2019 Mercedes E-Class Sedan vs. 2019 BMW 6 Series Gran Coupe

Detailed Review, Specifications & Comparison

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Safety

For enhanced safety, the front and rear seat shoulder belts of the Mercedes E-Class Sedan have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The BMW 6 Series Gran Coupe doesn’t offer pretensioners for the rear seat belts.

For enhanced safety, the front seat shoulder belts of the Mercedes E-Class Sedan 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 6 Series Gran Coupe doesn’t offer height-adjustable seat belts.

The rear seatbelts optional on the E-Class Sedan inflate when a collision is detected, helping to spread crash forces over a much larger area of the body and limiting head and neck movement. This can help prevent spinal and internal injuries. The 6 Series Gran Coupe doesn’t offer inflatable seatbelts.

To help make backing safer, the E-Class Sedan’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 6 Series Gran Coupe doesn’t offer a cross-path warning system.

Both the E-Class Sedan and the 6 Series Gran Coupe 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, driver alert monitors, available all wheel drive, lane departure warning systems, blind spot warning systems and around view monitors.

For its top level performance in IIHS driver-side small overlap frontal, moderate overlap frontal, side impact, rear impact and roof-crush tests, its standard front crash prevention system, its “Good” rating in the new passenger-side small overlap crash test, and its headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the E-Class Sedan its highest rating: “Top Pick Plus” for 2018, a rating granted to only 28 vehicles tested by the IIHS. The 6 Series Gran Coupe has not been tested, yet.

Warranty

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 Sedan’s warranty.

Reliability

To reliably power the ignition and other systems and to recharge the battery, the E-Class Sedan has a 180-amp alternator. The 6 Series Gran Coupe’s standard 170-amp alternator isn’t as powerful.

Fuel Economy and Range

On the EPA test cycle the AMG E 53 Sedan gets better fuel mileage than the 640i Gran Coupe xDrive (21 city/28 hwy vs. 19 city/28 hwy).

On the EPA test cycle the E 450 4MATIC Sedan 4MATIC gets better fuel mileage than the 640i Gran Coupe xDrive (20 city/28 hwy vs. 19 city/28 hwy).

Environmental Friendliness

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes E-Class Sedan higher (5 out of 10) than the BMW 6 Series Gran Coupe (1 to 3). This means the E-Class Sedan produces up to 39 pounds less smog-producing pollutants than the 6 Series Gran Coupe every 15,000 miles.

Transmission

A nine-speed automatic is standard on the Mercedes E-Class Sedan, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the 6 Series Gran Coupe.

Brakes and Stopping

The E-Class Sedan stops much shorter than the 6 Series Gran Coupe:

 

E-Class

6 Series

 

70 to 0 MPH

154 feet

170 feet

Car and Driver

60 to 0 MPH

106 feet

108 feet

Motor Trend

Suspension and Handling

The E-Class Sedan 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 Sedan’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 6 Series Gran Coupe doesn’t offer a load leveling suspension.

The E-Class Sedan’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 6 Series Gran Coupe doesn’t offer drift compensation steering.

The E-Class Sedan 4MATIC handles at .92 G’s, while the 640i Gran Coupe pulls only .89 G’s of cornering force in a Car and Driver skidpad test.

The E-Class Sedan 4MATIC executes Motor Trend’s “Figure Eight” maneuver quicker than the 650i Gran Coupe (25.1 seconds @ .77 average G’s vs. 25.5 seconds @ .77 average G’s).

For better maneuverability, the E-Class Sedan’s turning circle is tighter than the 6 Series Gran Coupe’s:

 

E-Class

6 Series

 

E 300

38.2 feet

39.2 feet

 

E 450

39 feet

41 feet

M6

Chassis

The Mercedes E-Class Sedan may be more efficient, handle and accelerate better because it weighs about 350 to 650 pounds less than the BMW 6 Series Gran Coupe.

The E-Class Sedan is 3.4 inches shorter than the 6 Series Gran Coupe, making the E-Class Sedan easier to handle, maneuver and park in tight spaces.

As tested by Car and Driver while cruising at 70 MPH, the interior of the E 300 Sedan 4MATIC is quieter than the 640i Gran Coupe (67 vs. 69 dB).

Passenger Space

Because it has more passenger and cargo room, the EPA rates the E-Class Sedan a Mid-size car, while the 6 Series Gran Coupe is rated a Compact.

The E-Class Sedan has 1.1 inches more front shoulder room, 1.2 inches more rear headroom, .9 inches more rear legroom and 2.5 inches more rear shoulder room than the 6 Series Gran Coupe.

Cargo Capacity

The E-Class Sedan has a much larger trunk than the 6 Series Gran Coupe with its rear seat up (13.1 vs. 12 cubic feet).

To make loading and unloading groceries and cargo easier when your hands are full, the E-Class Sedan’s power trunk can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The 6 Series Gran Coupe doesn’t offer a power or hands-free opening trunk.

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.

Ergonomics

The E-Class Sedan 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 6 Series Gran Coupe doesn’t offer a remote starting system.

Heated windshield washer fluid is standard on the E-Class Sedan to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The 6 Series Gran Coupe doesn’t offer heated windshield washer fluid.

To better shield the driver and front passenger’s vision, the E-Class Sedan has standard dual-element sun visors that can block glare from two directions simultaneously. The 6 Series Gran Coupe doesn’t offer secondary sun visors.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the E-Class Sedan has standard extendable sun visors. The 6 Series Gran Coupe doesn’t offer extendable visors.

The E-Class Sedan 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 6 Series Gran Coupe 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 6 Series isn’t available as a coupe, convertible or station wagon.

Economic Advantages

Insurance will cost less for the E-Class Sedan owner. The Complete Car Cost Guide estimates that insurance for the E-Class Sedan will cost $1955 to $8615 less than the 6 Series Gran Coupe over a five-year period.

The E-Class Sedan will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the E-Class Sedan will retain 38.57% to 39.14% of its original price after five years, while the 6 Series Gran Coupe only retains 36.57% to 37.86%.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Mercedes E-Class Sedan will be $23178 to $43159 less than for the BMW 6 Series Gran Coupe.

Recommendations

Consumer Reports® recommends the Mercedes E-Class Sedan, based on reliability, safety and performance.

The E-Class was chosen as one of Car and Driver’s “Top Ten” in 2018. The 6 Series Gran Coupe has never been a Car and Driver “Top Ten” pick.

The Mercedes E-Class outsold the BMW 6 Series by over 11 to one during the 2018 model year.

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

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