Certified Benz & Beemer Compares 2015 Mercedes Benz GL-Class VS 2015 Lexus LX570 Near Phoenix, AZ

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2015 Mercedes Benz GL-Class

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VS

2015 Lexus LX570

Safety Comparison

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The GL-Class offers optional PRE-SAFE Brake, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The LX570 doesn't offer collision warning or crash mitigation brakes.

An active infrared night vision system optional on the GL-Class helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera and near-infrared lights to detect heat, the system then displays the image on a monitor in the dashboard. The LX570 doesn’t offer a night vision system.

The GL-Class’ optional 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. The LX570 doesn’t offer a lane departure warning system.

The GL-Class’ optional blind spot warning system uses digital cameras monitored by computer to alert the driver to moving objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. The LX570 doesn’t offer a system to reveal objects in the driver’s blind spots.

The GL-Class’ driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The LX570 doesn’t offer a driver alert monitor.

For better protection of the passenger compartment, the GL-Class uses safety cell construction with a three-dimensional high-strength frame that surrounds the passenger compartment. It provides extra impact protection and a sturdy mounting location for door hardware and side impact beams. The LX570 uses a body-on-frame design, which has no frame members above the floor of the vehicle.

Both the GL-Class and the LX570 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, four-wheel antilock brakes, all-wheel drive, traction control and electronic stability systems to prevent skidding.

Warranty Comparison

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There are over 58 percent more Mercedes dealers than there are Lexus dealers, which makes it much easier should you ever need service under the GL-Class’ warranty.

Engine Comparison

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The GL550’s standard 4.7 turbo V8 produces 46 more horsepower (429 vs. 383) and 113 lbs.-ft. more torque (516 vs. 403) than the LX570’s 5.7 DOHC V8. The GL63 AMG’s standard 5.5 turbo V8 produces 167 more horsepower (550 vs. 383) and 157 lbs.-ft. more torque (560 vs. 403) than the LX570’s 5.7 DOHC V8.

The GL-Class’ 3.0 turbo V6 diesel produces 52 lbs.-ft. more torque (455 vs. 403) than the LX570’s 5.7 DOHC V8.

As tested in Car and Driver the GL63 AMG is faster than the Lexus LX570:

GL-Class

LX570

Zero to 60 MPH

4.8 sec

6.7 sec

Zero to 100 MPH

11.2 sec

17.5 sec

5 to 60 MPH Rolling Start

5.5 sec

7.2 sec

Quarter Mile

13.2 sec

15.2 sec

Speed in 1/4 Mile

109 MPH

93 MPH

Top Speed

156 MPH

139 MPH

Fuel Economy and Range Comparison

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On the EPA test cycle the GL350 BlueTEC gets better fuel mileage than the LX570 (19 city/26 hwy vs. 12 city/17 hwy).

On the EPA test cycle the GL450 gets better fuel mileage than the LX570 (17 city/21 hwy vs. 12 city/17 hwy).

In heavy traffic or at stoplights the GL450/GL63 AMG’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. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The LX570 doesn’t offer an automatic engine start/stop system.

The GL-Class has 1.8 gallons more fuel capacity than the LX570 (26.4 vs. 24.6 gallons), for longer range between fill-ups.

Brakes and Stopping Comparison

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For better stopping power the GL-Class’ brake rotors are larger than those on the LX570:

GL350 BlueTEC

GL450/550

GL63 AMG

LX570

Front Rotors

13.8 inches

14.8 inches

15.4 inches

13.4 inches

The GL-Class stops much shorter than the LX570:

GL-Class

LX570

70 to 0 MPH

162 feet

178 feet

Car and Driver

Tires and Wheels Comparison

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For better traction, the GL550/GL63 AMG’s tires are larger than the largest tires available on the LX570 (295/40R21 vs. 285/50R20).

The GL550/GL63 AMG’s tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the LX570’s 50 series tires.

For better ride, handling and brake cooling the GL550/GL63 AMG has standard 21-inch wheels. The LX570’s largest wheels are only 20-inches.

Suspension and Handling Comparison

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For superior ride and handling, the Mercedes GL-Class has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Lexus LX570 has a solid rear axle, with a non-independent rear suspension.

The GL-Class offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The LX570 doesn’t offer an active sway bar system.

The front and rear suspension of the GL-Class uses air springs for a smoother, controlled ride than the LX570, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The GL-Class’ 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 LX570 doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the GL-Class’ wheelbase is 8.9 inches longer than on the LX570 (121.1 inches vs. 112.2 inches).

For better handling and stability, the average track (width between the wheels) on the GL-Class is .8 inches wider in the front and 1.8 inches wider in the rear than the track on the LX570.

The GL63 AMG handles at .84 G’s, while the LX570 pulls only .73 G’s of cornering force in a Car and Driver skidpad test.

For greater off-road capability the GL-Class has a 2 inches greater minimum ground clearance than the LX570 (10.9 vs. 8.9 inches), allowing the GL-Class to travel over rougher terrain without being stopped or damaged. The GL-Class’ minimum ground clearance is 3.1 inches higher than on the LX570 (12 vs. 8.9 inches).

Chassis Comparison

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The Mercedes GL-Class may be more efficient, handle and accelerate better because it weighs about 250 to 650 pounds less than the Lexus LX570.

Unibody construction makes the GL-Class’ chassis much stiffer, which contributes to better handling, and enables softer springs to be used for a better ride. Unibody construction’s stiffness also contributes to better durability and less body squeaks and rattles. The LX570 doesn’t use unibody construction, but a body-on-frame design.

Passenger Space Comparison

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The GL-Class has 2.9 inches more front headroom, 1.1 inches more rear headroom, 4.1 inches more rear legroom, 3.1 inches more third row headroom and 6.7 inches more third row legroom than the LX570.

Cargo Capacity Comparison

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The GL-Class’ cargo area provides more volume than the LX570.

GL-Class

LX570

Behind Third Seat

16 cubic feet

15.5 cubic feet

Third Seat Folded

49.4 cubic feet

41 cubic feet

Second Seat Folded

93.8 cubic feet

83.1 cubic feet

The GL-Class’ cargo area is larger than the LX570’s in every dimension:

GL-Class

LX570

Length to seat (3rd/2nd/1st)

19.7”/52.4”/84.1”

15.6”/46”/66.8”

Pressing a switch automatically lowers the GL-Class’ optional second and third row seats, to make changing between passengers and cargo easier. The LX570 doesn’t offer automatic folding second row seats.

The GL-Class’ liftgate lifts up in one piece, completely out of the way of loading and unloading, while sheltering the cargo loading area. The LX570’s tailgate’s top part raises up, but the bottom part lowers, getting in the way of loading and making an uneven surface for sliding cargo.

Ergonomics Comparison

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Unlike the driver-only memory system in the LX570, the GL-Class offers an optional driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The power windows standard on both the GL-Class and the LX570 have locks to prevent small children from operating them. When the lock on the GL-Class is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The LX570 prevents the driver from operating the other windows just as it does the other passengers.

While driving with high beams on, sensitive light sensors available for the GL-Class detect other vehicles which could be blinded and automatically switch to low beams. The LX570 doesn’t offer automatic dimming high beams.

The GL-Class’ power mirror controls are mounted on the armrest for easy access. The LX570’s power mirror controls are on the dash, hidden behind the steering wheel, where they are awkward to manipulate.

The GL-Class’ optional Active Parking Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The LX570 doesn’t offer an automated parking system.

Recommendations Comparison

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The Mercedes GL-Class won the Best Resale Value award in Kiplinger’s 2014 car issue. The Lexus LX570 didn't win any award.

J.D. Power and Associates rated the GL-Class third among large premium SUVs in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The LX570 isn’t in the top three in its category.

Motor Trend selected the GL-Class as their 2013 Sport Utility of the Year. The LX570 has never been chosen.

The Mercedes GL-Class outsold the Lexus LX570 by almost six to one during the 2014 model year.

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