2019 Infiniti QX30 vs. 2019 Mercedes GLC

Detailed Review, Specifications & Comparison

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Both the QX30 and the GLC 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.


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’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. 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 ends after only 4 years or 50,000 miles.

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


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.

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.


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




Zero to 60 MPH

6.3 sec

6.9 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:








2.0 turbo 4 cyl.

24 city/33 hwy



2.0 turbo 4 cyl.

21 city/30 hwy




300 2.0 turbo 4 cyl.

22 city/27 hwy



300 2.0 turbo 4 cyl.

22 city/27 hwy


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 doesn’t offer an SMG or a conventional manual transmission.

Brakes and Stopping

The QX30 stops much shorter than the GLC:





60 to 0 MPH

106 feet

126 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’s standard 60 series tires.

Suspension and Handling

The QX30 Sport handles at .88 G’s, while the GLC 300 4MATIC pulls only .80 G’s of cornering force in a Motor Trend skidpad test.

The QX30 Sport executes Motor Trend’s “Figure Eight” maneuver 1.2 seconds quicker than the GLC 300 4MATIC (26.1 seconds @ .71 average G’s vs. 27.3 seconds @ .65 average G’s).

For better maneuverability, the QX30 AWD’s turning circle is 2.1 feet tighter than the GLC’s (36.6 feet vs. 38.7 feet). The QX30’s turning circle is 2.4 feet tighter than the AMG GLC 43’s (37.3 feet vs. 39.7 feet).

For greater off-road capability the QX30 has a 3 inches greater minimum ground clearance than the GLC 300 (8 vs. 5 inches), allowing the QX30 to travel over rougher terrain without being stopped or damaged. The QX30’s minimum ground clearance is 1.3 inches higher than on the AMG GLC 43 (8 vs. 6.7 inches).


The Infiniti QX30 may be more efficient, handle and accelerate better because it weighs about 600 to 650 pounds less than the Mercedes GLC.

The QX30 is 9.1 inches shorter than the GLC 300, 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 uses conventional solid rubber engine mounts.

As tested by Car and Driver while under full throttle, the interior of the QX30 Essential AWD is quieter than the AMG GLC 43 (76 vs. 80 dB).

Passenger Space

The QX30 has .6 inches more front headroom and .5 inches more front legroom than the GLC.

The front step up height for the QX30 is 3.6 inches lower than the GLC (16.4” vs. 20”). The QX30’s rear step up height is 5.3 inches lower than the GLC’s (17.2” vs. 22.5”).

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.


Heated windshield washer nozzles are standard on the QX30 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. Heated windshield washer nozzles cost extra on the GLC.

Economic Advantages

Insurance will cost less for the QX30 owner. The Complete Car Cost Guide estimates that insurance for the QX30 will cost $970 less than the GLC 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 only retains 46.24% to 49.68%.

According to The Car Book by Jack Gillis, the QX30 is less expensive to operate than the GLC because it costs $342 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the QX30 than the GLC, including $101 less for a water pump, $143 less for a muffler, $160 less for front brake pads, $238 less for a starter, $169 less for fuel injection, $57 less for a fuel pump and $186 less for front struts.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Infiniti QX30 will be $10068 to $22125 less than for the Mercedes GLC.

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

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