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For enhanced safety, the front and rear seat shoulder belts of the Mercedes GLC Coupe have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Chevrolet Blazer doesn’t offer pretensioners for the rear seat belts.
The GLC Coupe’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Blazer doesn’t offer pre-crash pretensioners.
The GLC Coupe has standard NECK-PRO front head restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the NECK-PRO front head restraints system moves the headrests forward to prevent neck and spine injuries. The Blazer doesn’t offer a whiplash protection system.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the GLC Coupe. But it costs extra on the Blazer.
The GLC Coupe’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 Blazer doesn’t offer a driver alert monitor.
Both the GLC Coupe and the Blazer have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, height-adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.
The GLC Coupe comes with a full 4-year/50,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The Blazer’s 3-year/36,000-mile basic warranty expires 1 year and 14,000 miles sooner.
The GLC Coupe’s corrosion warranty is unlimited miles longer than the Blazer’s (unlimited vs. 100,000 miles).
J.D. Power and Associates rated the GLC Coupe third among compact premium suvs in their 2019 Initial Quality Study. The Blazer isn’t in the top three in its category.
From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Mercedes vehicles are more reliable than Chevrolet vehicles. Consumer Reports ranks Mercedes 6 places higher in reliability than Chevrolet.
The GLC Coupe’s 2.0 turbo 4 cyl. produces 62 more horsepower (255 vs. 193) and 85 lbs.-ft. more torque (273 vs. 188) than the Blazer’s standard 2.5 DOHC 4 cyl. The GLC Coupe’s 2.0 turbo 4 cyl. produces 25 more horsepower (255 vs. 230) and 15 lbs.-ft. more torque (273 vs. 258) than the Blazer’s optional 2.0 turbo 4 cyl. The GLC Coupe’s 2.0 turbo 4 cyl. produces 3 lbs.-ft. more torque (273 vs. 270) than the Blazer’s optional 3.6 DOHC V6.
On the EPA test cycle the GLC 300 Coupe gets better fuel mileage than the Blazer 4x4 V6 (21 city/28 hwy vs. 18 city/25 hwy).
For better stopping power the GLC Coupe’s brake rotors are larger than those on the Blazer:
The GLC Coupe’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the Blazer are solid, not vented.
The GLC Coupe’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 Blazer’s standard 65 series tires. The GLC Coupe’s optional 285/40R20 rear tires have a lower 40 series profile than the Blazer RS/Premier’s optional 45 series tires.
For better ride, handling and brake cooling the GLC Coupe has standard 19-inch wheels. Smaller 18-inch wheels are standard on the Blazer.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the GLC Coupe can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Blazer doesn’t offer run-flat tires.
The GLC Coupe has standard front and rear gas-charged shocks for better control over choppy roads. The Blazer’s suspension doesn’t offer gas-charged shocks.
The GLC Coupe’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 Blazer doesn’t offer drift compensation steering.
The GLC Coupe is 4.7 inches shorter than the Blazer, making the GLC Coupe easier to handle, maneuver and park in tight spaces.
The GLC Coupe’s standard towing capacity is much higher than the Blazer’s (3500 vs. 1500 pounds).
The engine in the GLC Coupe is mounted longitudinally (North-South), instead of sideways, as in the Blazer. This makes it easier to service and maintain, because there are no rear spark plugs and the accessory belts are in front.
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.
Unlike the driver-only memory system optional at extra cost in the Blazer (except L/LT), the GLC Coupe offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.
The GLC Coupe’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. An easy entry system costs extra on the Blazer, and is not available on all models.
The GLC Coupe 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 Blazer doesn’t offer a heads-up display.
The GLC Coupe’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 Blazer’s passenger windows don’t close automatically.
If the windows are left open on the GLC Coupe 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 also lower the windows the same way. The driver of the Blazer can only close the windows from inside the vehicle, with the ignition on.
The GLC Coupe’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 Blazer’s manually variable intermittent wipers have to be constantly adjusted.
Heated windshield washer nozzles are standard on the GLC Coupe to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The Blazer doesn’t offer heated windshield washer nozzles.
To help drivers see further while navigating curves, the GLC Coupe offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Blazer doesn’t offer cornering lights.
The GLC Coupe’s optional Active Parking Assist can parallel park or back into a parking spot by itself, starting and stopping automatically, with the driver only responsible for switching from reverse to drive. The Blazer doesn’t offer an automated parking system.
Motor Trend selected the GLC Coupe as their 2017 Sport Utility of the Year. The Blazer has never been chosen.
The Mercedes GLC outsold the Chevrolet Blazer by over two to one during the 2019 model year.
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