2019 Rolls-Royce Dawn vs. 2018 BMW 6 Series

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/18

Both the Dawn and the 6 Series have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, post-collision automatic braking systems, daytime running lights, rearview cameras, driver alert monitors, available night vision systems and lane departure warning systems.

The Rolls-Royce Dawn weighs 563 to 953 pounds more than the BMW 6 Series. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

Warranty

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/18

The Dawn comes with a full 4-year/unlimited-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The 6 Series’ 4-year/50,000-mile basic warranty expires sooner.

Rolls-Royce pays for scheduled maintenance on the Dawn for 1 year and -36,000 miles longer than BMW pays for maintenance for the 6 Series (4/unlimited vs. 3/36,000).

Reliability

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/18

To reliably power the ignition and other systems and to recharge the battery, the Dawn has a standard 220-amp alternator. The 6 Series’ 210-amp alternator isn’t as powerful.

Engine

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/18

The Dawn has more powerful engines than the 6 Series:

 

Horsepower

Torque

Dawn 6.6 turbo V12

563 HP

605 lbs.-ft.

Dawn Black Label 6.6 turbo V12

593 HP

620 lbs.-ft.

640i 3.0 turbo 6 cyl.

315 HP

332 lbs.-ft.

650i 4.4 turbo V8

445 HP

480 lbs.-ft.

M6 4.4 turbo V8

552 HP

500 lbs.-ft.

M6 Competition 4.4 turbo V8

600 HP

516 lbs.-ft.

As tested in Car and Driver the Rolls-Royce Dawn (base engine) is faster than the 640i (automatics tested):

 

Dawn

6 Series

Zero to 60 MPH

4.3 sec

4.9 sec

Zero to 80 MPH

6.7 sec

8.2 sec

Zero to 100 MPH

9.9 sec

12.7 sec

5 to 60 MPH Rolling Start

5.1 sec

5.9 sec

Passing 30 to 50 MPH

2.6 sec

2.9 sec

Passing 50 to 70 MPH

3.2 sec

3.5 sec

Quarter Mile

12.8 sec

13.6 sec

Speed in 1/4 Mile

114 MPH

103 MPH

Fuel Economy and Range

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/18

The Dawn has 3.4 gallons more fuel capacity than the 6 Series’ standard fuel tank (21.9 vs. 18.5 gallons), for longer range between fill-ups.

Brakes and Stopping

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For better stopping power the Dawn’s standard brake rotors are larger than those on the 6 Series:

 

Dawn

6 Series

Front Rotors

14.7 inches

13.7 inches

Rear Rotors

14.6 inches

13.6 inches

The Dawn stops shorter than the 6 Series:

 

Dawn

6 Series

 

70 to 0 MPH

162 feet

168 feet

Car and Driver

Tires and Wheels

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For better traction, the Dawn has larger tires than the 6 Series (F:255/45R20 & R:285/40R20 vs. 245/45R18).

The Dawn’s standard 285/40R20 rear tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the 640i’s standard 45 series tires.

For better ride, handling and brake cooling the Dawn has standard 20-inch wheels. Smaller 18-inch wheels are standard on the 640i. The Dawn’s optional 21-inch wheels are larger than the 20-inch wheels optional on the 6 Series.

Suspension and Handling

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The Dawn has active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The 6 Series doesn’t offer an active sway bar system.

The front and rear suspension of the Dawn uses air springs for a smoother, controlled ride than the 6 Series, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The Dawn has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The 6 Series doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the Dawn’s wheelbase is 10.3 inches longer than on the M6 (122.5 inches vs. 112.2 inches).

For better handling and stability, the track (width between the wheels) on the Dawn is 1.4 inches wider in the front and .5 inches wider in the rear than the average track on the 6 Series.

Chassis

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As tested by Car and Driver, the interior of the Dawn is quieter than the M6 Convertible:

 

Dawn

6 Series

At idle

43 dB

52 dB

Full-Throttle

72 dB

87 dB

70 MPH Cruising

61 dB

73 dB

Passenger Space

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/18

Because it has more passenger and cargo room, the EPA rates the Dawn a Compact car, while the 6 Series is rated a Subcompact.

The Dawn has 12 cubic feet more passenger volume than the 6 Series (100 vs. 88).

The Dawn has 2.1 inches more front shoulder room, .5 inches more rear headroom, 6.5 inches more rear legroom and 5.1 inches more rear shoulder room than the 6 Series.

Cargo Capacity

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To make loading and unloading groceries and cargo easier when your hands are full, the Dawn’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 doesn’t offer a power or hands-free opening trunk.

Ergonomics

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/18

Both the Dawn and the 6 Series have standard heated front seats. The Dawn also has standard heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the 6 Series.

Both the Dawn and the 6 Series offer rear vents. For greater rear passenger comfort, the Dawn has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The 6 Series doesn’t offer rear air conditioning vents, only heat vents.

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

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