Compare the2025 GMC AcadiaVS 2025 Mercedes GLB

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the Acadia are reminded to check the back seat if they opened the rear door before starting out. The GLB doesn’t offer a back seat reminder.

The Acadia has a standard front seat center airbag, which deploys between the driver and front passenger, protecting them from injuries caused by striking each other in serious side impacts. The GLB doesn’t offer front seat center airbags.

In a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the GMC Acadia achieved a “Good” rating - the highest possible - for its performance in forward collision warning and automatic braking systems, demonstrating its excellent capabilities in preventing collisions. The Mercedes GLB has not been tested.

Over 200 people are killed each year when backed over by motor vehicles. The Acadia has standard Reverse Automatic Braking that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The GLB doesn’t offer automatic braking for stationary objects directly to the rear.

The Acadia’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. A lane departure warning system costs extra on the GLB.

The GMC Acadia’s rear backup camera has a standard washer for maintaining a clear view under various conditions. In contrast, the Mercedes GLB does not offer a rear camera washer, meaning its effectiveness relies on manual cleaning by the user when necessary.

Both the Acadia and the GLB have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, front wheel drive, 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, front parking sensors and driver alert monitors.

The GMC Acadia weighs 611 to 1058 pounds more than the Mercedes GLB. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

The GMC Acadia achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2025 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated moderate overlap front crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The GLB has not yet been evaluated by the IIHS for 2025.

GMC’s powertrain warranty covers the Acadia 1 year and 10,000 miles longer than Mercedes covers the GLB. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 5 years or 60,000 miles. Coverage on the GLB ends after only 4 years or 50,000 miles.

The Acadia’s corrosion warranty is 1 year longer than the GLB’s (6 vs. 5 years).

There are over 4 times as many GMC dealers as there are Mercedes dealers, which makes it much easier should you ever need service under the Acadia’s warranty.

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 Acadia’s reliability 18 points higher than the GLB.

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that GMC vehicles are better in initial quality than Mercedes vehicles. With 5 fewer problems per 100 vehicles, JD Power ranks GMC higher than Mercedes.

J.D. Power and Associates’ 2024 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that GMC vehicles are more reliable than Mercedes With 12 fewer problems per 100 vehicles in the first three years of ownership, J.D. Power ranks GMC higher than Mercedes.

The Acadia’s 2.5 turbo 4-cylinder produces 107 more horsepower (328 vs. 221) and 68 lbs.-ft. more torque (326 vs. 258) than the GLB’s 2.0 turbo 4-cylinder hybrid.

To lower fuel costs and make buying fuel easier, the GMC Acadia uses regular unleaded gasoline. The GLB requires premium, which can cost on average about 84.9 cents more per gallon.

The Acadia FWD’s standard fuel tank has 3.5 gallons more fuel capacity than the GLB (19.4 vs. 15.9 gallons), for longer range between fill-ups. The Acadia AWD’s standard fuel tank has 5.8 gallons more fuel capacity than the GLB (21.7 vs. 15.9 gallons).

The Acadia has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The GLB doesn’t offer a cap-less fueling system.

The Acadia stops much shorter than the GLB:

For better traction, the Acadia has larger standard tires than the GLB (255/55R20 vs. 235/55R18). The Acadia Denali’s optional tires are larger than the largest tires available on the GLB (275/45R22 vs. 235/55R18).

For better ride, handling and brake cooling the Acadia Denali offers optional 22-inch wheels. The GLB’s largest wheels are only 20-inches.

The GMC Acadia’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The Mercedes GLB only has 5 wheel lugs per wheel.

The Acadia has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The GLB doesn’t offer vehicle monitored tire inflation.

The Acadia has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the GLB; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed. Some tire options on the GLB don’t have a run-flat feature, either.

For a smoother ride and more stable handling, the Acadia’s wheelbase is 9.5 inches longer than on the GLB (120.9 inches vs. 111.4 inches).

For better handling and stability, the average track (width between the wheels) on the Acadia is 5.3 inches wider in the front and 5.2 inches wider in the rear than the track on the GLB.

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

The Acadia uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The GLB doesn’t offer active noise cancellation.

The Acadia offers optional seating for 8 passengers; the GLB can only carry up to 7.

The Acadia has 1.9 inches more front headroom, 3.2 inches more front legroom, 6.1 inches more front shoulder room, .7 inches more rear headroom, 3.4 inches more rear legroom, 7.1 inches more rear shoulder room, 3.4 inches more third row headroom, 3 inches more third row legroom and 14.1 inches more third row shoulder room than the GLB.

The Acadia’s cargo area provides more volume than the GLB.

Pressing a switch automatically lowers the Acadia Denali’s second row seats and pressing a switch automatically lowers or raises the third row seats, to make changing between passengers and cargo easier. The GLB doesn’t offer automatic folding seats.

The Acadia has a 5000 lbs. towing capacity. The GLB has no towing capacity.

Standard Trailer Sway Control (TSC) on the Acadia uses the StabiliTrak® sensors to detect trailer sway, then uses individual brakes to counteract any swaying and help keep the tow vehicle and trailer steady. The GLB doesn’t offer electronic trailer sway control.

The Acadia’s instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The GLB does not have an oil pressure gauge.

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

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Acadia has standard extendable sun visors. The GLB doesn’t offer extendable visors.

Both the Acadia and the GLB have standard heated front seats. The Acadia also offers optional heated second row seats to keep those passengers extremely comfortable in the winter. Heated second row seats aren’t available in the GLB.

Optional air-conditioned seats in the Acadia (except Elevation) keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The GLB doesn’t offer air-conditioned seats.

The Acadia has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the vehicle heater warms up. A heated steering wheel costs extra on the GLB.

Consumer Reports® recommends the GMC Acadia, based on reliability, safety and performance.

The GMC Acadia outsold the Mercedes GLB by almost three to one during 2024.