2020 Infiniti QX50 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 2020/07/10

Over 200 people are killed each year when backed over by motor vehicles. The QX50 has standard Rear Automatic Braking that uses rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The GLB doesn’t offer backup collision prevention brakes.

To help make backing safer, the QX50’s 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 QX50 and the GLB have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, 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 around view monitors.

Warranty

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The QX50 comes with a full 4-year/60,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The GLB’s 4-year/50,000-mile basic warranty expires 10,000 miles sooner.

Infiniti’s powertrain warranty covers the QX50 2 years and 20,000 miles longer than Mercedes covers the GLB. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the GLB ends after only 4 years or 50,000 miles.

The QX50’s corrosion warranty is 2 years longer than the GLB’s (7 vs. 5 years).

Reliability

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J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Infiniti vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Infiniti 11th in reliability, above the industry average. With 6 more problems per 100 vehicles, Mercedes is ranked 13th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Infiniti vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Infiniti 8 places higher in reliability than Mercedes.

Engine

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The QX50’s 2.0 turbo 4-cylinder produces 47 more horsepower (268 vs. 221) and 22 lbs.-ft. more torque (280 vs. 258) than the GLB’s 2.0 turbo 4-cylinder.

Transmission

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The QX50 has a standard continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The GLB doesn’t offer a CVT.

Brakes and Stopping

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The QX50’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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For better traction, the QX50 Sensory/Autograph’s tires are larger than the largest tires available on the GLB (255/45R20 vs. 235/55R18).

The QX50 Sensory/Autograph’s tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the GLB’s optional 50 series tires.

For better ride, handling and brake cooling the QX50 has standard 19-inch wheels. Smaller 18-inch wheels are standard on the GLB.

The QX50 has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The GLB doesn’t offer vehicle monitored tire inflation.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the QX50 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.

Suspension and Handling

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For better handling and stability, the average track (width between the wheels) on the QX50 is 1.2 inches wider in the front and .8 inches wider in the rear than the track on the GLB.

For better maneuverability, the QX50’s turning circle is 2 feet tighter than the GLB’s (36.4 feet vs. 38.4 feet).

For greater off-road capability the QX50 has a greater minimum ground clearance than the GLB (8.6 vs. 7.9 inches), allowing the QX50 to travel over rougher terrain without being stopped or damaged.

Chassis

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The QX50 uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The GLB doesn’t offer active noise cancellation.

Passenger Space

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The QX50 has .3 inches more front headroom, 2 inches more front shoulder room, .6 inches more rear legroom and 2.2 inches more rear shoulder room than the GLB.

Cargo Capacity

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The QX50 has a much larger cargo volume with its rear seat up than the GLB with its rear seat up (31.4 vs. 5.1 cubic feet). The QX50 has a much larger cargo volume with its rear seat folded than the GLB with its rear seat folded (65.1 vs. 62 cubic feet).

A low lift-over cargo hatch design makes loading and unloading the QX50 easier. The QX50’s cargo hatch lift-over height is 26.6 inches, while the GLB’s liftover is 28.5 inches.

The QX50’s cargo area is larger than the GLB’s in almost every dimension:

QX50

GLB

Length to seat (2nd/1st)

39”/71.7”

32.5”/71”

Max Width

54.5”

41.6”

Min Width

41.5”

41.6”

Height

31.2”

37.2”

Servicing Ease

© 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 2020/07/10

J.D. Power and Associates surveys of service recipients show that Infiniti service is better than Mercedes. J.D. Power ranks Infiniti fourth in service department satisfaction. With an 8% lower rating, Mercedes is ranked fifth.

Ergonomics

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To improve rear visibility by keeping the rear window clear, the QX50 has a standard rear fixed intermittent wiper with a full on position. The rear wiper standard on the GLB only has an intermittent setting, so in a hard rain visibility isn’t as good.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the QX50 has standard extendable sun visors. The GLB doesn’t offer extendable visors.

Manual rear side window sunshades are available in the QX50 to help block heat and glare for the rear passengers. The GLB doesn’t offer rear side window sunshades.

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 2020/07/10

Consumer Reports® recommends the Infiniti QX50, based on reliability, safety and performance.

The Infiniti QX50 outsold the Mercedes GLB by almost 16 to one during 2019.

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