Compare 2017 BMW 6-Series vs 2017 Mercedes-Benz SL Class

2017 BMW 6-Series
2017 Mercedes-Benz SL Class
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640i Convertible
Style MPG City MPG Hwy Invoice MSRP
6 Series 640i Convertible 20 29 $79,645 $85,100
6 Series 640i Coupe 21 30 $72,670 $77,600
6 Series 640i Gran Coupe 20 29 $74,715 $79,800
6 Series 640i xDrive Convertible 19 28 $82,435 $88,100
6 Series 640i xDrive Coupe 19 28 $75,460 $80,600
6 Series 640i xDrive Gran Coupe 19 28 $77,505 $82,800
6 Series 650i Convertible 17 24 $90,245 $96,500
6 Series 650i Coupe 17 24 $83,270 $89,000
6 Series 650i Gran Coupe 17 24 $85,315 $91,200
6 Series 650i xDrive Convertible 15 24 $93,035 $99,500
6 Series 650i xDrive Coupe 16 24 $86,060 $92,000
6 Series 650i xDrive Gran Coupe 15 24 $88,105 $94,200
6 Series ALPINA B6 xDrive Gran Coupe 15 24 $114,425 $122,500
M6 Convertible 14 20 $112,100 $120,000
M6 Coupe 14 20 $106,240 $113,700
M6 Gran Coupe 14 20 $109,775 $117,500
Select style
AMG SL 63 Roadster
Style MPG City MPG Hwy Invoice MSRP
SL AMG SL 63 Roadster 16 25 $140,756 $151,350
SL AMG SL 65 Roadster 13 22 $204,461 $219,850
SL SL 450 Roadster 20 28 $80,864 $86,950
SL SL 550 Roadster 17 25 $103,044 $110,800
Pricing
Invoice Price
$79,645
$140,756
Manufacturer Suggested Retail Price
$85,100
$151,350
Monthly Payment Estimate
$1418 / month
$2523 / month
The Car Connection's Take
TCC Rating
6.8
7.8
TCC’s Bottom Line
The 2017 BMW 6-Series is a luxurious jack of all trades (speed, style, comfort, and quality) but a master of one: grand touring. The 2017 Mercedes-Benz SL-Class isn't quite a sports car, but it's a rapid, open-air touring coupe extraordinaire.
TCC Likes
TCC Dislikes
Fuel Economy
City
20 mpg 16 mpg
Highway
29 mpg 25 mpg
Vehicle
EPA Classification
Subcompact Cars Two-Seaters
Interior Dimensions
Front Shoulder Room (in)
56.9 55.5
Second Leg Room (in)
30.5 -
Passenger Capacity
4 2
Front Leg Room (in)
42.1 42.9
Second Head Room (in)
36.5 -
Second Shoulder Room (in)
49.6 -
Front Head Room (in)
40.3 39.1
Passenger Volume (ft³)
89 50.5
Front Hip Room (in)
- 53.6
Exterior Dimensions
Length, Overall (in)
192.8 182.7
Height, Overall (in)
53.7 51.2
Track Width, Rear (in)
65.2 63.2
Wheelbase (in)
112.4 101.7
Width, Max w/o mirrors (in)
74.6 73.9
Track Width, Front (in)
63 63.1
Min Ground Clearance (in)
4.8 -
Cargo Area Dimensions
Trunk Volume (ft³)
10.6 8.5
Brakes
Drum - Rear (Yes or )
NA NA
Brake ABS System
4-Wheel 4-Wheel
Disc - Rear (Yes or )
Yes Yes
Rear Brake Rotor Diam x Thickness (in)
13.6 14.2
Brake Type
4-Wheel Disc -
Rear Drum Diam x Width (in)
NA NA
Disc - Front (Yes or )
Yes Yes
Front Brake Rotor Diam x Thickness (in)
13.7 15.4
Fuel Tank
Fuel Tank Capacity, Approx (gal)
18.5 19.8
Steering
Steering Type
Rack-Pinion Rack-Pinion
Turning Diameter - Curb to Curb (ft)
38.4 36.4
Tires
Spare Tire Size
NA NA
Front Tire Order Code
NA R01
Spare Tire Order Code
NA NA
Rear Tire Size
P245/45VR18 P285/30YR19
Rear Tire Order Code
NA R01
Front Tire Size
P245/45VR18 P255/35YR19
Weight Information
Base Curb Weight (lbs)
4255 4068
Wheels
Rear Wheel Material
Aluminum Aluminum
Rear Wheel Size (in)
18 X 8 19 X 10
Front Wheel Material
Aluminum Aluminum
Spare Wheel Material
NA NA
Front Wheel Size (in)
18 X 8 19 X 9
Spare Wheel Size (in)
NA NA
Electrical
Maximum Alternator Capacity (amps)
210 -
Engine
Displacement
3.0 L/182 5.5 L/333
SAE Net Horsepower @ RPM
315 @ 5800 577 @ 5500
Engine Type
Intercooled Turbo Premium Unleaded I-6 Twin Turbo Premium Unleaded V-8
Fuel System
Gasoline Direct Injection Gasoline Direct Injection
SAE Net Torque @ RPM
330 @ 1400 664 @ 2250
Engine Order Code
NA NA
Mileage
Fuel Economy Est-Combined (MPG)
23 19
EPA Fuel Economy Est - Hwy (MPG)
29 25
EPA Fuel Economy Est - City (MPG)
20 16
Transmission
Final Drive Axle Ratio (:1)
3.23 2.65
Third Gear Ratio (:1)
2.11 1.92
Trans Type
8 7
Seventh Gear Ratio (:1)
0.84 0.73
Drivetrain
Rear Wheel Drive Rear Wheel Drive
Fifth Gear Ratio (:1)
1.28 1.00
Trans Description Cont. Again
NA NA
Reverse Ratio (:1)
3.29 3.42
Second Gear Ratio (:1)
3.14 2.86
Trans Order Code
2TB 427
Fourth Gear Ratio (:1)
1.67 1.37
Trans Description Cont.
Automatic w/OD Automatic w/OD
Eighth Gear Ratio (:1)
0.67 -
Sixth Gear Ratio (:1)
1.00 0.82
First Gear Ratio (:1)
4.71 4.38
Summary
Vehicle Name
BMW 6 Series Mercedes-Benz SL
Body Style
Convertible Roadster
Suspension
Suspension Type - Front (Cont.)
Double Wishbone Multi-Link
Suspension Type - Rear
Multi-Link Multi-Link
Suspension Type - Rear (Cont.)
Multi-Link Multi-Link
Suspension Type - Front
Double Wishbone Multi-Link
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
7.6 9.2

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