2020 Infiniti QX50 vs. 2020 Mercedes GLC Coupe

Detailed Review, Specifications & Comparison

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Safety

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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 GLC Coupe doesn’t offer backup collision prevention brakes.

Both the QX50 and the GLC Coupe have standard driver and passenger frontal airbags, front 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, 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 GLC Coupe’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 GLC Coupe. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the GLC Coupe ends after only 4 years or 50,000 miles.

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

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 QX50’s reliability 21 points higher than the GLC Coupe.

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 13 more horsepower (268 vs. 255) and 7 lbs.-ft. more torque (280 vs. 273) than the GLC Coupe’s 2.0 turbo 4-cylinder.

As tested in Motor Trend the Infiniti QX50 is faster than the Mercedes GLC Coupe:

QX50

GLC Coupe

Zero to 60 MPH

6.3 sec

6.7 sec

Quarter Mile

14.8 sec

15.2 sec

Speed in 1/4 Mile

93.6 MPH

89.6 MPH

Fuel Economy and Range

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On the EPA test cycle the QX50 AWD CVT gets better fuel mileage than the GLC 300 Coupe (22 city/28 hwy vs. 21 city/28 hwy).

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 GLC Coupe doesn’t offer a CVT.

Brakes and Stopping

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The QX50 stops much shorter than the GLC Coupe:

QX50

GLC Coupe

60 to 0 MPH

121 feet

137 feet

Motor Trend

Tires and Wheels

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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 GLC Coupe doesn’t offer vehicle monitored tire inflation.

Suspension and Handling

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The QX50 Essential AWD handles at .84 G’s, while the GLC 300 Coupe pulls only .79 G’s of cornering force in a Motor Trend skidpad test.

The QX50 Essential AWD executes Motor Trend’s “Figure Eight” maneuver quicker than the GLC 300 Coupe (26.7 seconds @ .66 average G’s vs. 27.6 seconds @ .63 average G’s).

For better maneuverability, the QX50’s turning circle is 2.3 feet tighter than the GLC 300 Coupe’s (36.4 feet vs. 38.7 feet).

Chassis

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The Infiniti QX50 may be more efficient, handle and accelerate better because it weighs up to about 200 pounds less than the Mercedes GLC Coupe.

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

Passenger Space

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The QX50 has 2.1 inches more front headroom, .6 inches more front shoulder room, .8 inches more rear headroom, 1.5 inches more rear legroom and 1.3 inches more rear shoulder room than the GLC Coupe.

Cargo Capacity

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The QX50 has a much larger cargo volume with its rear seat up than the GLC Coupe with its rear seat up (31.4 vs. 17.6 cubic feet). The QX50 has a much larger cargo volume with its rear seat folded than the GLC Coupe with its rear seat folded (65.1 vs. 49.4 cubic feet).

Servicing Ease

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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 wiper. The GLC Coupe doesn’t offer a rear wiper.

Model Availability

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The QX50 is available in both front-wheel drive and four-wheel drive configurations. The GLC Coupe doesn’t offer a two-wheel drive configuration.

Economic Advantages

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The QX50 will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the QX50 will retain 47.09% to 47.54% of its original price after five years, while the GLC Coupe only retains 40.57%.

According to The Car Book by Jack Gillis, the QX50 is less expensive to operate than the GLC Coupe because it costs $473 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the QX50 than the GLC Coupe, including $94 less for a water pump, $150 less for a muffler, $165 less for front brake pads, $125 less for a starter, $240 less for fuel injection, $24 less for a fuel pump and $4186 less for front struts.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Infiniti QX50 will be $9190 to $16232 less than for the Mercedes GLC Coupe.

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 2020/07/06

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

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