2021 BMW X2 vs. 2020 Mercedes GLB

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/10/29

To help make backing safer, the X2’s optional cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The GLB doesn’t offer a cross-path warning system.

Both the X2 and the GLB have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, front-wheel drive, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available all-wheel drive and blind spot warning systems.

For its top level performance in IIHS driver-side small overlap frontal, moderate overlap frontal, side impact, rear impact and roof-crush tests, its standard front crash prevention system, its “Good” rating in the new passenger-side small overlap crash test, and its headlight’s “Acceptable” rating, the Insurance Institute for Highway Safety grants the X2 the rating of “Top Pick” for 2019, a rating granted to only 132 vehicles tested by the IIHS. The GLB has not been tested, yet.

Warranty

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The X2’s corrosion warranty is 7 years longer than the GLB’s (12 vs. 5 years).

BMW pays for scheduled maintenance on the X2 for 3 years and 36,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Mercedes doesn’t pay scheduled maintenance for the GLB.

Reliability

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A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the X2’s reliability 40 points higher than the GLB.

J.D. Power and Associates rated the X2 third among small premium suvs in their 2020 Initial Quality Study. The GLB isn’t in the top three in its category.

J.D. Power and Associates’ 2020 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks BMW 18th in initial quality. With 26 more problems per 100 vehicles, Mercedes is ranked 30th.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that BMW vehicles are more reliable than Mercedes vehicles. J.D. Power ranks BMW 7th in reliability, above the industry average. With 12 more problems per 100 vehicles, Mercedes is ranked 13th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that BMW vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks BMW 4 places higher in reliability than Mercedes.

Engine

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The X2’s standard 2.0 turbo 4-cylinder produces 7 more horsepower (228 vs. 221) than the GLB’s 2.0 turbo 4-cylinder. The X2 M35i’s standard 2.0 turbo 4-cylinder produces 80 more horsepower (301 vs. 221) and 73 lbs.-ft. more torque (331 vs. 258) than the GLB’s 2.0 turbo 4-cylinder.

As tested in Car and Driver the X2 M35i is faster than the Mercedes GLB:

X2

GLB

Zero to 60 MPH

4.6 sec

6 sec

Zero to 100 MPH

11.9 sec

17.1 sec

5 to 60 MPH Rolling Start

6.4 sec

6.9 sec

Quarter Mile

13.3 sec

14.7 sec

Speed in 1/4 Mile

105 MPH

94 MPH

Top Speed

133 MPH

131 MPH

Fuel Economy and Range

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On the EPA test cycle the X2 gets better fuel mileage than the GLB:

X2

GLB

2WD

2.0 turbo 4 cyl./Auto

24 city/32 hwy

23 city/30 hwy

2.0 4 cyl./Auto

4WD

2.0 turbo 4 cyl./Auto

24 city/31 hwy

23 city/31 hwy

2.0 4 cyl./Auto

Regenerative brakes improve the X2’s fuel efficiency by converting inertia back into energy instead of wasting it. The GLB doesn’t offer a regenerative braking system.

Transmission

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The X2’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The GLB doesn’t offer launch control.

Brakes and Stopping

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For better stopping power the X2 M35i’s front brake rotors are larger than those on the GLB:

X2 M35i

GLB

Front Rotors

14.2 inches

13 inches

Rear Rotors

13 inches

12.6 inches

The X2’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the GLB are solid, not vented.

Tires and Wheels

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The X2’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the GLB’s standard 55 series tires. The X2 M35i’s optional tires have a lower 40 series profile than the GLB’s optional 50 series tires.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the X2 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. Run-flat tires aren’t available on some tire packages on the GLB.

The X2 offers an optional space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the GLB; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed. Some tire options on the GLB don’t have a run-flat feature, either.

Suspension and Handling

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The X2 has standard front and rear gas-charged shocks for better control over choppy roads. The GLB’s suspension doesn’t offer gas-charged shocks.

The X2 xDrive28i handles at .91 G’s, while the GLB 250 4MATIC pulls only .89 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the X2’s turning circle is 1.2 feet tighter than the GLB’s (37.2 feet vs. 38.4 feet).

Chassis

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The X2 is 10.2 inches shorter than the GLB, making the X2 easier to handle, maneuver and park in tight spaces.

Cargo Capacity

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The X2 has a much larger cargo volume than the GLB with its rear seat up (21.6 vs. 5.1 cubic feet).

Pressing a switch automatically lowers the X2’s rear seats, to make changing between passengers and cargo easier. The GLB doesn’t offer automatic folding seats.

Ergonomics

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Consumer Reports rated the X2’s headlight performance “Very Good,” a higher rating than the GLB’s headlights, which were rated “Fair.”

Recommendations

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/10/29

Consumer Reports® recommends the BMW X2, based on reliability, safety and performance. The Mercedes GLB isn't recommended.

The BMW X2 outsold the Mercedes GLB by almost 10 to one during 2019.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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