2017 BMW 4-Series vs 2017 Porsche 718

2017 BMW 4-Series

2017 Porsche 718

Select style

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

Show Only Differences

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

Read Our Full Review

8.2

Read Our Full Review

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

Twin-turbo inline-6 can rev for days
Available optional paint colors can be stunning
Demands perfection...

Accurate steering, confident handling
Attractive, modern styling
Brisk acceleration

TCC Dislikes

Engine wail isn't wholly satisfying
Drop-top version is $8,500 more
Rearview camera is buried in needlessly expensive package

Wind and engine noise at high speeds
Adding options brings the bottom line into 911 territory
Switchgear a little fussy

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

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 )

Brake ABS System

4-Wheel

Disc - Rear (Yes or )

Yes

Rear Brake Rotor Diam x Thickness (in)

11.8

Brake Type

4-Wheel Disc

Rear Drum Diam x Width (in)

Disc - Front (Yes or )

Yes

Front Brake Rotor Diam x Thickness (in)

Fuel Tank

Fuel Tank Capacity, Approx (gal)

15.8

14.3

Steering

Steering Type

Rack-Pinion

Turning Diameter - Curb to Curb (ft)

37.1

Tires

Spare Tire Size

Front Tire Order Code

Spare Tire Order Code

Rear Tire Size

P225/45VR18

P265/45ZR18

Rear Tire Order Code

Front Tire Size

P225/45VR18

P235/45ZR18

Weight Information

Base Curb Weight (lbs)

3995

2944

Wheels

Rear Wheel Material

Aluminum

Rear Wheel Size (in)

18 X 8

18 X 9.5

Front Wheel Material

Aluminum

Spare Wheel Material

Front Wheel Size (in)

18 X 8

Spare Wheel Size (in)

Electrical

Cold Cranking Amps @ 0° F (Primary)

900

Maximum Alternator Capacity (amps)

170

Engine

Fuel System

Gasoline Direct Injection

SAE Net Torque @ RPM

258 @ 1450

280 @ 1950

Engine Order Code

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)

Fuel Economy Est-Combined (MPG)

EPA Fuel Economy Est - Hwy (MPG)

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

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

Seventh Gear Ratio (:1)

0.84

Fifth Gear Ratio (:1)

1.28

0.95

Trans Description Cont. Again

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

Suspension

Suspension Type - Front (Cont.)

Strut

Suspension Type - Rear

Multi-Link

Strut

Suspension Type - Rear (Cont.)

Multi-Link

Strut

Suspension Type - Front

Strut

Emissions

Tons/yr of CO2 Emissions @ 15K mi/year

6.6

7.3

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