Mercedes-Benz SL-Class vs. Porsche Boxster

Black
VS
Carmine Red Metallic

Key Specs

Kelley Blue Book Value

Kelley Blue Book Value
$81,283 - $89,868
$69,034 - $74,223

Expert Rating

Expert Rating

Owner Reviews

Owner Reviews

Horsepower

Horsepower
449 hp
300 hp

Engine Type

Engine Type
4.7L Bi
2.0L 4

Interior Features

Keyless Entry

Keyless Entry
Not Available
Optional

Rain Sensing Wipers

Rain Sensing Wipers
Not Available
Optional

Heated Steering Wheel

Heated Steering Wheel
Not Available
Optional

Steering Wheel Controls

Steering Wheel Controls
Not Available
Optional

Cruise Control

Cruise Control
Optional
Not Available

Premium Sound System

Premium Sound System
Optional
Optional

Driver Restriction Features

Driver Restriction Features
Not Available
Optional

Front Leg Room

Front Leg Room
42.9 in.
Not Available

Front Head Room

Front Head Room
39.1 in.
Not Available

Trunk Volume

Trunk Volume
8.5 cu. ft.
9.7 cu. ft.

WiFi Hotspot

WiFi Hotspot
Not Available
Optional

Smart Device Integration

Smart Device Integration
Not Available
Optional

Climate Control

Climate Control
Not Available
Optional

Dual Zone

Dual Zone
Not Available
Optional

Navigation System

Navigation System
Not Available
Optional

Passengers

Passengers
2
2

Power Driver Seat

Power Driver Seat
Not Available
Optional

Power Passenger Seat

Power Passenger Seat
Not Available
Optional

Heated Front Seats

Heated Front Seats
Not Available
Optional

Cooled Front Seats

Cooled Front Seats
Not Available
Optional

Seat Memory

Seat Memory
Not Available
Optional

Driver Lumbar

Driver Lumbar
Not Available
Optional

Exterior Features

Hands Free Liftgate

Hands Free Liftgate
Not Available
Optional

Power Folding Mirror

Power Folding Mirror
Not Available
Optional

Rear Spoiler

Rear Spoiler
Not Available
Optional

Tire Width

Tire Width

Wheelbase

Wheelbase
101.7 in.
97.4 in.

Turning Radius

Turning Radius
36.2 ft.
36 ft.

Length

Length
182.3 in.
172.4 in.

Width

Width
73.9 in.
70.9 in.

Mechanical Specs

Weight

Weight
3959 .lbs
2943 - 3009 .lbs

Horsepower

Horsepower
449 hp
300 hp

Torque

Torque
516 ft. lbs.
280 ft. lbs.

Limited Slip Differential

Limited Slip Differential
Not Available
Optional

Performance Tires

Performance Tires
Not Available
Optional

Fuel Capacity

Fuel Capacity
19.8 gal.
14.3 - 16.9 gal.

Combined

Combined
9 - 13 mpg
11 - 14 mpg

City

City
17 mpg
21 mpg

Highway

Highway
25 mpg
28 mpg

Active Suspension

Active Suspension
Optional
Optional

Manual Mode

Manual Mode
Not Available
Optional

Safety Features

HID Headlights

HID Headlights
Not Available
Optional

Auto Leveling Headlights

Auto Leveling Headlights
Not Available
Optional

Adaptive Cruise Control

Adaptive Cruise Control
Optional
Optional

Blind Spot Monitor

Blind Spot Monitor
Optional
Optional

Lane Keeping Assist

Lane Keeping Assist
Optional
Not Available

Lane Departure Warning

Lane Departure Warning
Optional
Not Available

Tech Specs

Vehicle Name

Vehicle Name
Mercedes-Benz SL
Porsche 718 Boxster

Body Style

Body Style
Roadster
Convertible

Drivetrain

Drivetrain
Rear Wheel Drive
Rear Wheel Drive

EPA Classification

EPA Classification
Two-Seaters
Two-Seaters

Passenger Capacity

Passenger Capacity
2
2

Passenger Volume

Passenger Volume
50.5 ft³.
Not Available

Base Curb Weight

Base Curb Weight
3959 lbs.
2943 - 3009 lbs.

Fuel Economy Est-Combined

Fuel Economy Est-Combined
20 mpg.
24 - 25 mpg.

EPA Fuel Economy Est - City

EPA Fuel Economy Est - City
17 mpg.
21 - 22 mpg.

EPA Fuel Economy Est - Hwy

EPA Fuel Economy Est - Hwy
25 mpg.
28 - 29 mpg.

Engine Type

Engine Type
Twin Turbo Premium Unleaded V-8
Intercooled Turbo Premium Unleaded H-4

Displacement

Displacement
4.7 L/285
2.0 L/121

Fuel System

Fuel System
Gasoline Direct Injection
Gasoline Direct Injection

Trans Order Code

Trans Order Code
421
250, 480, _PDK01

Trans Type

Trans Type
9
6 - 7

Trans Description Cont.

Trans Description Cont.
Automatic w/OD
Auto-Shift Manual w/OD - Manual w/OD

First Gear Ratio (:1)

First Gear Ratio (:1)
5.35
3.31 - 3.91

Second Gear Ratio (:1)

Second Gear Ratio (:1)
3.24
1.95 - 2.29

Third Gear Ratio (:1)

Third Gear Ratio (:1)
2.25
1.41 - 1.65

Fourth Gear Ratio (:1)

Fourth Gear Ratio (:1)
1.64
1.13 - 1.30

Fifth Gear Ratio (:1)

Fifth Gear Ratio (:1)
1.21
0.95 - 1.08

Sixth Gear Ratio (:1)

Sixth Gear Ratio (:1)
1.00
0.81 - 0.88

Reverse Ratio (:1)

Reverse Ratio (:1)
4.80
3.00 - 3.55

Final Drive Axle Ratio (:1)

Final Drive Axle Ratio (:1)
2.65
3.89

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

Tons/yr of CO2 Emissions @ 15K mi/year
8.8
7.0 - 7.3

Suspension Type - Front

Suspension Type - Front
Multi-Link
Strut

Suspension Type - Rear

Suspension Type - Rear
Multi-Link
Strut

Suspension Type - Front (Cont.)

Suspension Type - Front (Cont.)
Multi-Link
Strut

Suspension Type - Rear (Cont.)

Suspension Type - Rear (Cont.)
Multi-Link
Strut

Front Tire Size

Front Tire Size
P255/35YR19
P235/35ZR20, P235/40ZR19, P235/45ZR18

Rear Tire Size

Rear Tire Size
P285/30YR19
P265/35ZR20, P265/40ZR19, P265/45ZR18

Front Wheel Size

Front Wheel Size
19 X 8.5 in.
18 X 8 - 20 X 8.5 in.

Rear Wheel Size

Rear Wheel Size
19 X 9.5 in.
18 X 9.5 - 20 X 10.5 in.

Front Wheel Material

Front Wheel Material
Aluminum
Aluminum - Forged Aluminum

Rear Wheel Material

Rear Wheel Material
Aluminum
Aluminum - Forged Aluminum

Steering Type

Steering Type
Rack-Pinion
Rack-Pinion

Turning Diameter - Curb to Curb

Turning Diameter - Curb to Curb
36.2 ft.
36 ft.

Brake Type

Brake Type
4-Wheel Disc
4-Wheel Disc

Brake ABS System

Brake ABS System
4-Wheel
4-Wheel

Disc - Front

Disc - Front
Yes
Yes

Disc - Rear

Disc - Rear
Yes
Yes

Front Brake Rotor Diam x Thickness

Front Brake Rotor Diam x Thickness
14.2 in.
13 - 13.8 in.

Rear Brake Rotor Diam x Thickness

Rear Brake Rotor Diam x Thickness
12.6 in.
11.8 - 13.8 in.

Fuel Tank Capacity, Approx

Fuel Tank Capacity, Approx
19.8 gal.
14.3 - 16.9 gal.

Front Head Room

Front Head Room
39.1 in.
Not Available

Front Leg Room

Front Leg Room
42.9 in.
Not Available

Front Shoulder Room

Front Shoulder Room
55.5 in.
Not Available

Front Hip Room

Front Hip Room
53.6 in.
Not Available

Wheelbase

Wheelbase
101.7 in.
97.4 in.

Length, Overall

Length, Overall
182.3 in.
172.4 in.

Width, Max w/o mirrors

Width, Max w/o mirrors
73.9 in.
70.9 in.

Height, Overall

Height, Overall
51.2 in.
50.6 - 50.9 in.

Track Width, Front

Track Width, Front
62.8 in.
59.6 in.

Track Width, Rear

Track Width, Rear
63 in.
60.3 in.

Trunk Volume

Trunk Volume
8.5 ft³.
9.7 ft³.

Seventh Gear Ratio (:1)

Seventh Gear Ratio (:1)
0.86
0.62

Eighth Gear Ratio (:1)

Eighth Gear Ratio (:1)
0.72
Not Available

Model Group

Model Group
SL
Boxster

Vehicle Segment

Vehicle Segment
Luxury Sport
Luxury Sport

Vehicle Type

Vehicle Type
Convertible
Convertible

Engine Displacement Units

Engine Displacement Units
4.7
2.0

Engine Camshaft

Engine Camshaft
DOHC
DOHC

Engine Block Type

Engine Block Type
aluminum
aluminum

Engine Cylinder Count

Engine Cylinder Count
8
4

Engine Valve Count

Engine Valve Count
4
4