2019 Mercedes E-Class Wagon vs. 2018 BMW X6

Detailed Review, Specifications & Comparison

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For enhanced safety, the front and middle seat shoulder belts of the Mercedes E-Class Wagon have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The BMW X6 doesn’t offer pretensioners for the middle seat belts.

For enhanced safety, the front seat shoulder belts of the Mercedes E-Class Wagon 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 BMW X6 doesn’t offer height-adjustable seat belts.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the E-Class Wagon. But it costs extra on the X6.

To help make backing safer, the E-Class Wagon’s optional cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The X6 doesn’t offer a cross-path warning system.

Both the E-Class Wagon and the X6 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available lane departure warning systems, blind spot warning systems and around view monitors.


There are over 10 percent more Mercedes dealers than there are BMW dealers, which makes it easier should you ever need service under the E-Class Wagon’s warranty.


The E-Class Wagon’s 3.0 turbo V6 produces 62 more horsepower (362 vs. 300) and 69 lbs.-ft. more torque (369 vs. 300) than the X6 s/xDrive35i’s standard 3.0 turbo 6 cyl.

Fuel Economy and Range

On the EPA test cycle the E 400 4MATIC Wagon gets better fuel mileage than the X6 xDrive35i (19 city/26 hwy vs. 18 city/24 hwy).

Environmental Friendliness

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 BMW X6 (3). This means the E-Class Wagon produces up to 16.5 pounds less smog-producing pollutants than the X6 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 X6.

Brakes and Stopping

For better stopping power the E-Class Wagon’s standard brake rotors are larger than those on the X6:


E-Class Wagon


Front Rotors

14.2 inches

13.7 inches

Rear Rotors

14.2 inches

12.6 inches

Tires and Wheels

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 X6’s standard 50 series tires.

Suspension and Handling

The rear suspension of the E-Class Wagon uses air springs for a smoother, controlled ride than the X6, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

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 X6 doesn’t offer drift compensation steering.

The E 400 4MATIC Wagon handles at .90 G’s, while the X6 xDrive35i pulls only .88 G’s of cornering force in a Motor Trend skidpad test.

The E 400 4MATIC Wagon executes Motor Trend’s “Figure Eight” maneuver quicker than the X6 xDrive35i (25.7 seconds @ .73 average G’s vs. 26.1 seconds @ .71 average G’s).

For better maneuverability, the E-Class Wagon’s turning circle is 3 feet tighter than the X6’s (39 feet vs. 42 feet).


The Mercedes E-Class Wagon may be more efficient, handle and accelerate better because it weighs about 300 to 800 pounds less than the BMW X6.

The E-Class Wagon is 7 inches narrower than the X6, making the E-Class Wagon easier to handle and maneuver in traffic.

The E-Class Wagon is 9.3 inches shorter in height than the X6, making the E-Class Wagon much easier to wash and garage and drive (lower center of gravity).

Passenger Space

The E-Class Wagon has standard seating for 7 passengers; the X6 can only carry 5.

The E-Class Wagon has 1.2 inches more front legroom, 1.7 inches more rear headroom and .2 inches more rear legroom than the X6.

Cargo Capacity

The E-Class Wagon’s cargo area provides more volume than the X6.




Third Seat Removed

35 cubic feet

26.6 cubic feet

Second Seat Folded

64 cubic feet

59.7 cubic feet

Pressing a switch automatically lowers the E-Class Wagon’s second row seats, to make changing between passengers and cargo easier. The X6 doesn’t offer automatic folding seats.

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Mercedes service is better than BMW. J.D. Power ranks Mercedes 6th in service department satisfaction (above the industry average). With a 11% lower rating, BMW is ranked 8th.


The E-Class Wagon has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The X6 doesn’t offer a remote starting system.

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 X6 doesn’t offer heated windshield washer fluid. Its standard heated washer nozzles will defrost the washer fluid but not the windshield.

To improve rear visibility by keeping the rear window clear, the E-Class Wagon has a standard rear wiper. The X6 doesn’t offer a rear wiper.

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 X6 doesn’t offer a house-current electrical outlet.

Model Availability

The Mercedes E-Class comes in coupe, convertible, sedan and station wagon bodystyles; the BMW X6 isn’t available as a coupe, convertible or sedan.

Economic Advantages

Insurance will cost less for the E-Class Wagon owner. The Complete Car Cost Guide estimates that insurance for the E-Class Wagon will cost $1870 to $2935 less than the X6 over a five-year period.

According to The Car Book by Jack Gillis, the E-Class Wagon is less expensive to operate than the X6 because it costs $90 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the E-Class Wagon than the X6, including $399 less for a water pump, $507 less for a muffler, $148 less for front brake pads, $293 less for a fuel pump, $180 less for front struts and $1237 less for a power steering pump.


The Mercedes E-Class outsold the BMW X6 by over six to one during the 2018 model year.

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

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