Compare 2015 BMW M3 vs 2015 Porsche Boxster

2015 BMW M3
2015 Porsche Boxster
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 Roadster
Style MPG City MPG Hwy Invoice MSRP
2-Door Roadster 20 30 N/A $51,400
2-Door Roadster S 20 28 N/A $63,300
2-Door Roadster GTS 19 26 N/A $73,500
Pricing
Invoice Price
$57,540
N/A
Manufacturer Suggested Retail Price
$62,000
$51,400
Monthly Payment Estimate
$1033 / month
$857 / 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 Boxster is a relative performance bargain, combining everyday usability with a balanced chassis and sweet engines.
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 Leg Room (in)
35.1 -
Passenger Capacity
5 2
Front Leg Room (in)
42 42.6
Second Head Room (in)
37.7 -
Second Shoulder Room (in)
55.1 -
Front Head Room (in)
40.3 38.6
Front Shoulder Room (in)
55.1 51.7
Front Hip Room (in)
- 53.4
Exterior Dimensions
Height, Overall (in)
56.1 50.5
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
Length, Overall (in)
184.5 172.2
Min Ground Clearance (in)
- 4.3
Cargo Area Dimensions
Trunk Volume (ft³)
12 9.9
Brakes
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
Front Brake Rotor Diam x Thickness (in)
15 12.4
Drum - Rear (Yes or )
NA NA
Brake ABS System
4-Wheel 4-Wheel
Fuel Tank
Fuel Tank Capacity, Approx (gal)
15.9 16.9
Steering
Steering Type
Rack-Pinion Rack-Pinion
Turning Diameter - Curb to Curb (ft)
40 36.4
Tires
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
Front Tire Size
P255/40YR18 P235/45ZR18
Spare Tire Size
NA NA
Weight Information
Base Curb Weight (lbs)
3540 2888
Wheels
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
Spare Wheel Size (in)
NA NA
Rear Wheel Material
Forged Aluminum Aluminum
Electrical
Maximum Alternator Capacity (amps)
210 120
Cold Cranking Amps @ 0° F (Primary)
900 340
Engine
SAE Net Torque @ RPM
406 @ 1850 206 @ 4400
Engine Order Code
NA NA
Displacement
3.0 L/182 2.7 L/165
SAE Net Horsepower @ RPM
425 @ 5500 265 @ 6700
Engine Type
Twin Turbo Premium Unleaded I-6 Premium Unleaded H-6
Fuel System
Gasoline Direct Injection Gasoline Direct Injection
Mileage
Fuel Economy Est-Combined (MPG)
20 24
EPA Fuel Economy Est - Hwy (MPG)
26 30
EPA Fuel Economy Est - City (MPG)
17 20
Transmission
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
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
Seventh Gear Ratio (:1)
- NA
Summary
Body Style
Sedan Convertible
Vehicle Name
BMW M3 Porsche Boxster
Suspension
Suspension Type - Rear
Multi-Link Strut
Suspension Type - Rear (Cont.)
Multi-Link Strut
Suspension Type - Front
Strut Strut
Suspension Type - Front (Cont.)
Strut Strut
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
8.9 (Est) 7.4

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