2015 Mercedes-Benz SL Class vs 2015 Porsche 911

2015 Mercedes-Benz SL Class

2015 Porsche 911

Select style

2-Door Roadster SL 400

Style	MPG City	MPG Hwy	Invoice	MSRP
SL-Class 2-Door Roadster SL 400	20	27	$78,120	$84,000
SL-Class 2-Door Roadster SL 550	17	24	$99,417	$106,900
SL-Class 2-Door Roadster SL 63 AMG	16	25	$137,687	$148,050
SL-Class 2-Door Roadster SL 65 AMG	14	21	$200,183	$215,250

Select style

2-Door Convertible Carrera

Style	MPG City	MPG Hwy	Invoice	MSRP
911 2-Door Convertible Carrera	19	27	N/A	$96,200
911 2-Door Convertible Carrera 4	19	26	N/A	$102,930
911 2-Door Convertible Carrera 4 GTS	18	25	N/A	$132,800
911 2-Door Convertible Carrera 4S	18	26	N/A	$117,530
911 2-Door Convertible Carrera GTS	18	25	N/A	$126,100
911 2-Door Convertible Carrera S	19	27	N/A	$110,800
911 2-Door Convertible Turbo	17	24	N/A	$163,000
911 2-Door Convertible Turbo S	17	24	N/A	$194,600
911 2-Door Coupe Carrera	19	27	N/A	$84,300
911 2-Door Coupe Carrera 4	19	27	N/A	$91,030
911 2-Door Coupe Carrera 4 GTS	18	26	N/A	$120,900
911 2-Door Coupe Carrera 4S	18	26	N/A	$105,630
911 2-Door Coupe Carrera GTS	18	26	N/A	$114,200
911 2-Door Coupe Carrera S	19	27	N/A	$98,900
911 2-Door Coupe GT3	15	20	N/A	$130,400
911 2-Door Coupe Turbo	17	24	N/A	$151,100
911 2-Door Coupe Turbo S	17	24	N/A	$182,700
911 2-Door Targa 4	18	26	N/A	$101,600
911 2-Door Targa 4S	18	26	N/A	$116,200

Show Only Differences

Pricing

Invoice Price

$78,120

N/A

Manufacturer Suggested Retail Price

$84,000

$96,200

Monthly Payment Estimate

$1400 / month

$1603 / month

The Car Connection's Take

TCC Rating

8.2

Read Our Full Review

9.0

Read Our Full Review

TCC’s Bottom Line

The 2015 Mercedes-Benz SL-Class is sportier than its predecessor, but still manages to coddle its occupants just as before.

The 2015 Porsche 911 is an enthusiast's dream, with excellent handling, comfort, and performance at every step through its range.

TCC Likes

Twin-turbo V-8's exceptional surge
New V-6 model
Wide but supportive seats

Performance ranges from great to fantastic
Modern take on classic good looks
Comfortable, quiet interior

TCC Dislikes

ABC not as easy as 1-2-3
Less storage space behind seats
B&O bass isn't there

Electric power steering feel isn't quite 100%
Can get expensive in a hurry
Rear seat is cramped

Fuel Economy

City

20 mpg

19 mpg

Highway

27 mpg

Vehicle

EPA Classification

Two-Seaters

Minicompact Cars

Interior Dimensions

Front Leg Room (in)

42.9

Front Hip Room (in)

53.6

Passenger Capacity

Front Head Room (in)

39.1

Front Shoulder Room (in)

55.5

Exterior Dimensions

Track Width, Rear (in)

59.8

Wheelbase (in)

101.8

96.5

Width, Max w/o mirrors (in)

73.9

71.2

Track Width, Front (in)

62.9

60.3

Length, Overall (in)

181.6

176.8

Height, Overall (in)

51.8

51.3

Cargo Area Dimensions

Trunk Volume (ft³)

8.5

Brakes

Drum - Rear (Yes or )

Brake ABS System

4-Wheel

Disc - Rear (Yes or )

Yes

Rear Brake Rotor Diam x Thickness (in)

12.6

Brake Type

4-Wheel Disc

Rear Drum Diam x Width (in)

Disc - Front (Yes or )

Yes

Front Brake Rotor Diam x Thickness (in)

14.2

Fuel Tank

Fuel Tank Capacity, Approx (gal)

19.8

16.9

Steering

Steering Type

Rack-Pinion

Turning Diameter - Curb to Curb (ft)

36.2

36.4

Tires

Spare Tire Size

Front Tire Order Code

Spare Tire Order Code

Rear Tire Size

P285/35YR18

P285/35YR19

Rear Tire Order Code

Front Tire Size

P255/40YR18

P235/40YR19

Wheels

Rear Wheel Material

Aluminum

Rear Wheel Size (in)

18 X 9.5

19 X 11

Front Wheel Material

Aluminum

Spare Wheel Material

Front Wheel Size (in)

18 X 8.5

19 X 8.5

Spare Wheel Size (in)

Engine

SAE Net Torque @ RPM

354 @ 1600

287 @ 5600

Engine Order Code

Displacement

3.0 L/183

3.4 L/210

SAE Net Horsepower @ RPM

329 @ 5250

350 @ 7400

Engine Type

Twin Turbo Premium Unleaded V-6

Premium Unleaded H-6

Fuel System

Gasoline Direct Injection

Mileage

Fuel Economy Est-Combined (MPG)

EPA Fuel Economy Est - Hwy (MPG)

EPA Fuel Economy Est - City (MPG)

Transmission

First Gear Ratio (:1)

4.38

3.91

Final Drive Axle Ratio (:1)

2.65

3.44

Third Gear Ratio (:1)

1.92

1.55

Trans Type

Seventh Gear Ratio (:1)

0.73

0.71

Fifth Gear Ratio (:1)

1.00

1.08

Trans Description Cont. Again

Drivetrain

Rear Wheel Drive

Reverse Ratio (:1)

3.42

3.55

Second Gear Ratio (:1)

2.86

2.29

Trans Order Code

427

487

Fourth Gear Ratio (:1)

1.37

1.30

Trans Description Cont.

Automatic w/OD

Manual w/OD

Sixth Gear Ratio (:1)

0.82

0.88

Summary

Vehicle Name

Mercedes-Benz SL-Class

Porsche 911

Body Style

Roadster

Cabriolet

Suspension

Suspension Type - Rear

Multi-Link

Suspension Type - Rear (Cont.)

Multi-Link

Suspension Type - Front

Multi-Link

Strut

Suspension Type - Front (Cont.)

Multi-Link

Strut

Weight Information

Base Curb Weight (lbs)

3197

Electrical

Cold Cranking Amps @ 0° F (Primary)

450

Maximum Alternator Capacity (amps)

175

Emissions

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

8.0

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