Compare 2015 BMW 6-Series vs 2015 Mercedes-Benz SL Class vs 2015 Porsche 911

2015 BMW 6-Series
X
2015 Mercedes-Benz SL Class
X
2015 Porsche 911
X
Select style
2-Door Conv 640i RWD
Style MPG City MPG Hwy Invoice MSRP
6 Series 2-Door Conv 640i RWD 20 31 $77,410 $83,600
6 Series 2-Door Conv 640i xDrive AWD 20 29 $80,170 $86,600
6 Series 2-Door Conv 650i RWD 17 25 $87,810 $94,900
6 Series 2-Door Conv 650i xDrive AWD 16 24 $90,570 $97,900
6 Series 2-Door Coupe 640i RWD 21 32 $70,510 $76,100
6 Series 2-Door Coupe 640i xDrive AWD 20 29 $73,270 $79,100
6 Series 2-Door Coupe 650i RWD 17 25 $80,910 $87,400
6 Series 2-Door Coupe 650i xDrive AWD 16 25 $83,670 $90,400
6 Series 4-Door Sedan 640i RWD Gran Coupe 20 31 $72,535 $78,300
6 Series 4-Door Sedan 640i xDrive AWD Gran Coupe 20 29 $75,295 $81,300
6 Series 4-Door Sedan 650i RWD Gran Coupe 17 25 $82,930 $89,600
6 Series 4-Door Sedan 650i xDrive AWD Gran Coupe 16 24 $85,690 $92,600
6 Series 4-Door Sedan ALPINA B6 xDrive AWD Gran Coupe 16 24 $108,415 $117,300
M6 2-Door Conv 14 20 $109,245 $118,200
M6 2-Door Coupe 14 20 $103,450 $111,900
M6 4-Door Gran Coupe 14 20 $106,945 $115,700
Select style
2-Door Roadster SL 400
Style MPG City MPG Hwy Invoice MSRP
SL-Class 2-Door Roadster SL 400 20 27 $78,120 $84,000
SL-Class 2-Door Roadster SL 550 17 24 $99,417 $106,900
SL-Class 2-Door Roadster SL 63 AMG 16 25 $137,687 $148,050
SL-Class 2-Door Roadster SL 65 AMG 14 21 $200,183 $215,250
Select style
2-Door Convertible Carrera
Style MPG City MPG Hwy Invoice MSRP
911 2-Door Convertible Carrera 19 27 N/A $96,200
911 2-Door Convertible Carrera 4 19 26 N/A $102,930
911 2-Door Convertible Carrera 4 GTS 18 25 N/A $132,800
911 2-Door Convertible Carrera 4S 18 26 N/A $117,530
911 2-Door Convertible Carrera GTS 18 25 N/A $126,100
911 2-Door Convertible Carrera S 19 27 N/A $110,800
911 2-Door Convertible Turbo 17 24 N/A $163,000
911 2-Door Convertible Turbo S 17 24 N/A $194,600
911 2-Door Coupe Carrera 19 27 N/A $84,300
911 2-Door Coupe Carrera 4 19 27 N/A $91,030
911 2-Door Coupe Carrera 4 GTS 18 26 N/A $120,900
911 2-Door Coupe Carrera 4S 18 26 N/A $105,630
911 2-Door Coupe Carrera GTS 18 26 N/A $114,200
911 2-Door Coupe Carrera S 19 27 N/A $98,900
911 2-Door Coupe GT3 15 20 N/A $130,400
911 2-Door Coupe Turbo 17 24 N/A $151,100
911 2-Door Coupe Turbo S 17 24 N/A $182,700
911 2-Door Targa 4 18 26 N/A $101,600
911 2-Door Targa 4S 18 26 N/A $116,200
Pricing
Invoice Price
$77,410
$78,120
N/A
Manufacturer Suggested Retail Price
$83,600
$84,000
$96,200
Monthly Payment Estimate
$1393 / month
$1400 / month
$1603 / month
The Car Connection's Take
TCC Rating
8.4
8.2
9.0
TCC’s Bottom Line
Whether chosen as a coupe, convertible, or four-door Gran Coupe, the 2015 BMW 6-Series offers dynamic driving and massive style. The 2015 Mercedes-Benz SL-Class is sportier than its predecessor, but still manages to coddle its occupants just as before. The 2015 Porsche 911 is an enthusiast's dream, with excellent handling, comfort, and performance at every step through its range.
TCC Likes
TCC Dislikes
Fuel Economy
City
20 mpg 20 mpg 19 mpg
Highway
31 mpg 27 mpg 27 mpg
Vehicle
EPA Classification
Subcompact Cars Two-Seaters Minicompact Cars
Interior Dimensions
Passenger Volume (ft³)
89 - -
Front Shoulder Room (in)
56.9 55.5 -
Second Leg Room (in)
30.5 - -
Passenger Capacity
4 2 4
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 -
Front Hip Room (in)
- 53.6 -
Exterior Dimensions
Min Ground Clearance (in)
4.8 - -
Length, Overall (in)
192.8 181.6 176.8
Height, Overall (in)
53.7 51.8 51.3
Track Width, Rear (in)
65.2 63 59.8
Wheelbase (in)
112.4 101.8 96.5
Width, Max w/o mirrors (in)
74.6 73.9 71.2
Track Width, Front (in)
63 62.9 60.3
Cargo Area Dimensions
Trunk Volume (ft³)
10.6 8.5 -
Brakes
Drum - Rear (Yes or )
NA NA NA
Brake ABS System
4-Wheel 4-Wheel 4-Wheel
Disc - Rear (Yes or )
Yes Yes Yes
Rear Brake Rotor Diam x Thickness (in)
13.6 12.6 13
Brake Type
4-Wheel Disc 4-Wheel Disc 4-Wheel Disc
Rear Drum Diam x Width (in)
NA NA NA
Disc - Front (Yes or )
Yes Yes Yes
Front Brake Rotor Diam x Thickness (in)
13.7 14.2 13
Fuel Tank
Fuel Tank Capacity, Approx (gal)
18.5 19.8 16.9
Steering
Steering Type
Rack-Pinion Rack-Pinion Rack-Pinion
Turning Diameter - Curb to Curb (ft)
38.4 36.2 36.4
Tires
Front Tire Size
P245/45VR18 P255/40YR18 P235/40YR19
Spare Tire Size
NA NA NA
Front Tire Order Code
NA NA NA
Spare Tire Order Code
NA NA NA
Rear Tire Size
P245/45VR18 P285/35YR18 P285/35YR19
Rear Tire Order Code
NA NA NA
Weight Information
Base Curb Weight (lbs)
4255 - 3197
Wheels
Spare Wheel Size (in)
NA NA NA
Rear Wheel Material
Aluminum Aluminum Aluminum
Rear Wheel Size (in)
18 X 8 18 X 9.5 19 X 11
Front Wheel Material
Aluminum Aluminum Aluminum
Spare Wheel Material
NA NA NA
Front Wheel Size (in)
18 X 8 18 X 8.5 19 X 8.5
Electrical
Maximum Alternator Capacity (amps)
210 - 175
Cold Cranking Amps @ 0° F (Primary)
- - 450
Engine
Engine Order Code
NA NA NA
Displacement
3.0 L/182 3.0 L/183 3.4 L/210
SAE Net Horsepower @ RPM
315 @ 5800 329 @ 5250 350 @ 7400
Engine Type
Intercooled Turbo Premium Unleaded I-6 Twin Turbo Premium Unleaded V-6 Premium Unleaded H-6
Fuel System
Gasoline Direct Injection Gasoline Direct Injection Gasoline Direct Injection
SAE Net Torque @ RPM
330 @ 1400 354 @ 1600 287 @ 5600
Mileage
Fuel Economy Est-Combined (MPG)
24 23 22
EPA Fuel Economy Est - Hwy (MPG)
31 27 27
EPA Fuel Economy Est - City (MPG)
20 20 19
Transmission
Final Drive Axle Ratio (:1)
3.23 2.65 3.44
Third Gear Ratio (:1)
2.11 1.92 1.55
Trans Type
8 7 7
Seventh Gear Ratio (:1)
0.84 0.73 0.71
Drivetrain
Rear Wheel Drive Rear Wheel Drive Rear Wheel Drive
Fifth Gear Ratio (:1)
1.29 1.00 1.08
Trans Description Cont. Again
NA NA NA
Reverse Ratio (:1)
3.29 3.42 3.55
Second Gear Ratio (:1)
3.14 2.86 2.29
Trans Order Code
2TB 427 487
Fourth Gear Ratio (:1)
1.67 1.37 1.30
Trans Description Cont.
Automatic w/OD Automatic w/OD Manual w/OD
Eighth Gear Ratio (:1)
0.67 - -
Sixth Gear Ratio (:1)
1.00 0.82 0.88
First Gear Ratio (:1)
4.71 4.38 3.91
Summary
Vehicle Name
BMW 6 Series Mercedes-Benz SL-Class Porsche 911
Body Style
Convertible Roadster Cabriolet
Suspension
Suspension Type - Front (Cont.)
Double Wishbone Multi-Link Strut
Suspension Type - Rear
Multi-Link Multi-Link Multi-Link
Suspension Type - Rear (Cont.)
Multi-Link Multi-Link Multi-Link
Suspension Type - Front
Double Wishbone Multi-Link Strut
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
7.4 - 8.0

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