Alert doesn’t automatically brake.

Both the GLB and the CX-9 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, rearview cameras, rear cross-path warning, available all wheel drive, lane departure warning systems and around view monitors.

The GLB comes with a full 4-year/50,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The CX-9’s 3-year/36,000-mile basic warranty expires 1 year or 14,000 miles sooner.

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Mazda vehicles. With 26 fewer problems per 100 vehicles, JD Power ranks Mercedes higher than Mazda.

As tested in Motor Trend the Mercedes GLB is faster than the Mazda CX-9:

	GLB	CX-9
Zero to 60 MPH	6.2 sec	7.5 sec
Quarter Mile	14.8 sec	15.9 sec
Speed in 1/4 Mile	94.1 MPH	87.3 MPH

On the EPA test cycle the GLB gets better mileage than the CX-9:

			MPG
GLB
	FWD	2.0 turbo 4-cyl.	25 city/33 hwy
	AWD	2.0 turbo 4-cyl.	24 city/32 hwy
CX-9
	AWD	2.5 turbo 4-cyl.	20 city/26 hwy

Regenerative brakes improve the GLB’s fuel efficiency by converting inertia back into energy instead of wasting it. The CX-9 doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the GLB’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-9 doesn’t offer an automatic engine start/stop system.

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes GLB higher (6 out of 10) than the Mazda CX-9 (5). This means the GLB produces up to 6.9 pounds less smog-producing pollutants than the CX-9 every 15,000 miles.

An eight-speed automatic (SMG) is standard on the Mercedes GLB, for better acceleration and lower engine speed on the highway. Only a six-speed automatic is available for the CX-9.

The GLB offers a standard 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 CX-9 doesn’t offer an SMG or a conventional manual transmission.

For better stopping power the GLB’s front brake rotors are larger than those on the CX-9:

	GLB	CX-9
Front Rotors	13 inches	12.6 inches

The GLB’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 CX-9 Touring’s standard 60 series tires. The GLB’s optional tires have a lower 45 series profile than the CX-9 Touring Plus/Carbon Edition/Grand Touring/Signature’s 50 series tires.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the GLB can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The CX-9 doesn’t offer run-flat tires.

The GLB 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 or off-road. The CX-9’s suspension doesn’t offer adjustable shock absorbers.

The GLB’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The CX-9 doesn’t offer drift compensation steering.

The GLB 250 4MATIC handles at .83 G’s, while the CX-9 Touring pulls only .79 G’s of cornering force in a Motor Trend skidpad test.

The Mercedes GLB may be more efficient, handle and accelerate better because it weighs about 500 to 750 pounds less than the Mazda CX-9.

The GLB is 1 foot, 5 inches shorter than the CX-9, making the GLB easier to handle, maneuver and park in tight spaces.

The GLB is 5.3 inches narrower than the CX-9, making the GLB easier to handle and maneuver in traffic.

The GLB has 1.4 inches more front headroom, .1 inches more front legroom and .8 inches more rear headroom than the CX-9.

The front step up height for the GLB is 1.3 inches lower than the CX-9 (17” vs. 18.3”). The GLB’s rear step up height is 1.3 inches lower than the CX-9’s (17.5” vs. 18.8”).

A low lift-over cargo hatch design makes loading and unloading the GLB easier. The GLB’s cargo hatch lift-over height is 28.5 inches, while the CX-9’s liftover is 31.7 inches.

A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the GLB. The CX-9 doesn’t offer locking storage for small valuables.

The GLB uses gas struts to support the hood for easier service access. The CX-9 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.

Unlike the driver-only memory seat in the CX-9 Touring Plus/Carbon Edition/Grand Touring/Signature, the GLB has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, suspension setting, power steering assist, outside mirror angle, climate settings and radio stations and the front passenger seat also adjusts to the new passenger’s preset preferences.

The GLB’s standard easy entry and exit feature glides the driver’s seat back, making it easier for the driver to get in and out. The CX-9 doesn’t offer an easy entry system.

The power windows standard on both the GLB and the CX-9 have locks to prevent small children from operating them. When the lock on the GLB is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The CX-9 prevents the driver from operating the other windows just as it does the other passengers.

If the windows are left open on the GLB 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 CX-9 can only close the windows from inside the vehicle, with the ignition on.

The GLB’s standard Keyless-Go allow you to unlock the doors from any outside door handle, open the cargo door, and start the engine, all without removing the key from the pocket or purse. Advanced Keyless Entry and Start standard on the CX-9 doesn’t offer a sensor on the rear doors, so you’ll have to reach a front handle to unlock the rear door.

The GLB’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The CX-9’s power mirror switches are unlit, making them difficult to find at night and operate safely.

Heated windshield washer nozzles are optional on the GLB to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The CX-9 doesn’t offer heated windshield washer nozzles.

When the GLB is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The CX-9’s mirror doesn’t automatically adjust for backing.

The GLB’s standard rear and side view mirrors have an automatic dimming feature. These mirrors can be set to automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The CX-9 has an automatic rear view mirror, but its side mirrors don’t dim.

The GLB offers an optional 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The CX-9 doesn’t offer a house-current electrical outlet.

The GLB’s Active Parking Assist can parallel park by itself, stopping and changing direction automatically. The CX-9 doesn’t offer an automated parking system.

The GLB is available in both front-wheel drive and four-wheel drive configurations. The CX-9 doesn’t offer a two-wheel drive configuration.

Insurance will cost less for the GLB owner. The Complete Car Cost Guide estimates that insurance for the GLB will cost $225 less than the CX-9 over a five-year period.

The GLB will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the GLB will retain 61.32% of its original price after five years, while the CX-9 only retains 47.66% to 48.67%.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Mercedes GLB will be $4192 to $10126 less than for the Mazda CX-9.