Compare 2020 BMW Z4 vs 2020 Mercedes-Benz SLC Class vs 2019 Porsche 718

2020 BMW Z4
X
2020 Mercedes-Benz SLC Class
X
2019 Porsche 718
X
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sDrive30i Roadster
Style MPG City MPG Hwy Invoice MSRP
Z4 sDrive30i Roadster 24 32 $46,720 $49,700
Z4 sDriveM40i Roadster 24 31 $59,740 $63,700
Select style
AMG SLC 43 Roadster
Style MPG City MPG Hwy Invoice MSRP
SLC AMG SLC 43 Roadster 20 29 $60,771 $64,650
SLC SLC 300 Roadster 23 32 $46,953 $49,950
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GTS Roadster
Style MPG City MPG Hwy Invoice MSRP
718 Boxster GTS Roadster 19 25 N/A $82,800
718 Boxster Roadster 21 28 N/A $59,000
718 Boxster S Roadster 20 26 N/A $71,400
718 Cayman Coupe 21 28 N/A $56,900
718 Cayman GTS Coupe 19 25 N/A $80,700
718 Cayman S Coupe 20 26 N/A $69,300
Pricing
Invoice Price
$46,720
$60,771
N/A
Manufacturer Suggested Retail Price
$49,700
$64,650
$82,800
Monthly Payment Estimate
$828 / month
$1078 / month
$1380 / month
The Car Connection's Take
TCC Rating
6.8
5.6
7.2
TCC’s Bottom Line
The 2020 BMW Z4 keeps alive the Sunday drive. The 2020 Mercedes-Benz SLC-Class sings a pretty swan song—and you can hear it even when the top’s down. The 2019 Porsche 718 may never be the champion of the automaker’s lineup, but it’s a champ everywhere else.
TCC Likes
TCC Dislikes
Fuel Economy
City
24 mpg 20 mpg 19 mpg
Highway
32 mpg 29 mpg 25 mpg
Vehicle
EPA Classification
Two-Seaters Two-Seaters Two-Seaters
Interior Dimensions
Front Head Room (in)
38.9 38 -
Passenger Capacity
2 2 2
Front Shoulder Room (in)
54.3 52.2 -
Front Leg Room (in)
42.2 42.5 -
Passenger Volume (ft³)
- 48.8 -
Exterior Dimensions
Width, Max w/o mirrors (in)
73.4 71.2 70.9
Track Width, Front (in)
63.7 61.1 60.1
Length, Overall (in)
170.7 163.1 173
Height, Overall (in)
51.4 51.3 50.1
Track Width, Rear (in)
63.5 61.7 60.4
Wheelbase (in)
97.2 95.7 97.4
Min Ground Clearance (in)
- 4.1 3.9
Cargo Area Dimensions
Trunk Volume (ft³)
9.9 6.5 9.7
Brakes
Front Brake Rotor Diam x Thickness (in)
NA 14.2 13
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)
NA 13 11.8
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
Fuel Tank
Fuel Tank Capacity, Approx (gal)
13.7 15.9 16.9
Steering
Turning Diameter - Curb to Curb (ft)
36.1 36.8 36.1
Steering Type
Rack-Pinion Rack-Pinion Rack-Pinion
Tires
Rear Tire Order Code
NA NA NA
Front Tire Size
P225/45VR18 P235/40YR18 P235/35ZR20
Spare Tire Size
NA NA NA
Front Tire Order Code
NA NA NA
Spare Tire Order Code
NA NA NA
Rear Tire Size
P255/40VR18 P255/35YR18 P265/35ZR20
Weight Information
Base Curb Weight (lbs)
3287 3527 3032
Wheels
Spare Wheel Size (in)
NA NA NA
Rear Wheel Material
Aluminum Aluminum Aluminum
Rear Wheel Size (in)
18 X 9 18 X 9 20 X 10
Front Wheel Material
Aluminum Aluminum Aluminum
Spare Wheel Material
NA NA NA
Front Wheel Size (in)
18 X 8 18 X 8 20 X 8
Electrical
Maximum Alternator Capacity (amps)
170 - -
Engine
SAE Net Torque @ RPM
295 @ 1550 384 @ 2500 309 @ 1900
Engine Order Code
NA NA NA
Displacement
2.0 L/122 3.0 L/183 2.5 L/152
SAE Net Horsepower @ RPM
255 @ 5000 385 @ 6100 365 @ 6500
Engine Type
Intercooled Turbo Premium Unleaded I-4 Twin Turbo Premium Unleaded V-6 Intercooled Turbo Premium Unleaded H-4
Fuel System
Gasoline Direct Injection Gasoline Direct Injection Gasoline Direct Injection
Mileage
Fuel Economy Est-Combined (MPG)
27 23 21
EPA Fuel Economy Est - Hwy (MPG)
32 29 25
EPA Fuel Economy Est - City (MPG)
24 20 19
Transmission
Seventh Gear Ratio (:1)
0.82 0.86 -
Drivetrain
Rear Wheel Drive Rear Wheel Drive Rear Wheel Drive
Sixth Gear Ratio (:1)
1.00 1.00 0.81
First Gear Ratio (:1)
5.25 5.35 3.31
Final Drive Axle Ratio (:1)
3.15 2.82 3.89
Third Gear Ratio (:1)
2.17 2.25 1.41
Trans Type
8 9 6
Fifth Gear Ratio (:1)
1.32 1.21 0.95
Trans Description Cont. Again
NA NA NA
Eighth Gear Ratio (:1)
0.64 0.72 -
Reverse Ratio (:1)
3.71 4.80 3.00
Second Gear Ratio (:1)
3.36 3.24 1.95
Trans Order Code
2TB NA 480
Fourth Gear Ratio (:1)
1.72 1.64 1.13
Trans Description Cont.
Automatic w/OD Automatic w/OD Manual w/OD
Summary
Body Style
Roadster Roadster Convertible
Vehicle Name
BMW Z4 Mercedes-Benz SLC Porsche 718 Boxster
Suspension
Suspension Type - Front
Strut Strut Strut
Suspension Type - Front (Cont.)
Strut Strut Strut
Suspension Type - Rear
Multi-Link Multi-Link Strut
Suspension Type - Rear (Cont.)
Multi-Link Multi-Link Strut
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
6.6 7.7 8.4
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