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The E-Class Wagon’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 Q7 doesn’t offer a driver alert monitor.
Both the E-Class Wagon and the Q7 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, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.
There are over 26 percent more Mercedes dealers than there are Audi dealers, which makes it easier should you ever need service under the E-Class Wagon’s warranty.
To reliably power the ignition and other systems and to recharge the battery, the E-Class Wagon has a 180-amp alternator. The Q7’s standard 120-amp alternator isn’t as powerful.
To reliably start during all conditions and help handle large electrical loads, the E-Class Wagon has a standard 850-amp battery. The Q7’s 380-amp battery isn’t as powerful.
J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Audi vehicles. J.D. Power ranks Mercedes 14th in initial quality, above the industry average. With 13 more problems per 100 vehicles, Audi is ranked 25th, below the industry average.
The E-Class Wagon’s 3.0 turbo V6 produces 110 more horsepower (362 vs. 252) and 96 lbs.-ft. more torque (369 vs. 273) than the Q7 2.0T’s standard 2.0 turbo 4 cyl. The E-Class Wagon’s 3.0 turbo V6 produces 29 more horsepower (362 vs. 333) and 44 lbs.-ft. more torque (369 vs. 325) than the Q7 3.0T’s standard 3.0 supercharged V6.
On the EPA test cycle the E 400 4MATIC Wagon gets better fuel mileage than the Q7 (19 city/26 hwy vs. 19 city/25 hwy).
In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes E-Class Wagon higher (5 out of 10) than the Audi Q7 (3). This means the E-Class Wagon produces up to 16.5 pounds less smog-producing pollutants than the Q7 every 15,000 miles.
A nine-speed automatic is standard on the Mercedes E-Class Wagon, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Q7.
The E-Class Wagon stops much shorter than the Q7:
70 to 0 MPH
Car and Driver
60 to 0 MPH
The E-Class Wagon’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the Q7 2.0T’s standard 60 series tires.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the E-Class Wagon can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. Run-flat tires aren’t available on some tire packages on the Q7.
The rear suspension of the E-Class Wagon uses air springs for a smoother, controlled ride than the Q7, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.
The E-Class Wagon has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The E-Class Wagon’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The Q7 doesn’t offer a load leveling suspension.
The E-Class Wagon’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 Q7 doesn’t offer drift compensation steering.
The E-Class Wagon’s front to rear weight distribution is more even (51.7% to 48.3%) than the Q7’s (55% to 45%). This gives the E-Class Wagon more stable handling and braking.
The E 400 4MATIC Wagon handles at .87 G’s, while the Q7 Prestige pulls only .85 G’s of cornering force in a Car and Driver skidpad test.
The E 400 4MATIC Wagon executes Motor Trend’s “Figure Eight” maneuver quicker than the Q7 Prestige (25.7 seconds @ .73 average G’s vs. 26.5 seconds @ .67 average G’s).
For better maneuverability, the E-Class Wagon’s turning circle is 1.7 feet tighter than the Q7’s (39 feet vs. 40.7 feet).
The Mercedes E-Class Wagon may be more efficient, handle and accelerate better because it weighs about 400 to 800 pounds less than the Audi Q7.
The E-Class Wagon is 5.4 inches shorter than the Q7, making the E-Class Wagon easier to handle, maneuver and park in tight spaces.
The E-Class Wagon is 6.2 inches narrower than the Q7, making the E-Class Wagon easier to handle and maneuver in traffic.
The E-Class Wagon is 10.8 inches shorter in height than the Q7, making the E-Class Wagon much easier to wash and garage and drive (lower center of gravity).
The E-Class Wagon has a standard third row seat which folds flat into the floor. This completely clears a very large cargo area quickly. The Q7 doesn’t offer seats that fold into the floor.
Unlike the driver-only memory system in the Q7, the E-Class Wagon has standard driver and 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.
Heated windshield washer fluid is standard on the E-Class Wagon to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The Q7 doesn’t offer heated windshield washer fluid.
The E-Class Wagon offers an optional 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The Q7 doesn’t offer a house-current electrical outlet.
The E-Class Wagon’s optional Active Parking Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Q7 doesn’t offer an automated parking system.
The Mercedes E-Class comes in coupe, convertible, sedan and station wagon bodystyles; the Audi Q7 isn’t available as a coupe, convertible or sedan.
According to The Car Book by Jack Gillis, the E-Class Wagon is less expensive to operate than the Q7 because it costs $63 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the E-Class Wagon than the Q7, including $81 less for front brake pads, $180 less for a starter, $243 less for fuel injection, $417 less for front struts and $271 less for a timing belt/chain.
The Mercedes E-Class outsold the Audi Q7 by 18% during the 2018 model year.
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