Compare 2021 BMW 8-Series vs 2021 Mercedes-Benz AMG GT vs 2021 Porsche 911

2021 BMW 8-Series
#6 in Coupes
X
2021 Mercedes-Benz AMG GT
#3 in Coupes
X
2021 Porsche 911
X
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840i Convertible
Style MPG City MPG Hwy Invoice MSRP
8 Series 840i Convertible 22 29 $91,080 $97,400
8 Series 840i Coupe 23 30 $82,340 $88,000
8 Series 840i Gran Coupe 22 29 $79,550 $85,000
8 Series 840i xDrive Convertible 20 27 $93,780 $100,300
8 Series 840i xDrive Coupe 20 27 $85,035 $90,900
8 Series 840i xDrive Gran Coupe 20 27 $82,245 $87,900
8 Series M850i xDrive Convertible 17 24 $113,400 $121,400
8 Series M850i xDrive Coupe 17 25 $104,565 $111,900
8 Series M850i xDrive Gran Coupe 17 24 $101,775 $108,900
M8 Gran Coupe 15 21 $121,400 $130,000
Select style
AMG GT 43 4-Door Coupe
Style MPG City MPG Hwy Invoice MSRP
AMG GT AMG GT 43 4-Door Coupe 20 25 $84,506 $89,900
AMG GT AMG GT 53 4-Door Coupe 20 25 $93,953 $99,950
AMG GT AMG GT 63 4-Door Coupe 16 21 $132,164 $140,600
AMG GT AMG GT 63 S 4-Door Coupe 16 21 $152,186 $161,900
AMG GT AMG GT Black Series Coupe 15 20 $305,500 $325,000
AMG GT AMG GT C Coupe 15 19 $144,290 $153,500
AMG GT AMG GT C Roadster 15 20 $155,194 $165,100
AMG GT AMG GT Coupe 15 20 $111,484 $118,600
AMG GT AMG GT R Coupe 14 20 $155,664 $165,600
AMG GT AMG GT Roadster 15 20 $122,858 $130,700
Select style
Carrera 4 Convertible
Style MPG City MPG Hwy Invoice MSRP
911 Carrera 4 Convertible 18 24 N/A $119,300
911 Carrera 4 Coupe 18 24 N/A $106,500
911 Carrera 4S Convertible 18 23 N/A $135,200
911 Carrera 4S Coupe 18 23 N/A $122,400
911 Carrera Convertible 18 24 N/A $112,000
911 Carrera Coupe 18 24 N/A $99,200
911 Carrera S Convertible 18 23 N/A $127,900
911 Carrera S Coupe 18 23 N/A $115,100
911 Targa 4 18 24 N/A $119,300
911 Targa 4S 18 23 N/A $135,200
911 Targa 4S Heritage Design Edition 18 23 N/A $180,600
911 Turbo Convertible 15 20 N/A $183,600
911 Turbo Coupe 15 20 N/A $170,800
911 Turbo S Convertible 15 20 N/A $216,300
911 Turbo S Coupe 15 20 N/A $203,500
Pricing
Invoice Price
$91,080
$84,506
Coming Soon
Manufacturer Suggested Retail Price
$97,400
$89,900
$119,300
Monthly Payment Estimate
$1623 / month
$1498 / month
$1988 / month
The Car Connection's Take
TCC Rating
7.0
7.2
7.2
TCC’s Bottom Line
The 2021 BMW 8-Series is a gorgeous statement piece that strikes an enviable balance between performance and usability. The 2021 Mercedes-Benz AMG GT 4-Door Coupe is a worthy rival for the best performance sedans on the market. The 2021 Porsche 911 bristles with pavement-conquering confidence, and brims with tech and luxe touches.
TCC Likes
TCC Dislikes
Fuel Economy
City
22 mpg 20 mpg 18 mpg
Highway
29 mpg 25 mpg 24 mpg
Vehicle
EPA Classification
Subcompact Cars Compact Cars Minicompact Cars
Interior Dimensions
Front Head Room (in)
38.9 40.8 -
Front Shoulder Room (in)
57.2 57.8 -
Second Leg Room (in)
29.5 - -
Passenger Capacity
4 4 4
Front Leg Room (in)
42.1 - -
Second Head Room (in)
34.7 38.2 -
Second Shoulder Room (in)
45.7 57.2 -
Second Hip Room (in)
- 58.6 -
Front Hip Room (in)
- 58.9 -
Exterior Dimensions
Min Ground Clearance (in)
4.6 4.6 -
Length, Overall (in)
191.1 199.2 177.9
Height, Overall (in)
52.7 57.3 51.1
Track Width, Rear (in)
64.6 65.6 61.2
Wheelbase (in)
111.1 116.2 96.5
Width, Max w/o mirrors (in)
74.9 76.9 72.9
Track Width, Front (in)
64.1 65.9 62.7
Cargo Area Dimensions
Trunk Volume (ft³)
12.4 - -
Brakes
Brake ABS System
4-Wheel 4-Wheel 4-Wheel
Disc - Rear (Yes or )
Yes Yes Yes
Brake Type
4-Wheel Disc 4-Wheel Disc 4-Wheel Disc
Disc - Front (Yes or )
Yes Yes Yes
Drum - Rear (Yes or )
NA NA NA
Rear Drum Diam x Width (in)
- NA NA
Front Brake Rotor Diam x Thickness (in)
- 14.2 13
Rear Brake Rotor Diam x Thickness (in)
- 14.2 13
Fuel Tank
Fuel Tank Capacity, Approx (gal)
18 21.1 17.6
Steering
Steering Type
Rack-Pinion Rack-Pinion Rack-Pinion
Turning Diameter - Curb to Curb (ft)
38.2 - 36.8
Tires
Spare Tire Size
NA NA NA
Front Tire Order Code
258 R01 NA
Spare Tire Order Code
NA NA NA
Rear Tire Size
P275/40VR18 P285/40ZR19 P295/35YR20
Rear Tire Order Code
258 R01 NA
Front Tire Size
P245/45VR18 P255/45ZR19 P235/40YR19
Weight Information
Base Curb Weight (lbs)
4211 4530 3614
Wheels
Rear Wheel Material
Aluminum Aluminum Aluminum
Rear Wheel Size (in)
18 X 9 19 X 11 20 X 11.5
Front Wheel Material
Aluminum Aluminum Aluminum
Spare Wheel Material
NA NA NA
Front Wheel Size (in)
18 X 8 19 X 9.5 19 X 8.5
Spare Wheel Size (in)
NA NA NA
Engine
Engine Type
Intercooled Turbo Premium Unleaded I-6 Intercooled Turbo Gas/Electric I-6 Twin Turbo Premium Unleaded H-6
Fuel System
Gasoline Direct Injection Gasoline Direct Injection Gasoline Direct Injection
SAE Net Torque @ RPM
368 @ 1600 369 @ 1600 331 @ 1950
Engine Order Code
NA NA NA
Displacement
3.0 L/183 3.0 L/183 3.0 L/182
SAE Net Horsepower @ RPM
335 @ 5000 362 @ 5500 379 @ 6500
Mileage
EPA Fuel Economy Est - City (MPG)
22 20 18
Fuel Economy Est-Combined (MPG)
25 22 20
EPA Fuel Economy Est - Hwy (MPG)
29 25 24
Transmission
Second Gear Ratio (:1)
3.36 3.24 3.17
Trans Order Code
2TB NA G1G
Fourth Gear Ratio (:1)
1.72 1.64 1.56
Trans Description Cont.
Automatic w/OD Automatic w/OD Auto-Shift Manual w/OD
Seventh Gear Ratio (:1)
0.82 0.86 0.76
Drivetrain
Rear Wheel Drive All Wheel Drive All Wheel Drive
Sixth Gear Ratio (:1)
1.00 1.00 0.94
First Gear Ratio (:1)
5.25 5.35 4.89
Final Drive Axle Ratio (:1)
2.93 3.27 3.39
Third Gear Ratio (:1)
2.17 2.25 2.15
Trans Type
8 9 8
Fifth Gear Ratio (:1)
1.32 1.21 1.18
Trans Description Cont. Again
NA NA NA
Eighth Gear Ratio (:1)
0.64 0.72 0.61
Reverse Ratio (:1)
3.71 4.80 3.99
Summary
Vehicle Name
BMW 8 Series Mercedes-Benz AMG GT Porsche 911
Body Style
Convertible Hatchback Cabriolet
Suspension
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
Suspension Type - Front (Cont.)
Double Wishbone Multi-Link Strut
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
7.1 8.0 8.8
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