2020 Mercedes GLB vs. 2021 Chevrolet Trailblazer

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 2020/07/13

For enhanced safety, the front and middle seat shoulder belts of the Mercedes GLB have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The Chevrolet Trailblazer doesn’t offer pretensioners for the middle seat belts.

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

The GLB’s 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 Trailblazer doesn’t offer a driver alert monitor.

Both the GLB and the Trailblazer have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, side-impact head airbags, 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, lane departure warning systems and blind spot warning systems.

Warranty

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The GLB comes with a full 4-year/50,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The Trailblazer’s 3-year/36,000-mile basic warranty expires 1 year and 14,000 miles sooner.

The GLB’s corrosion warranty is unlimited miles longer than the Trailblazer’s (unlimited vs. 100,000 miles).

Reliability

© 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 2020/07/13

A hardened steel chain, with no maintenance needs, drives the camshafts in the GLB’s engine. A rubber cam drive belt that needs periodic replacement drives the Trailblazer’s camshafts. If the Trailblazer’s belt breaks, the engine could be severely damaged when the pistons hit the opened valves.

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

Engine

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The GLB’s 2.0 turbo 4-cylinder produces 84 more horsepower (221 vs. 137) and 96 lbs.-ft. more torque (258 vs. 162) than the Trailblazer’s standard 1.2 turbo 3-cylinder. The GLB’s 2.0 turbo 4-cylinder produces 66 more horsepower (221 vs. 155) and 84 lbs.-ft. more torque (258 vs. 174) than the Trailblazer’s optional 1.3 turbo 3-cylinder.

Fuel Economy and Range

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The GLB has 2.7 gallons more fuel capacity than the Trailblazer (15.9 vs. 13.2 gallons), for longer range between fill-ups.

Transmission

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The GLB offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is more internally efficient than a CVT but just as easy to drive. The Trailblazer doesn’t offer an SMG or a conventional manual transmission.

Brakes and Stopping

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

GLB

Trailblazer

Front Rotors

13 inches

11.81 inches

Rear Rotors

12.6 inches

10.39 inches

Tires and Wheels

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For better traction, the GLB has larger tires than the Trailblazer (235/55R18 vs. 215/65R16). The GLB’s tires are larger than the largest tires available on the Trailblazer (235/55R18 vs. 225/60R17).

The GLB’s standard tires provide better handling because they have a lower 55 series profile (height to width ratio) that provides a stiffer sidewall than the Trailblazer L’s standard 65 series tires. The GLB’s optional tires have a lower 50 series profile than the Trailblazer RS’ 55 series tires.

For better ride, handling and brake cooling the GLB has standard 18-inch wheels. Smaller 16-inch wheels are standard on the Trailblazer L. The GLB’s optional 20-inch wheels are larger than the 18-inch wheels on the Trailblazer RS.

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

Suspension and Handling

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For superior ride and handling, the Mercedes GLB 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 Chevrolet Trailblazer has a rear torsion beam axle, with a semi-independent rear suspension.

The GLB has standard front and rear stabilizer bars, which help keep the GLB flat and controlled during cornering. The Trailblazer’s suspension doesn’t offer a rear stabilizer bar.

The GLB offers an optional driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads or off-road. The Trailblazer’s suspension doesn’t offer adjustable shock absorbers.

The GLB’s 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 Trailblazer doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the GLB’s wheelbase is 7.5 inches longer than on the Trailblazer (111.4 inches vs. 103.9 inches).

For better handling and stability, the track (width between the wheels) on the GLB is 2.2 inches wider in the front and 1.9 inches wider in the rear than the average track on the Trailblazer.

Passenger Space

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The GLB offers optional seating for 7 passengers; the Trailblazer can only carry 5.

The GLB has .7 inches more front headroom, .2 inches more front legroom, .5 inches more front shoulder room, .9 inches more rear headroom and 1.1 inches more rear shoulder room than the Trailblazer.

For enhanced passenger comfort on long trips the GLB’s middle row seats recline. The Trailblazer’s rear seats don’t recline.

Cargo Capacity

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The GLB’s cargo area provides more volume than the Trailblazer.

GLB

Trailblazer

Second Seat Folded

62 cubic feet

54.4 cubic feet

A low lift-over cargo hatch design makes loading and unloading the GLB easier. The GLB’s cargo hatch lift-over height is 28.5 inches, while the Trailblazer’s liftover is 30.8 inches.

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

GLB

Trailblazer

Length to seat (2nd/1st)

32.5”/71”

32”/64.5”

Max Width

41.6”

54”

Min Width

41.6”

41”

Height

37.2”

28.2”

A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the GLB. The Trailblazer doesn’t offer locking storage for small valuables.

Servicing Ease

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J.D. Power and Associates surveys of service recipients show that Mercedes service is better than Chevrolet. J.D. Power ranks Mercedes fifth in service department satisfaction. With a 25% lower rating, Chevrolet is ranked 13th.

Ergonomics

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When three different drivers share the GLB, the memory seats and mirrors make it convenient for all three. Each setting activates different, customized memories for the driver and front passenger’s seat positions and outside mirror angle. The Trailblazer doesn’t offer a memory system.

The GLB’s standard easy entry system glides the driver’s seat back, making it easier for the driver to get in and out. The Trailblazer doesn’t offer an easy entry system.

The GLB offers an optional heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Trailblazer doesn’t offer a heads-up display.

The GLB’s front and rear power windows all open or close with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The Trailblazer’s passenger windows don’t close automatically.

If the windows are left open on the GLB the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Trailblazer can only operate the windows from inside the vehicle, with the ignition on.

The GLB’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 Trailblazer’s manually variable intermittent wipers have to be constantly adjusted.

To help drivers avoid possible obstacles, the GLB offers optional cornering lights to illuminate around corners when the turn signals are activated. The Trailblazer doesn’t offer cornering lights. The GLB also offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

The GLB’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Chevrolet only offers heated mirrors on the Trailblazer LT/ACTIV/RS.

When the GLB is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The Trailblazer’s mirror doesn’t automatically adjust for backing.

The GLB’s optional rear and side view mirrors have an automatic dimming feature. These mirrors can be set to automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The Trailblazer offers an automatic rear view mirror, but its side mirrors don’t dim.

Optional air-conditioned seats in the GLB keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The Trailblazer doesn’t offer air-conditioned seats.

On extremely cold winter days, the GLB’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the vehicle heater warms up. The Trailblazer doesn’t offer a heated steering wheel.

The GLB has a standard center folding armrest for the middle row passengers. A center armrest helps make middle row passengers more comfortable and it can provide a boundary between children. The Trailblazer L/LS doesn’t offer a rear seat center armrest.

The GLB offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the Trailblazer.

The GLB’s standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. The Trailblazer doesn’t offer dual zone air conditioning.

Both the GLB and the Trailblazer offer rear vents. For greater rear passenger comfort, the GLB has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The Trailblazer doesn’t offer rear air conditioning vents, only heat vents.

The GLB’s available GPS navigation system has a real-time traffic update feature that plots alternative routes to automatically bypass traffic problems. (Service not available in all areas.) The Trailblazer’s available navigation system doesn’t offer real-time traffic updates.

The GLB’s optional Active Parking Assist can parallel park by itself, stopping and changing direction automatically. The Trailblazer doesn’t offer an automated parking system.

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