Compare the2025 Chevrolet SuburbanVS 2025 Mercedes GLS

The Suburban (except LS with front bench seat) 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 GLS doesn’t offer front seat center airbags.

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

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

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

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

There are almost 8 times as many Chevrolet dealers as there are Mercedes dealers, which makes it much easier should you ever need service under the Suburban’s warranty.

The Suburban has a standard “limp home system” to keep drivers from being stranded if most or all of the engine’s coolant is lost. The engine will run on only half of its cylinders at a time, reduce its power and light a warning lamp on the dashboard so the driver can get to a service station for repairs. The GLS doesn’t offer a lost coolant limp home mode, so a coolant leak could strand you or seriously damage the truck’s engine.

J.D. Power and Associates rated the Suburban second among large suvs in their 2024 Initial Quality Study. The GLS 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 Chevrolet vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks Chevrolet second in initial quality, above the industry average. With 46 more problems per 100 vehicles, Mercedes is ranked 21st, below the industry average.

J.D. Power and Associates’ 2024 survey of the owners of three-year-old vehicles provides the statistics that show that Chevrolet vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Chevrolet fourth in reliability, above the industry average. With 44 more problems per 100 vehicles, Mercedes is ranked 21st.

The Suburban’s 3.0 turbo diesel produces 126 lbs.-ft. more torque (495 vs. 369) than the GLS 450’s standard 3.0 turbo 6-cylinder hybrid.

On the EPA test cycle the Suburban gets better mileage than the GLS:

An engine control system that can shut down some of the engine’s cylinders helps improve the Suburban V8’s fuel efficiency. The GLS doesn’t offer a system that can shut down part of the engine.

To lower fuel costs and make buying fuel easier, the Chevrolet Suburban uses regular unleaded gasoline (premium recommended with the 6.2 V8 engine for maximum performance). The GLS requires premium, which can cost on average about 84.9 cents more per gallon.

The Suburban has 4.5 gallons more fuel capacity than the GLS (28.3 vs. 23.8 gallons), for longer range between fill-ups.

The Suburban 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 GLS doesn’t offer a cap-less fueling system.

A 10-speed automatic is standard on the Chevrolet Suburban, for better acceleration and lower engine speed on the highway. Only a nine-speed automatic is available for the GLS.

For better stopping power the Suburban’s brake rotors are larger than those on the GLS:

For better ride, handling and brake cooling the Suburban RST offers optional 24-inch wheels. The GLS’ largest wheels are only 23-inches.

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

The Suburban 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 GLS doesn’t offer vehicle monitored tire inflation.

The Suburban has a standard full size spare tire so a flat doesn’t interrupt your trip. A full size spare isn’t available on the GLS; it requires you to depend on a temporary spare, which limits mileage and speed before replacement.

For a smoother ride and more stable handling, the Suburban’s wheelbase is 10.7 inches longer than on the GLS (134.1 inches vs. 123.4 inches).

For better handling and stability, the track (width between the wheels) on the Suburban is 1.9 inches wider in the front and .8 inches wider in the rear than the average track on the GLS.

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

The Suburban offers optional seating for 9 passengers; the GLS can only carry up to 7.

The Suburban’s cargo area provides more volume than the GLS.

The Suburban’s cargo area is larger than the GLS’ in every dimension:

Maximum trailer towing in the Mercedes GLS is limited to 7700 pounds. The Suburban offers up to a 8200 lbs. towing capacity.

The Suburban 4WD with optional equipment can be flat towed on all four wheels (dinghy towed), allowing recreational vehicle owners to bring it with them on the road. When they reach their destination, the Suburban can be unhitched and driven around locally. The GLS can’t be towed flat on the ground.

Trailer Sway Control is standard on the Suburban, using the StabiliTrak® sensors to detect trailer sway, then uses individual brakes to counteract any swaying and help keep the tow vehicle and trailer steady. A trailer sway program costs extra on the GLS.

The Suburban’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 GLS does not have an oil pressure gauge.

In case you lock your keys in your vehicle, or don’t have them with you, you can let yourself in using the Suburban’s available exterior PIN entry system. The GLS doesn’t offer an exterior PIN entry system, and its Mercedes-Benz Emergency Call can’t unlock the doors if the vehicle doesn’t have cell phone reception or the driver can’t contact the service.

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

Consumer Reports rated the Suburban’s headlight performance “Very Good,” a higher rating than the GLS’ headlights, which were rated “Good.”

The Suburban is available in both rear-wheel drive and four-wheel drive configurations. The GLS doesn’t offer a two-wheel drive configuration.

Insurance will cost less for the Suburban owner. The Complete Car Cost Guide estimates that insurance for the Suburban will cost $7290 to $13060 less than the GLS over a five-year period.

The Suburban will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the Suburban will retain 54.17% to 56.59% of its original price after five years, while the GLS only retains 45.74% to 47.18%.

According to The Car Book by Jack Gillis, the Suburban is less expensive to operate than the GLS because typical repairs cost much less on the Suburban than the GLS, including $452 less for a water pump, $91 less for a muffler, $100 less for front brake pads, $388 less for a starter, $208 less for fuel injection, $276 less for front struts and $783 less for a power steering pump.

The Chevrolet Suburban outsold the Mercedes GLS by 51% during 2024.