Compare the2024 Mercedes GLSVS 2024 Toyota Grand Highlander

Safety
Warranty
Reliability
Engine
Fuel Economy and Range
Transmission
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Cargo Capacity
Towing
Servicing Ease
Ergonomics

Safety

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The GLS’ pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Grand Highlander doesn’t offer pre-crash pretensioners.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the GLS. But it costs extra on the Grand Highlander.

Earlier warning of stopped traffic, traffic signals, dangerous road conditions, weather, or accidents, can keep driver's safer and prevent crashes. The GLS has Car-to-X Communication, a system that seamlessly communicates important warnings to the driver about impending danger, if they're available. The Grand Highlander doesn’t offer a system that can receive automated systems from other vehicles.

To help make backing out of a parking space safer, the GLS has standard Rear Cross-Traffic Alert with Active Brake Assist, systems which detect vehicles approaching from the sides and can automatically apply the brakes to prevent a collision. Only the Grand Highlander Limited/Platinum offers Parking Support Brake.

Both the GLS and the Grand Highlander have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear 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, rearview cameras, rear cross-path warning and driver alert monitors.

The Mercedes GLS weighs 567 to 1920 pounds more than the Toyota Grand Highlander. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

Warranty

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

Reliability

J.D. Power and Associates rated the GLS second among large premium suvs in their 2023 Initial Quality Study. The Grand Highlander isn’t in the top three in its category.

Engine

The GLS has more powerful engines than the Grand Highlander:

	Horsepower	Torque
GLS 450 3.0 turbo 6-cylinder hybrid	375 HP	369 lbs.-ft.
GLS 580 4.0 turbo V8 hybrid	510 HP	538 lbs.-ft.
Maybach GLS 600 4.0 turbo V8 hybrid	550 HP	538 lbs.-ft.
Grand Highlander Hybrid 2.5 DOHC 4-cylinder hybrid	245 HP
Grand Highlander 2.4 turbo 4-cylinder	265 HP	310 lbs.-ft.
Grand Highlander Hybrid Max 2.4 turbo 4-cylinder hybrid	362 HP	400 lbs.-ft.

As tested in Motor Trend the GLS 450 3.0 turbo 6-cylinder hybrid is faster than the Toyota Grand Highlander:

	GLS	Grand Highlander Hybrid	Grand Highlander turbo 4 cyl.
Zero to 60 MPH	5.8 sec	7.5 sec	8.3 sec
Quarter Mile	14.3 sec	15.7 sec	16.3 sec
Speed in 1/4 Mile	97 MPH	88.8 MPH	86.9 MPH

Fuel Economy and Range

In heavy traffic or at stoplights the GLS’ 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 Grand Highlander doesn’t offer an automatic engine start/stop system.

The GLS has 6.6 gallons more fuel capacity than the Grand Highlander Hybrid’s standard fuel tank (23.8 vs. 17.2 gallons), for longer range between fill-ups. The GLS has 6 gallons more fuel capacity than the Grand Highlander’s standard fuel tank (23.8 vs. 17.8 gallons).

Transmission

A nine-speed automatic is standard on the Mercedes GLS, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Grand Highlander.

Brakes and Stopping

For better stopping power the GLS’ brake rotors are larger than those on the Grand Highlander:

	GLS	Grand Highlander
Front Rotors	14.8 inches	13.4 inches
Rear Rotors	13.6 inches	13.3 inches

The GLS’ standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the Grand Highlander are solid, not vented.

The GLS stops much shorter than the Grand Highlander:

	GLS	Grand Highlander
70 to 0 MPH	154 feet	187 feet	Car and Driver
60 to 0 MPH	113 feet	128 feet	Motor Trend

Tires and Wheels

For better traction, the GLS has larger standard tires than the Grand Highlander (F:275/45R21 & R:315/40R21 vs. 255/65R18). The GLS’ optional tires are larger than the largest tires available on the Grand Highlander (F:285/40R23 & R:325/35R23 vs. 255/65R18).

The GLS’ standard 275/45R21 front and 315/40R21 rear tires provide better handling because they have a lower 45 series front and 40 series rear profile (height to width ratio) that provides a stiffer sidewall than the Grand Highlander XLE’s 65 series tires. The GLS’ optional 285/40R23 front and 325/35R23 rear tires have a lower 40 series front and 35 series rear profile than the Grand Highlander Limited/Platinum’s 55 series tires.

For better ride, handling and brake cooling the GLS has standard 21-inch wheels. Smaller 18-inch wheels are standard on the Grand Highlander XLE. The GLS’ optional 23-inch wheels are larger than the 20-inch wheels on the Grand Highlander Limited/Platinum.

Suspension and Handling

The front and rear suspension of the GLS uses air springs for a smoother, controlled ride than the Grand Highlander, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The GLS offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Toyota doesn’t offer an active suspension on the Grand Highlander.

The GLS has a standard 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 Grand Highlander’s suspension doesn’t offer adjustable shock absorbers.

The GLS has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The GLS’ height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The Grand Highlander doesn’t offer a load leveling suspension.

The GLS 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 Grand Highlander doesn’t offer variable-assist power steering.

The GLS’ 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 Grand Highlander doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the GLS’ wheelbase is 7.3 inches longer than on the Grand Highlander (123.4 inches vs. 116.1 inches).

For better handling and stability, the average track (width between the wheels) on the GLS is 1.3 inches wider in the front and 2.1 inches wider in the rear than the track on the Grand Highlander.

The GLS 450 handles at .92 G’s, while the Grand Highlander Platinum AWD pulls only .80 G’s of cornering force in a Car and Driver skidpad test.

The GLS 450 executes Motor Trend’s “Figure Eight” maneuver 2.2 seconds quicker than the Grand Highlander XLE AWD (26.4 seconds @ .7 average G’s vs. 28.6 seconds @ .58 average G’s).

For greater off-road capability the GLS has a 2.1 inches greater minimum ground clearance than the Grand Highlander (10.1 vs. 8 inches), allowing the GLS to travel over rougher terrain without being stopped or damaged. The GLS Off-Road Package’s minimum ground clearance is 3.3 inches higher than on the Grand Highlander (11.3 vs. 8 inches).

Cargo Capacity

The GLS has a standard third row seat which folds flat into the floor. This completely clears a very large cargo area quickly. The Grand Highlander doesn’t offer seats that fold into the floor.

Pressing a switch automatically lowers or raises the GLS’ second and third row seats, to make changing between cargo and passengers easier. The Grand Highlander doesn’t offer automatic folding seats.

Towing

The GLS’ standard towing capacity is much higher than the Grand Highlander’s (7716 vs. 5000 pounds).

While the Grand Highlander Hybrid can only tow 3500, any GLS can tow a minimum of 7716 pounds.

Servicing Ease

The GLS uses gas struts to support the hood for easier service access. The Grand Highlander 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 engine in the GLS is mounted longitudinally (North-South), instead of sideways, as in the Grand Highlander. This makes it easier to service and maintain, because the accessory belts are in front.

Ergonomics

Unlike the driver-only memory seat and mirrors in the Grand Highlander Limited/Platinum, the GLS has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, 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 GLS’ standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. The Grand Highlander doesn’t offer an easy entry system.

The GLS’ rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The Grand Highlander’s standard manually variable intermittent wipers have to be constantly adjusted.

Heated windshield washer fluid is optional on the GLS to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The Grand Highlander doesn’t offer heated windshield washer fluid.

To better shield the driver and front passenger’s vision, the GLS has standard dual-element sun visors that can block glare from two directions simultaneously. The Grand Highlander doesn’t offer secondary sun visors.

The GLS’ 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 Grand Highlander has an automatic rear view mirror, but its side mirrors don’t dim.

The GLS has standard heated front and optional heated second and third row seats, which keep the driver and passengers extremely comfortable in the winter. Toyota doesn’t offer heated seats in the third row of the Grand Highlander.

The GLS offers an optional center folding armrest for the third row rear passengers. A center armrest helps make rear passengers more comfortable and can provide a barrier between children. The Grand Highlander doesn’t offer a third row rear seat center armrest.

The GLS offers optional massaging front and second row seats, which keep the driver and middle row passengers. Massaging seats aren’t available in the Grand Highlander.

The GLS’ Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The Grand Highlander doesn’t offer an automated parking system.

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