2019 Audi A7 vs. 2019 Mercedes E-Class Sedan

Detailed Review, Specifications & Comparison

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Safety

Both the A7 and E-Class Sedan have child safety locks to prevent children from opening the rear doors. The A7 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 E-Class Sedan’s 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.

The A7 has a standard Secondary Collision Brake Assist, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The E-Class Sedan doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the A7. But it costs extra on the E-Class Sedan.

A passive infrared night vision system optional on the A7 Prestige helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The E-Class Sedan doesn’t offer a night vision system.

Both the A7 and the E-Class Sedan 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 lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

Warranty

The A7’s corrosion warranty is 7 years longer than the E-Class Sedan’s (12 vs. 5 years).

Reliability

J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Audi vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Audi 13th in reliability, above the industry average. With 6 more problems per 100 vehicles, Mercedes is ranked 15th.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Audi vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Audi 10 places higher in reliability than Mercedes.

Engine

The A7’s 3.0 turbo V6 hybrid produces 94 more horsepower (335 vs. 241) and 96 lbs.-ft. more torque (369 vs. 273) than the E 300 Sedan’s standard 2.0 turbo 4 cyl.

As tested in Car and Driver the Audi A7 is faster than the E 300 Sedan:

 

A7

E-Class

Zero to 30 MPH

1.7 sec

2.2 sec

Zero to 60 MPH

4.7 sec

6.5 sec

Zero to 80 MPH

7.8 sec

11.2 sec

Zero to 100 MPH

12.1 sec

17.7 sec

5 to 60 MPH Rolling Start

5.5 sec

7.3 sec

Passing 30 to 50 MPH

2.9 sec

3.9 sec

Passing 50 to 70 MPH

3.7 sec

5 sec

Quarter Mile

13.3 sec

15 sec

Speed in 1/4 Mile

105 MPH

92 MPH

Top Speed

130 MPH

129 MPH

Fuel Economy and Range

On the EPA test cycle the A7 gets better fuel mileage than the E-Class Sedan:

 

 

 

MPG

A7

 

Quattro

3.0 turbo V6 Hybrid

22 city/29 hwy

E-Class

 

AWD

300 2.0 turbo 4 cyl.

21 city/29 hwy

 

 

450 3.0 turbo V6

20 city/28 hwy

 

 

AMG 53 3.0 turbo 6 cyl.

21 city/28 hwy

To lower fuel costs and make buying fuel easier, the Audi A7 uses regular unleaded gasoline (premium recommended for maximum performance). The E-Class Sedan requires premium, which can cost 20 to 55 cents more per gallon.

The A7 has 1.9 gallons more fuel capacity than the E-Class Sedan 300’s standard fuel tank (19.3 vs. 17.4 gallons), for longer range between fill-ups.

The A7 has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The E-Class Sedan doesn’t offer a cap-less fueling system.

Transmission

The A7 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 E-Class Sedan doesn’t offer an SMG or a conventional manual transmission.

The A7’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The E-Class Sedan doesn’t offer launch control.

Tires and Wheels

For better traction, the A7’s optional tires are larger than the largest tires available on the E-Class Sedan (255/40R20 vs. 245/40R19).

The A7 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 E-Class Sedan’s optional 40 series front tires.

For better ride, handling and brake cooling the A7 has standard 19-inch wheels. Smaller 18-inch wheels are standard on the E-Class Sedan. The A7 Prestige’s optional 21-inch wheels are larger than the 19-inch wheels optional on the E-Class Sedan.

The A7 has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the E-Class Sedan; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed. Some models of the E-Class Sedan don’t even offer run-flats.

Suspension and Handling

For better handling and stability, the track (width between the wheels) on the A7 is 1.6 inches wider in the front and 1.3 inches wider in the rear than the average track on the E-Class Sedan.

For better maneuverability, the A7’s turning circle is 1.8 feet tighter than the E-Class Sedan’s (36.4 feet vs. 38.2 feet). The A7’s turning circle is 2.6 feet tighter than the E 450 4MATIC Sedan’s (36.4 feet vs. 39 feet).

Chassis

As tested by Car and Driver, the interior of the A7 Prestige is quieter than the E 300 Sedan 4MATIC:

 

A7

E-Class

At idle

38 dB

38 dB

Full-Throttle

73 dB

76 dB

70 MPH Cruising

66 dB

67 dB

Passenger Space

For enhanced passenger comfort on long trips the A7’s rear seats recline. The E-Class Sedan’s rear seats don’t recline.

Cargo Capacity

The A7 has a much larger trunk than the E-Class Sedan (24.9 vs. 13.1 cubic feet).

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Audi service is better than Mercedes. J.D. Power ranks Audi third in service department satisfaction. With a 3% lower rating, Mercedes is ranked 6th.

Ergonomics

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The A7 Premium Plus/Prestige has standard headlight washers to keep headlight output high. The E-Class Sedan doesn’t offer headlight washers.

The A7 has standard heated front seats. Heated front seats cost extra on the E-Class Sedan. The A7 also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the E-Class Sedan.

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

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