Audi S4 vs. Mercedes-Benz SL-Class

Mythos Black Metallic
VS
Black

Key Specs

Kelley Blue Book Value

Kelley Blue Book Value
$46,683 - $51,090
$83,881 - $93,413

Expert Rating

Expert Rating

Owner Reviews

Owner Reviews
Not Available

Horsepower

Horsepower
354 hp
449 hp

Engine Type

Engine Type
3.0L TFSI Twin
4.7L Bi

Interior Features

Heated Steering Wheel

Heated Steering Wheel
Optional
Not Available

Cruise Control

Cruise Control
Not Available
Optional

Premium Sound System

Premium Sound System
Not Available
Optional

Front Leg Room

Front Leg Room
41.3 in.
42.9 in.

Front Head Room

Front Head Room
38.9 in.
39.1 in.

Rear Leg Room

Rear Leg Room
35.7 in.
Not Available

Second Head Room

Second Head Room
37.4 in.
Not Available

Trunk Volume

Trunk Volume
13 cu. ft.
8.5 cu. ft.

WiFi Hotspot

WiFi Hotspot
Optional
Not Available

Passengers

Passengers
5
2

Heated Front Seats

Heated Front Seats
Optional
Not Available

Heated Rear Seats

Heated Rear Seats
Optional
Not Available

Cooled Front Seats

Cooled Front Seats
Optional
Not Available

Driver Lumbar

Driver Lumbar
Optional
Not Available

Exterior Features

Rear Spoiler

Rear Spoiler
Optional
Not Available

Tire Width

Tire Width

Wheelbase

Wheelbase
111.2 in.
101.7 in.

Turning Radius

Turning Radius
38.1 ft.
36.2 ft.

Length

Length
186.8 in.
182.3 in.

Width

Width
72.5 in.
73.9 in.

Mechanical Specs

Weight

Weight
3858 .lbs
3959 .lbs

Horsepower

Horsepower
354 hp
449 hp

Torque

Torque
369 ft. lbs.
516 ft. lbs.

Limited Slip Differential

Limited Slip Differential
Optional
Not Available

Performance Tires

Performance Tires
Optional
Not Available

Fuel Capacity

Fuel Capacity
15.3 gal.
19.8 gal.

Combined

Combined
11 - 15 mpg
9 - 13 mpg

City

City
21 mpg
17 mpg

Highway

Highway
30 mpg
25 mpg

Active Suspension

Active Suspension
Optional
Optional

Manual Mode

Manual Mode
Optional
Not Available

Safety Features

Adaptive Cruise Control

Adaptive Cruise Control
Not Available
Optional

Blind Spot Monitor

Blind Spot Monitor
Optional
Optional

Lane Keeping Assist

Lane Keeping Assist
Not Available
Optional

Lane Departure Warning

Lane Departure Warning
Not Available
Optional

Cross Traffic Alert

Cross Traffic Alert
Optional
Not Available

Front Side Airbag

Front Side Airbag
Optional
Not Available

Rear Side Airbag

Rear Side Airbag
Optional
Not Available

Tech Specs

Vehicle Name

Vehicle Name
Audi S4
Mercedes-Benz SL

Body Style

Body Style
quattro Sedan
Roadster

Drivetrain

Drivetrain
All Wheel Drive
Rear Wheel Drive

EPA Classification

EPA Classification
Compact Cars
Two-Seaters

Passenger Capacity

Passenger Capacity
5
2

Base Curb Weight

Base Curb Weight
3858 lbs.
3959 lbs.

Fuel Economy Est-Combined

Fuel Economy Est-Combined
24 mpg.
20 mpg.

EPA Fuel Economy Est - City

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

EPA Fuel Economy Est - Hwy

EPA Fuel Economy Est - Hwy
30 mpg.
25 mpg.

Engine Type

Engine Type
Intercooled Turbo Premium Unleaded V-6
Twin Turbo Premium Unleaded V-8

Displacement

Displacement
3.0 L/183
4.7 L/285

Fuel System

Fuel System
Gasoline Direct Injection
Gasoline Direct Injection

Trans Type

Trans Type
8
9

Trans Description Cont.

Trans Description Cont.
Automatic w/OD
Automatic w/OD

First Gear Ratio (:1)

First Gear Ratio (:1)
4.71
5.35

Second Gear Ratio (:1)

Second Gear Ratio (:1)
3.14
3.24

Third Gear Ratio (:1)

Third Gear Ratio (:1)
2.11
2.25

Fourth Gear Ratio (:1)

Fourth Gear Ratio (:1)
1.67
1.64

Fifth Gear Ratio (:1)

Fifth Gear Ratio (:1)
1.28
1.21

Sixth Gear Ratio (:1)

Sixth Gear Ratio (:1)
1.00
1.00

Reverse Ratio (:1)

Reverse Ratio (:1)
3.32
4.80

Final Drive Axle Ratio (:1)

Final Drive Axle Ratio (:1)
2.85
2.65

Cold Cranking Amps @ 0° F (Primary)

Cold Cranking Amps @ 0° F (Primary)
420
Not Available

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

Tons/yr of CO2 Emissions @ 15K mi/year
7.4
8.8

Maximum Alternator Capacity (amps)

Maximum Alternator Capacity (amps)
150
Not Available

Suspension Type - Front

Suspension Type - Front
Multi-Link
Multi-Link

Suspension Type - Rear

Suspension Type - Rear
Multi-Link
Multi-Link

Suspension Type - Front (Cont.)

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

Suspension Type - Rear (Cont.)

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

Front Tire Order Code

Front Tire Order Code
HU9
Not Available

Rear Tire Order Code

Rear Tire Order Code
HU9
Not Available

Front Tire Size

Front Tire Size
P245/35YR19, P245/40HR18, P245/40YR18
P255/35YR19

Rear Tire Size

Rear Tire Size
P245/35YR19, P245/40HR18, P245/40YR18
P285/30YR19

Spare Tire Size

Spare Tire Size
Compact
Not Available

Front Wheel Size

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

Rear Wheel Size

Rear Wheel Size
18 X 8.5 - 19 X 8.5 in.
19 X 9.5 in.

Spare Wheel Size

Spare Wheel Size
Compact in.
Not Available

Front Wheel Material

Front Wheel Material
Aluminum
Aluminum

Rear Wheel Material

Rear Wheel Material
Aluminum
Aluminum

Spare Wheel Material

Spare Wheel Material
Steel
Not Available

Steering Type

Steering Type
Rack-Pinion
Rack-Pinion

Turning Diameter - Curb to Curb

Turning Diameter - Curb to Curb
38.1 ft.
36.2 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
13.8 in.
14.2 in.

Rear Brake Rotor Diam x Thickness

Rear Brake Rotor Diam x Thickness
13 in.
12.6 in.

Fuel Tank Capacity, Approx

Fuel Tank Capacity, Approx
15.3 gal.
19.8 gal.

Front Head Room

Front Head Room
38.9 in.
39.1 in.

Front Leg Room

Front Leg Room
41.3 in.
42.9 in.

Front Shoulder Room

Front Shoulder Room
55.9 in.
55.5 in.

Second Head Room

Second Head Room
37.4 in.
Not Available

Second Leg Room

Second Leg Room
35.7 in.
Not Available

Second Shoulder Room

Second Shoulder Room
54.5 in.
Not Available

Wheelbase

Wheelbase
111.2 in.
101.7 in.

Length, Overall

Length, Overall
186.8 in.
182.3 in.

Width, Max w/o mirrors

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

Height, Overall

Height, Overall
55.3 in.
51.2 in.

Track Width, Front

Track Width, Front
61.6 in.
62.8 in.

Track Width, Rear

Track Width, Rear
60.9 in.
63 in.

Trunk Volume

Trunk Volume
13 ft³.
8.5 ft³.

Seventh Gear Ratio (:1)

Seventh Gear Ratio (:1)
0.84
0.86

Eighth Gear Ratio (:1)

Eighth Gear Ratio (:1)
0.67
0.72

Model Group

Model Group
S4
SL

Vehicle Segment

Vehicle Segment
Luxury Sport
Luxury Sport

Vehicle Type

Vehicle Type
Sedan
Convertible

Engine Displacement Units

Engine Displacement Units
3.0
4.7

Engine Camshaft

Engine Camshaft
DOHC
DOHC

Engine Block Type

Engine Block Type
aluminum
aluminum

Engine Cylinder Count

Engine Cylinder Count
6
8

Engine Valve Count

Engine Valve Count
4
4