Certified Benz & Beemer Compares 2015 Audi Q7 VS 2014 Mercedes GL-Class Near Scottsdale, AZ

Responsive image

2015 Audi Q7

Responsive image

2014 Mercedes GL-Class

Safety Comparison

For enhanced safety, the front and middle seat shoulder belts of the Audi Q7 are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Mercedes GL-Class doesn’t offer height-adjustable middle seat belts.

Both the Q7 and GL-Class have child safety locks to prevent children from opening the rear doors. The Q7 has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The GL-Class’ child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

Both the Q7 and the GL-Class have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, height-adjustable front shoulder belts, four-wheel antilock brakes, all-wheel drive, traction control and electronic stability systems to prevent skidding.

Warranty Comparison

The Q7’s corrosion warranty is 8 years and unlimited miles longer than the GL-Class’ (12/unlimited vs. 4/50,000).

Reliability Comparison

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without their vehicle while it’s being repaired. Consumer Reports predicts that the Q7’s reliability will be 66% better than the GL-Class.

J.D. Power and Associates’ 2014 Initial Quality Study of new car owners surveyed provide the statistics that show that Audi vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks Audi 11th in initial quality, above the industry average. With 4 more problems per 100 vehicles, Mercedes is ranked 13th.

Fuel Economy and Range Comparison

On the EPA test cycle the Q7 TDI gets better fuel mileage than the GL350 BlueTEC (19 city/28 hwy vs. 19 city/26 hwy).

On the EPA test cycle the Q7 gets better fuel mileage than the GL-Class:




16 city/22 hwy

14 city/19 hwy


3.0TFSI Prestige/Auto

16 city/22 hwy

13 city/18 hwy


Brakes and Stopping Comparison

The Q7 stops shorter than the GL-Class:



70 to 0 MPH

170 feet

179 feet

Car and Driver

60 to 0 MPH

118 feet

122 feet

Motor Trend

Tires and Wheels Comparison

The Q7 Prestige’s optional tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the GL550/GL63 AMG’s 40 series tires.

Suspension and Handling Comparison

The Q7 3.0 TFSI Prestige handles at .85 G’s, while the GL450 pulls only .74 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the Q7’s turning circle is 1.3 feet tighter than the GL-Class’ (39.4 feet vs. 40.7 feet).

Chassis Comparison

The Audi Q7 may be more efficient, handle and accelerate better because it weighs about 150 to 200 pounds less than the Mercedes GL-Class.

The design of the Audi Q7 amounts to more than styling. The Q7 has an aerodynamic coefficient of drag of .37 Cd (optional .35 Cd with w/Air suspension). That is lower than the GL-Class (.369 to .377). A more efficient exterior helps keep the interior quieter and helps the Q7 get better fuel mileage.

Passenger Space Comparison

The Q7 has 1 inch more front legroom and .2 inches more front shoulder room than the GL-Class.

Ergonomics Comparison

Heated windshield washer nozzles are standard on the Q7 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The GL-Class doesn’t offer heated windshield washer nozzles.

A manual rear sunshade is optional in the Q7 to help block heat and glare for the rear passengers. The GL-Class doesn’t offer a rear sunshade.

Economic Advantages Comparison

Insurance will cost less for the Q7 owner. The Complete Car Cost Guide estimates that insurance for the Q7 will cost $1465 less than the GL-Class over a five-year period.

The Q7 will cost the buyer less in the long run because of its superior resale value. The Intellichoice estimates that the Q7 will retain 51.6% to 53.44% of its original price after five years, while the GL-Class only retains 42.57% to 48.29%.

According to The Car Book by Jack Gillis, the Q7 is less expensive to operate than the GL-Class because it costs $341 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the Q7 than the GL-Class, including $264 less for a water pump, $161 less for front brake pads and $632 less for a power steering pump.

Intellichoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Audi Q7 will be $12357 to $56260 less than for the Mercedes GL-Class.

© 1991-2016 Advanta-STAR Automotive Research. All rights reserved. Who We Are
Click here to view the disclaimers, limitations and notices about EPA fuel mileage, crash tests, coprights, trademarks, and other issues.