Compare 2015 BMW M3 vs 2015 Porsche Cayman

2015 BMW M3
2015 Porsche Cayman
Add Vehicle
Select style
4-Door Sedan
Style MPG City MPG Hwy Invoice MSRP
4-Door Sedan 17 26 $57,540 $62,000
Select style
2-Door Coupe
Style MPG City MPG Hwy Invoice MSRP
2-Door Coupe 20 30 N/A $52,600
2-Door Coupe S 20 28 N/A $63,800
2-Door Coupe GTS 19 26 N/A $75,200
Pricing
Invoice Price
$57,540
N/A
Manufacturer Suggested Retail Price
$62,000
$52,600
Monthly Payment Estimate
$1033 / month
$877 / month
The Car Connection's Take
TCC Rating
8.8
9.0
TCC’s Bottom Line
Minus the V-8 and almost a couple hundred pounds, the 2015 BMW M3 is the best performer yet to wear the vaunted badge. The 2015 Porsche Cayman remains a focused 911 alternative, at an easier-to-swallow price.
TCC Likes
TCC Dislikes
Fuel Economy
City
17 mpg 20 mpg
Highway
26 mpg 30 mpg
Vehicle
EPA Classification
Compact Cars Two-Seaters
Interior Dimensions
Second Shoulder Room (in)
55.1 -
Front Head Room (in)
40.3 -
Front Shoulder Room (in)
55.1 -
Second Leg Room (in)
35.1 -
Passenger Capacity
5 2
Front Leg Room (in)
42 -
Second Head Room (in)
37.7 -
Passenger Volume (ft³)
- 48
Exterior Dimensions
Length, Overall (in)
184.5 172.4
Height, Overall (in)
56.1 50.9
Track Width, Rear (in)
63.1 60.5
Wheelbase (in)
110.7 97.4
Width, Max w/o mirrors (in)
73.9 70.9
Track Width, Front (in)
62.2 60.1
Min Ground Clearance (in)
- 4.3
Cargo Area Dimensions
Trunk Volume (ft³)
12 -
Brakes
Front Brake Rotor Diam x Thickness (in)
15 12.4
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)
14.6 11.8
Brake Type
4-Wheel Disc 4-Wheel Disc
Rear Drum Diam x Width (in)
NA NA
Disc - Front (Yes or )
Yes Yes
Fuel Tank
Fuel Tank Capacity, Approx (gal)
15.9 16.9
Steering
Turning Diameter - Curb to Curb (ft)
40 36.4
Steering Type
Rack-Pinion Rack-Pinion
Tires
Front Tire Size
P255/40YR18 P235/45ZR18
Spare Tire Size
NA NA
Front Tire Order Code
NA NA
Spare Tire Order Code
NA NA
Rear Tire Size
P275/40YR18 P265/45ZR18
Rear Tire Order Code
NA NA
Weight Information
Base Curb Weight (lbs)
3540 2888
Wheels
Spare Wheel Size (in)
NA NA
Rear Wheel Material
Forged Aluminum Aluminum
Rear Wheel Size (in)
18 X 10 18 X 9
Front Wheel Material
Forged Aluminum Aluminum
Spare Wheel Material
NA NA
Front Wheel Size (in)
18 X 9 18 X 8
Electrical
Cold Cranking Amps @ 0° F (Primary)
900 340
Maximum Alternator Capacity (amps)
210 120
Engine
Engine Type
Twin Turbo Premium Unleaded I-6 Premium Unleaded H-6
Fuel System
Gasoline Direct Injection Gasoline Direct Injection
SAE Net Torque @ RPM
406 @ 1850 213 @ 4500
Engine Order Code
NA NA
Displacement
3.0 L/182 2.7 L/165
SAE Net Horsepower @ RPM
425 @ 5500 275 @ 7400
Mileage
EPA Fuel Economy Est - City (MPG)
17 20
Fuel Economy Est-Combined (MPG)
20 24
EPA Fuel Economy Est - Hwy (MPG)
26 30
Transmission
Reverse Ratio (:1)
3.73 3.33
Second Gear Ratio (:1)
2.32 2.05
Trans Order Code
ZMT NA
Fourth Gear Ratio (:1)
1.18 1.13
Trans Description Cont.
Manual w/OD Manual w/OD
Drivetrain
Rear Wheel Drive Rear Wheel Drive
Sixth Gear Ratio (:1)
0.85 0.84
First Gear Ratio (:1)
4.11 3.67
Final Drive Axle Ratio (:1)
3.46 3.89
Third Gear Ratio (:1)
1.54 1.46
Trans Type
6 6
Fifth Gear Ratio (:1)
1.00 0.97
Trans Description Cont. Again
NA NA
Seventh Gear Ratio (:1)
- NA
Summary
Vehicle Name
BMW M3 Porsche Cayman
Body Style
Sedan Coupe
Suspension
Suspension Type - Front
Strut Strut
Suspension Type - Front (Cont.)
Strut Strut
Suspension Type - Rear
Multi-Link Strut
Suspension Type - Rear (Cont.)
Multi-Link Strut
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
8.9 (Est) 7.4

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