2020 Porsche Macan 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 2020/07/15

The Macan has standard Multi-collision Brake System, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The GLB 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 Macan. But it costs extra on the GLB.

Both the Macan and the GLB have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available crash mitigating brakes, blind spot warning systems and around view monitors.

Warranty

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

Reliability

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The battery on the Macan is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the Macan’s battery 20 to 30 degrees cooler, its life is increased by years. The GLB’s battery is in the hot engine compartment.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Porsche vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 26 more problems per 100 vehicles, Mercedes is ranked 13th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Porsche vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Porsche fourth in reliability. Mercedes is ranked 21st.

Engine

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The Macan’s standard 2.0 turbo 4-cylinder produces 27 more horsepower (248 vs. 221) and 15 lbs.-ft. more torque (273 vs. 258) than the GLB’s 2.0 turbo 4-cylinder. The Macan S’ standard 3.0 turbo V6 produces 127 more horsepower (348 vs. 221) and 96 lbs.-ft. more torque (354 vs. 258) than the GLB’s 2.0 turbo 4-cylinder. The Macan GTS’ standard 2.9 turbo V6 produces 154 more horsepower (375 vs. 221) and 125 lbs.-ft. more torque (383 vs. 258) than the GLB’s 2.0 turbo 4-cylinder. The Macan Turbo’s standard 2.9 turbo V6 produces 213 more horsepower (434 vs. 221) and 148 lbs.-ft. more torque (406 vs. 258) than the GLB’s 2.0 turbo 4-cylinder.

Fuel Economy and Range

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The Macan has 3.9 gallons more fuel capacity than the GLB (19.8 vs. 15.9 gallons), for longer range between fill-ups.

Transmission

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The Macan’s optional 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 Macan’s brake rotors are larger than those on the GLB:

Macan

Macan S

Macan Turbo

Macan Turbo opt.

GLB

Front Rotors

13.6 inches

14.2 inches

15.4 inches

15.6 inches

13 inches

Rear Rotors

13 inches

13 inches

14 inches

14.6 inches

12.6 inches

The Macan’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.

The Macan offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The GLB doesn’t offer ceramic brake rotors.

Tires and Wheels

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For better traction, the Macan’s optional tires are larger than the largest tires available on the GLB (F:265/40R21 & R:295/35R21 vs. 235/55R18).

The Macan’s optional 265/40R21 front and 295/35R21 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 GLB’s optional 50 series tires.

For better ride, handling and brake cooling the Macan offers optional 21-inch wheels. The GLB’s largest wheels are only 20-inches.

The Macan has a standard 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 Macan has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The Macan’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The GLB doesn’t offer a load leveling suspension.

For better handling and stability, the average track (width between the wheels) on the Macan is 1.8 inches wider in the front and 1.9 inches wider in the rear than the track on the GLB.

For greater off-road capability the Macan has a greater minimum ground clearance than the GLB (8 vs. 7.9 inches), allowing the Macan to travel over rougher terrain without being stopped or damaged. The Macan’s minimum ground clearance is 1.1 inches higher than on the GLB (9 vs. 7.9 inches).

Chassis

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The front grille of the Macan uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The GLB doesn’t offer active grille shutters.

Servicing Ease

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The engine in the Macan is mounted longitudinally (North-South), instead of sideways, as in the GLB. This makes it easier to service and maintain, because the accessory belts are in front.

J.D. Power and Associates surveys of service recipients show that Porsche service is better than Mercedes. J.D. Power ranks Porsche first in service department satisfaction. With a 23% lower rating, Mercedes is ranked fifth.

Ergonomics

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

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

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 2020/07/15

Consumer Reports® recommends the Porsche Macan, based on reliability, safety and performance.

The Macan was chosen as one of Car and Driver’s “Top Ten” in 2020. The GLB has never been a Car and Driver “Top Ten” pick.

The Porsche Macan outsold the Mercedes GLB by over 19 to one during 2019.

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

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