Certified Benz & Beemer Compares 2012 BMW X5 VS 2012 Mercedes GLK-Class Near Scottsdale, AZ

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2012 BMW X5

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VS

2012 Mercedes GLK-Class

Safety Comparison

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To provide maximum traction and stability on all roads, All Wheel Drive is standard on the X5. But it costs extra on the GLK-Class.

When descending a steep, off-road slope, the X5’s standard Hill Descent Control allows you to creep down safely. The GLK-Class doesn’t offer Hill Descent Control.

The X5’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The GLK-Class doesn’t offer a lane departure warning system.

The X5 offers an optional Top View to allow the driver to see objects all around the vehicle on a screen. The GLK-Class only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

Both the X5 and the GLK-Class have standard driver and passenger frontal airbags, front side-impact airbags, head airbags, front seatbelt pretensioners, plastic fuel tanks, four wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

The BMW X5 weighs 881 to 1367 pounds more than the Mercedes GLK-Class. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

Warranty Comparison

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The X5’s corrosion warranty is 8 years and unlimited miles longer than the GLK-Class’ (12/unlimited vs. 4/50,000).

BMW pays for scheduled maintenance on the X5 for 4 years and 50,000 miles. BMW will pay for oil changes, tire rotation, lubrication and any other scheduled maintenance. Mercedes doesn’t pay scheduled maintenance for the GLK-Class.

There are over 12 percent more BMW dealers than there are Mercedes dealers, which makes it easier to get service under the X5’s warranty.

Reliability Comparison

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A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without their vehicle while it’s being repaired. Consumer Reports predicts that the BMW X5 V8’s reliability will be 55% better than the GLK-Class.

Engine Comparison

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The X5 xDrive35i’s standard 3.0 turbo 6 cyl. produces 32 more horsepower (300 vs. 268) and 42 lbs.-ft. more torque (300 vs. 258) than the GLK-Class’ 3.5 DOHC V6. The X5 xDrive50i’s standard 4.4 turbo V8 produces 132 more horsepower (400 vs. 268) and 192 lbs.-ft. more torque (450 vs. 258) than the GLK-Class’ 3.5 DOHC V6.

The X5’s 3.0 turbo diesel produces 167 lbs.-ft. more torque (425 vs. 258) than the GLK-Class’ 3.5 DOHC V6.

As tested in Motor Trend the X5 xDrive35i is faster than the Mercedes GLK-Class:

X5

GLK-Class

Zero to 60 MPH

6.1 sec

6.8 sec

Quarter Mile

14.6 sec

15.1 sec

Speed in 1/4 Mile

92.5 MPH

91.8 MPH

For more instantaneous acceleration and better engine flexibility in any gear, the X5’s engines produce their peak horsepower at lower RPM’s than the GLK-Class:

Horsepower

X5 xDrive35d 3.0 turbo diesel 6 cyl.

4200 RPM

X5 xDrive35i 3.0 turbo 6 cyl.

5800 RPM

X5 xDrive50i 4.4 turbo V8

5500 RPM

GLK350 3.5 DOHC V6

6000 RPM

Fuel Economy and Range Comparison

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On the EPA test cycle the X5 xDrive35d gets better fuel mileage than the GLK-Class 4Matic (19 city/26 hwy vs. 16 city/21 hwy).

On the EPA test cycle the X5 xDrive35i gets better fuel mileage than the GLK350 4Matic (16 city/23 hwy vs. 16 city/21 hwy).

Regenerative brakes improve the X5 (except diesel)’s fuel efficiency by converting inertia back into energy instead of wasting it. The GLK-Class doesn’t offer a regenerative braking system.

The X5 has 5.1 gallons more fuel capacity than the GLK-Class (22.5 vs. 17.4 gallons), for longer range between fill-ups.

Brakes and Stopping Comparison

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For better stopping power the X5’s brake rotors are larger than those on the GLK-Class:

X5 xDrive35

X5 xDrive50i

GLK-Class

Front Rotors

13.7 inches

15.2 inches

13 inches

Rear Rotors

12.6 inches

13.6 inches

11.8 inches

The X5 stops much shorter than the GLK-Class:

X5

GLK-Class

70 to 0 MPH

157 feet

180 feet

Car and Driver

60 to 0 MPH

113 feet

132 feet

Motor Trend

Tires and Wheels Comparison

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For better traction, the X5 has larger standard tires than the GLK-Class (255/55R18 vs. 235/50R19). The X5’s optional tires are larger than the largest tires available on the GLK-Class (F:275/40R20 & R:315/35R20 vs. 235/50R19).

The X5’s optional 275/40R20 front and 315/35R20 rear tires provide better handling because they have a lower 40 series front and 35 series rear profile (height to width ratio) that provides a stiffer sidewall than the GLK-Class’ optional 45 series tires.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the X5 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The GLK-Class doesn’t offer run-flat tires.

Suspension and Handling Comparison

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The X5 offers an optional automatic rear load leveling suspension to keep ride height level with a heavy load or when towing. The GLK-Class doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the X5’s wheelbase is 7 inches longer than on the GLK-Class (115.5 inches vs. 108.5 inches).

For better handling and stability, the track (width between the wheels) on the X5 is 4.6 inches wider in the front and 2.5 inches wider in the rear than on the GLK-Class.

The X5 xDrive35i handles at .89 G’s, while the GLK350 4Matic pulls only .78 G’s of cornering force in a Car and Driver skidpad test.

The X5 xDrive35d executes Motor Trend’s “Figure Eight” maneuver quicker than the GLK350 4Matic (27.5 seconds @ .62 average G’s vs. 28.2 seconds @ .59 average G’s).

For greater off-road capability the X5 has a greater minimum ground clearance than the GLK-Class (8.7 vs. 7.9 inches), allowing the X5 to travel over rougher terrain without being stopped or damaged.

Passenger Space Comparison

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The X5 offers optional seating for 7 passengers; the GLK-Class can only carry 5.

The X5 has 4.8 inches more front shoulder room, 1.5 inches more rear legroom and 2.6 inches more rear shoulder room than the GLK-Class.

For enhanced passenger comfort on long trips the X5’s middle row seats recline. The GLK-Class’ rear seats don’t recline.

Cargo Capacity Comparison

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The X5’s cargo area provides more volume than the GLK-Class.

X5

GLK-Class

Second Seat Folded

75.2 cubic feet

54.7 cubic feet

The X5’s cargo area is larger than the GLK-Class’ in almost every dimension:

X5

GLK-Class

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

15.7”/42”/73.4”

n.a./35”/65.9”

Max Width

49.1”

48”

Min Width

43.3”

37.4”

Height

33”

33”

The X5’s rear cargo window opens separately from the rest of the tailgate door to allow quicker loading of small packages. The GLK-Class’ rear cargo window doesn’t open.

Ergonomics Comparison

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The X5’s standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the GLK-Class.

The X5 offers an optional heads-up display which projects speed and navigation instruction readouts onto the windshield, allowing drivers to view information without diverting their eyes from the road. The GLK-Class doesn’t offer a heads-up display.

The X5’s 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 GLK-Class’ standard manually variable intermittent wipers have to be constantly adjusted.

Heated windshield washer nozzles are standard on the X5 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The GLK-Class doesn’t offer heated windshield washer nozzles.

To improve rear visibility by keeping the rear window clear, the X5 has a standard rear variable intermittent wiper with a full on position. The rear wiper standard on the GLK-Class only has an intermittent setting, so in a hard rain visibility isn’t as good.

Consumer Reports rated the X5’s headlight performance “Good,” a higher rating than the GLK-Class’ headlights, which were rated “Poor.”

While driving with high beams on, sensitive light sensors available for the X5 detect other vehicles which could be blinded and automatically switch to low beams. The GLK-Class doesn’t offer automatic dimming high beams.

Both the X5 and the GLK-Class offer optional heated front seats. The X5 also offers optional heated second row seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the GLK-Class.

The X5’s optional air conditioned front seats cool the driver and front passenger and help take the sting out of hot leather in Summer. The GLK-Class doesn’t offer air conditioned front seats.

To keep a safe, consistent following distance, the X5 offers an optional Adaptive Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The GLK-Class doesn’t offer an adaptive cruise control.

Optional BMW Apps for the X5 allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, tagging songs to buy them later, following twitter accounts and other online activities without taking their eyes off the road or their hands from the wheel. The GLK-Class doesn’t offer factory integrated smartphone program access.

Economic Advantages Comparison

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The X5 will cost the buyer less in the long run because of its superior resale value. Kiplinger’s estimates that the X5 will retain a greater percentage of its original price after two and four years than the GLK-Class.

X5

GLK-Class

Four Year

43% to 46%

30% to 33%

Two Year

59% to 64%

47% to 52%

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