2019 Infiniti QX30 vs. 2019 Mercedes GLC Coupe

Detailed Review, Specifications & Comparison

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Safety

Both the QX30 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, lane departure warning systems and around view monitors.

Warranty

The QX30 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 QX30 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 QX30’s corrosion warranty is 2 years longer than the GLC Coupe’s (7 vs. 5 years).

Reliability

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 QX30’s reliability 16 points higher than the GLC Coupe.

J.D. Power and Associates’ 2018 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 fourth in reliability, above the industry average. With 27 more problems per 100 vehicles, Mercedes is ranked 15th.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Infiniti vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Infiniti 11 places higher in reliability than Mercedes.

Engine

As tested in Motor Trend the Infiniti QX30 is faster than the GLC 300 Coupe:

 

QX30

GLC Coupe

Zero to 60 MPH

6.3 sec

6.7 sec

Quarter Mile

14.9 sec

15.2 sec

Speed in 1/4 Mile

93.7 MPH

89.6 MPH

Fuel Economy and Range

On the EPA test cycle the QX30 gets better fuel mileage than the GLC Coupe:

 

 

 

MPG

QX30

 

FWD

2.0 turbo 4 cyl.

24 city/33 hwy

 

AWD

2.0 turbo 4 cyl.

21 city/30 hwy

GLC

 

AWD

300 2.0 turbo 4 cyl.

21 city/27 hwy

 

 

AMG 43 2.0 turbo 4 cyl.

18 city/24 hwy

Transmission

The QX30 offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The GLC Coupe doesn’t offer an SMG or a conventional manual transmission.

Brakes and Stopping

The QX30 stops much shorter than the GLC Coupe:

 

QX30

GLC Coupe

 

60 to 0 MPH

106 feet

137 feet

Motor Trend

Tires and Wheels

The QX30’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the GLC Coupe’s standard 55 series tires.

Suspension and Handling

The QX30 Sport handles at .88 G’s, while the GLC 300 Coupe pulls only .79 G’s of cornering force in a Motor Trend skidpad test.

The QX30 Sport executes Motor Trend’s “Figure Eight” maneuver 1.5 seconds quicker than the GLC 300 Coupe (26.1 seconds @ .71 average G’s vs. 27.6 seconds @ .63 average G’s).

For better maneuverability, the QX30 AWD’s turning circle is 2.1 feet tighter than the GLC 300 Coupe’s (36.6 feet vs. 38.7 feet). The QX30’s turning circle is 1.4 feet tighter than the GLC 300 Coupe’s (37.3 feet vs. 38.7 feet).

Chassis

The Infiniti QX30 may be more efficient, handle and accelerate better because it weighs about 650 to 750 pounds less than the Mercedes GLC Coupe.

The QX30 is 1 foot shorter than the GLC Coupe, making the QX30 easier to handle, maneuver and park in tight spaces.

To almost totally eliminate engine vibration in the passenger area, the QX30 has a liquid-filled front engine mount. The liquid helps further dampen engine harshness. The GLC Coupe uses conventional solid rubber engine mounts.

Cargo Capacity

The QX30 has a much larger cargo volume than the GLC Coupe with its rear seat up (19.2 vs. 17.6 cubic feet).

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Infiniti service is better than Mercedes. J.D. Power ranks Infiniti first in service department satisfaction. With a 8% lower rating, Mercedes is ranked 6th.

Model Availability

The QX30 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

Insurance will cost less for the QX30 owner. The Complete Car Cost Guide estimates that insurance for the QX30 will cost $670 less than the GLC Coupe over a five-year period.

The QX30 will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the QX30 will retain 53.6% to 54.72% of its original price after five years, while the GLC Coupe only retains 45.7% to 47.57%.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Infiniti QX30 will be $16014 to $23195 less than for the Mercedes GLC Coupe.

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

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