Compare the2025 Mercedes GLSVS 2025 Kia Telluride

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

Safety

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For enhanced safety, the front and second-row seat shoulder belts of the Mercedes GLS 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 Kia Telluride doesn’t offer pretensioners for its second-row seat belts.

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

The GLS offers an optional Post Collision Brake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Telluride 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.

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

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 Telluride doesn’t offer a system that can receive automated systems from infrastructure or other vehicles.

Both the GLS and the Telluride have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, 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 1090 to 2086 pounds more than the Kia Telluride. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

Warranty

The GLS’ 5 year corrosion warranty has no mileage limitations, but the corrosion warranty on the Telluride runs out after 100,000 miles.

Engine

The GLS 450’s standard 3.0 turbo 6-cylinder hybrid produces 84 more horsepower (375 vs. 291) and 107 lbs.-ft. more torque (369 vs. 262) than the Telluride’s 3.8 DOHC V6. The GLS 580’s standard 4.0 turbo V8 hybrid produces 219 more horsepower (510 vs. 291) and 276 lbs.-ft. more torque (538 vs. 262) than the Telluride’s 3.8 DOHC V6. The Maybach GLS 600’s standard 4.0 turbo V8 hybrid produces 259 more horsepower (550 vs. 291) and 276 lbs.-ft. more torque (538 vs. 262) than the Telluride’s 3.8 DOHC V6.

As tested in Motor Trend the GLS 450 3.0 turbo 6-cylinder hybrid is faster than the Kia Telluride:

	GLS	Telluride
Zero to 60 MPH	5.5 sec	7.2 sec
Quarter Mile	14 sec	15.4 sec
Speed in 1/4 Mile	99.8 MPH	92.9 MPH

Fuel Economy and Range

On the EPA test cycle the GLS 450 gets better fuel mileage than the Telluride 4x4 (19 city/24 hwy vs. 18 city/23 hwy).

Regenerative brakes improve the GLS’ fuel efficiency by converting inertia back into energy instead of wasting it. The Telluride doesn’t offer a regenerative braking system.

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 Telluride doesn’t offer an automatic engine start/stop system.

The GLS has 5 gallons more fuel capacity than the Telluride (23.8 vs. 18.8 gallons), for longer range between fill-ups.

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 Telluride.

Brakes and Stopping

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

	GLS	Telluride
Front Rotors	14.8 inches	13.4 inches
Rear Rotors	13.6 inches	12 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 Telluride are solid, not vented.

The GLS stops much shorter than the Telluride:

	GLS	Telluride
70 to 0 MPH	154 feet	177 feet	Car and Driver
60 to 0 MPH	107 feet	126 feet	Motor Trend

Tires and Wheels

For better traction, the GLS has larger standard tires than the Telluride (F:275/45R21 & R:315/40R21 vs. 245/60R18). The GLS’ optional tires are larger than the largest tires available on the Telluride (F:285/40R23 & R:325/35R23 vs. 245/60R18).

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 Telluride LX/X-Pro’s standard 60 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 Telluride S/EX/SX’s 50 series tires.

For better ride, handling and brake cooling the GLS has standard 21-inch wheels. Smaller 18-inch wheels are standard on the Telluride LX/X-Pro. The GLS’ optional 23-inch wheels are larger than the 20-inch wheels on the Telluride S/EX/SX.

Suspension and Handling

The front and rear suspension of the GLS uses air springs for a smoother, controlled ride than the Telluride, 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. Kia doesn’t offer an active suspension on the Telluride.

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 Telluride’s suspension doesn’t offer adjustable shock absorbers.

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 Telluride doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the GLS’ wheelbase is 9.2 inches longer than on the Telluride (123.4 inches vs. 114.2 inches).

The GLS’ front to rear weight distribution is more even (52% to 48%) than the Telluride’s (55% to 45%). This gives the GLS more stable handling and braking.

The GLS 450 handles at .92 G’s, while the Telluride SX Prestige 4x4 pulls only .79 G’s of cornering force in a Car and Driver skidpad test.

The Maybach GLS 600 executes Motor Trend’s “Figure Eight” maneuver 2.2 seconds quicker than the Telluride SX 4x4 (26.5 seconds @ .69 average G’s vs. 28.7 seconds @ .62 average G’s).

For better maneuverability, the Maybach GLS 600’s turning circle is 3.1 feet tighter than the Telluride’s (35.7 feet vs. 38.8 feet).

For greater off-road capability the GLS has a 2.1 inches greater minimum ground clearance than the Telluride (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 2.9 inches higher than on the Telluride X-Line (11.3 vs. 8.4 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 Telluride doesn’t offer seats that fold into the floor.

Both the GLS and the Telluride have standard second row automatic folding seats. The GLS’ third row seats also fold up or down at the press of a switch. The Telluride doesn’t offer automatic folding third row seats.

Towing

The GLS’ standard towing capacity is much higher than the Telluride’s (7700 vs. 5000 pounds).

Servicing Ease

The engine in the GLS is mounted longitudinally (North-South), instead of sideways, as in the Telluride. This makes it easier to service and maintain, because there are no rear spark plugs and the accessory belts are in front.

Ergonomics

Unlike the driver-only memory seat and mirrors in the Telluride SX, 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.

If the windows are left open on the GLS the driver can close them all at the outside door handle or from a distance using the remote (remote must be aimed at door sensor). On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Telluride can only operate the windows from inside the vehicle, with the ignition on.

The GLS’ 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. Smart Key standard on the Telluride doesn’t offer a sensor on the rear doors, so you’ll have to reach a front handle to unlock the rear door.

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 Telluride’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 Telluride doesn’t offer heated windshield washer fluid.

To help drivers avoid possible obstacles, the GLS has standard cornering lights to illuminate around corners when the turn signals are activated. The Telluride doesn’t offer cornering lights. The GLS also has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

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 Telluride 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 Telluride offers an automatic rear view mirror, but its side mirrors don’t dim.

The Mercedes GLS has power folding mirrors that offer unparalleled convenience while maneuvering in tight places or parked. With the mirrors folded it’s easier to walk past and help prevent parking damage. The mirrors can be quickly unfolded when the driver is ready to leave. Power folding mirrors are only offered on the Telluride EX/SX.

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. Kia doesn’t offer heated seats in the third row of the Telluride.

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 Telluride 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 Telluride.

The Mercedes GLS has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the rear view mirror. Homelink® eliminates the need for separate garage door openers and associated risks of losing, breaking, or having dead batteries. Kia charges extra for Homelink® on the Telluride.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes GLS has a standard wireless phone charging system (Qi) in the center console. Only the Telluride S/EX/SX offers wireless charging. The GLS also offers Qi charging in the second row seat. The Telluride doesn’t offer wireless charging in its second row seat.

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

Economic Advantages

According to The Car Book by Jack Gillis, the GLS is less expensive to operate than the Telluride because it costs $181 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the GLS than the Telluride, including $22 less for a fuel pump and $596 less for a timing belt/chain.

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