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Compare 2017 BMW 4-Series vs 2017 Porsche 718

2017 BMW 4-Series
2017 Porsche 718
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430i Convertible SULEV
Style MPG City MPG Hwy Invoice MSRP
4 Series 430i Convertible SULEV 23 34 $47,280 $50,300
4 Series 430i Coupe SULEV 23 34 $39,700 $42,150
4 Series 430i Gran Coupe SULEV 23 34 $39,515 $41,950
4 Series 430i xDrive Convertible SULEV 22 32 $49,140 $52,300
4 Series 430i xDrive Coupe SULEV 23 33 $41,560 $44,150
4 Series 430i xDrive Gran Coupe SULEV 23 33 $41,375 $43,950
4 Series 440i Convertible 21 29 $53,790 $57,300
4 Series 440i Coupe 21 32 $45,605 $48,500
4 Series 440i Gran Coupe 21 32 $45,420 $48,300
4 Series 440i xDrive Convertible 20 30 $55,650 $59,300
4 Series 440i xDrive Coupe 21 31 $47,465 $50,500
4 Series 440i xDrive Gran Coupe 21 31 $47,280 $50,300
M4 Convertible 17 26 $69,970 $74,700
M4 Coupe 17 26 $62,065 $66,200
Select style
Roadster
Style MPG City MPG Hwy Invoice MSRP
718 Boxster Roadster 21 28 N/A $56,000
718 Boxster S Roadster 20 26 N/A $68,400
718 Cayman Coupe 21 28 N/A $53,900
718 Cayman S Coupe 20 26 N/A $66,300
Pricing
Invoice Price
$47,280
N/A
Manufacturer Suggested Retail Price
$50,300
$56,000
Monthly Payment Estimate
$838 / month
$933 / month
The Car Connection's Take
TCC Rating
6.6
8.2
TCC’s Bottom Line
The 2017 BMW M4 is a near-perfect performance coupe that can be hugely rewarding to competent drivers. The 2017 Porsche 718 Boxster and Cayman remains some of our favorite performance cars; they're thrilling to drive, and in base form they're exceptional sports car value, too.
TCC Likes
TCC Dislikes
Fuel Economy
City
23 mpg 21 mpg
Highway
34 mpg 28 mpg
Vehicle
EPA Classification
Subcompact Cars Two-Seaters
Interior Dimensions
Front Shoulder Room (in)
55.3 -
Second Leg Room (in)
33.1 -
Passenger Capacity
4 2
Front Leg Room (in)
42.2 -
Second Head Room (in)
37.1 -
Second Shoulder Room (in)
49.8 -
Front Head Room (in)
40.4 -
Exterior Dimensions
Length, Overall (in)
182.6 172.4
Height, Overall (in)
54.5 50.4
Track Width, Rear (in)
62.8 60.3
Wheelbase (in)
110.6 97.4
Width, Max w/o mirrors (in)
71.9 70.9
Track Width, Front (in)
60.8 59.6
Cargo Area Dimensions
Trunk Volume (ft³)
7.8 9.7
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)
11.8 11.8
Brake Type
4-Wheel Disc 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 13
Fuel Tank
Fuel Tank Capacity, Approx (gal)
15.8 14.3
Steering
Steering Type
Rack-Pinion Rack-Pinion
Turning Diameter - Curb to Curb (ft)
37.1 36
Tires
Spare Tire Size
NA NA
Front Tire Order Code
NA NA
Spare Tire Order Code
NA NA
Rear Tire Size
P225/45VR18 P265/45ZR18
Rear Tire Order Code
NA NA
Front Tire Size
P225/45VR18 P235/45ZR18
Weight Information
Base Curb Weight (lbs)
3995 2944
Wheels
Rear Wheel Material
Aluminum Aluminum
Rear Wheel Size (in)
18 X 8 18 X 9.5
Front Wheel Material
Aluminum Aluminum
Spare Wheel Material
NA NA
Front Wheel Size (in)
18 X 8 18 X 8
Spare Wheel Size (in)
NA NA
Electrical
Cold Cranking Amps @ 0° F (Primary)
900 -
Maximum Alternator Capacity (amps)
170 -
Engine
Fuel System
Gasoline Direct Injection Gasoline Direct Injection
SAE Net Torque @ RPM
258 @ 1450 280 @ 1950
Engine Order Code
NA NA
Displacement
2.0 L/122 2.0 L/121
SAE Net Horsepower @ RPM
248 @ 5200 300 @ 6500
Engine Type
Intercooled Turbo Premium Unleaded I-4 Intercooled Turbo Premium Unleaded H-4
Mileage
EPA Fuel Economy Est - City (MPG)
23 21
Fuel Economy Est-Combined (MPG)
27 24
EPA Fuel Economy Est - Hwy (MPG)
34 28
Transmission
Fourth Gear Ratio (:1)
1.67 1.13
Trans Description Cont.
Automatic w/OD Manual w/OD
Eighth Gear Ratio (:1)
0.67 -
Drivetrain
Rear Wheel Drive Rear Wheel Drive
Sixth Gear Ratio (:1)
1.00 0.81
First Gear Ratio (:1)
4.71 3.31
Final Drive Axle Ratio (:1)
3.15 3.89
Third Gear Ratio (:1)
2.11 1.41
Trans Type
8 6
Seventh Gear Ratio (:1)
0.84 NA
Fifth Gear Ratio (:1)
1.28 0.95
Trans Description Cont. Again
NA NA
Reverse Ratio (:1)
3.29 3.00
Second Gear Ratio (:1)
3.14 1.95
Trans Order Code
2TB 480
Summary
Vehicle Name
BMW 4 Series Porsche 718 Boxster
Body Style
Convertible Convertible
Suspension
Suspension Type - Front (Cont.)
Strut Strut
Suspension Type - Rear
Multi-Link Strut
Suspension Type - Rear (Cont.)
Multi-Link Strut
Suspension Type - Front
Strut Strut
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
6.6 7.3

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