Compare Audi S4 Sedan vs Audi S6 vs Cadillac CTS Sedan

Audi S4 Sedan
2021 Audi S4 Sedan
Select configuration:
$49,900
Starting Price (MSRP)
8.6
Audi S4 Sedan Full Review
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Audi S6
2021 Audi S6
Select configuration:
$74,400
Starting Price (MSRP)
8.0
Audi S6 Full Review
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Cadillac CTS Sedan
2019 Cadillac CTS Sedan
Select configuration:
$46,995
Starting Price (MSRP)
7.5
Cadillac CTS Sedan Full Review
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Overview

Engine
3.0-liter Turbo V6 Gas
Engine
2.9-liter Twin-Turbo V6 Hybrid
Engine
2.0-liter Turbo Inline-4 Gas
Transmission
8-Speed Automatic
Transmission
8-Speed Automatic
Transmission
8-Speed Automatic
Drivetrain
Other
Drivetrain
Other
Drivetrain
Rear-Wheel Drive
Fuel Economy
City: 20 MPG
Hwy: 28 MPG
Fuel Economy
City: 18 MPG
Hwy: 28 MPG
Fuel Economy
City: 22 MPG
Hwy: 30 MPG
Fuel Tank Capacity
15.3 gallons
Fuel Tank Capacity
19.3 gallons
Fuel Tank Capacity
19 gallons
Seating Capacity
5 seater
Seating Capacity
5 seater
Seating Capacity
5 seater
Trunk Volume
12 ft³
Trunk Volume
13.7 ft³
Trunk Volume
13.7 ft³

Photos

24
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18
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44
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Performance Specs

Engine and Transmission

Engine
3.0-liter Turbo V6 Gas
2.9-liter Twin-Turbo V6 Hybrid
2.0-liter Turbo Inline-4 Gas
Horsepower
349 hp @ 5400 rpm
444 hp
265 hp @ 5600 rpm
Torque
369 lb-ft @ 1370 rpm
443 lb-ft
295 lb-ft @ 3000-4500 rpm
Transmission
8-Speed Automatic
8-Speed Automatic
8-Speed Automatic
Drivetrain
Other
Other
Rear-Wheel Drive

Steering

Steering Type
Rack-Pinion
Rack-Pinion
Pwr
Turning Diameter
38.1 ft
39.7 ft
37.1 ft

Wheels

Wheels Type
Aluminum Wheels
Aluminum Wheels
Aluminum Wheels
Front Wheel Size
18" x 8"
21" x 8.5"
17" x 8.5"
Rear Wheel Size
18" x 8"
21" x 8.5"
17" x 8.5"

Suspension

Front Suspension
Multi-Link
Multi-Link
MacPherson Strut
Rear Suspension
Multi-Link
Multi-Link
Independent Multi-Link

Tires

Front Tire
P245/40YR18
P255/35YR21
P245/45R17
Rear Tire
P245/40YR18
P255/35YR21
P245/45R17
Spare Tire
Compact
Compact
N/A

Fuel and MPG

Fuel Economy

Combined
23 MPG
22 MPG
25 MPG
City
20 MPG
18 MPG
22 MPG
Highway
28 MPG
28 MPG
30 MPG

Emissions

CO2 Emissions @ 15K mi/year
7.8 Tons/yr
8.1 Tons/yr
7.0 Tons/yr

Fuel Tank

Fuel Tank Capacity
15.3 gallons
19.3 gallons
19 gallons
Cruising Range City
306 miles
347.4 miles
418 miles
Cruising Range Highway
428.4 miles
540.4 miles
570 miles

Dimensions and Measurement

Exterior Dimensions

Length
187.5 in
195 in
195.5 in
Height
56.2 in
56.9 in
57.2 in
Max Width
72.7 in
74.3 in
72.2 in
Front Width
61.9 in
64.3 in
61.4 in
Rear Width
61.2 in
63.7 in
61.7 in
Wheelbase
111 in
115.3 in
114.6 in
Ground Clearance
4.5 in
N/A
N/A

Interior Space

Seating Capacity
5 seater
5 seater
5 seater
Front Seat Leg Room
41.3 in
41.3 in
45.7 in
Front Seat Headroom
37.3 in
38 in
40.4 in
Front Seat Shoulder Room
55.9 in
57.8 in
56.9 in
Front Seat Hip Room
N/A
N/A
53.8 in
Rear Seat Leg Room
35.7 in
37.4 in
35.4 in
Rear Seat Headroom
37.4 in
38.1 in
37.5 in
Rear Seat Shoulder Room
54.5 in
56.5 in
54.8 in
Rear Seat Hip Room
N/A
N/A
53.3 in

Weight and Towing

Curb Weight
3,847 lbs
4,486 lbs
3,652 lbs

Cargo Space

Trunk Volume
12 ft³
13.7 ft³
13.7 ft³

Colors and Materials

Standard Exterior Colors

  • Ibis White
  • Quantum Gray
  • Turbo Blue
  • Brilliant Black
  • Ibis White
N/A

Optional Exterior Colors

  • Daytona Gray Pearl Effect
  • Glacier White Metallic
  • Mythos Black Metallic
  • Navarra Blue Metallic
  • Tango Red Metallic
  • Avalon Green Metallic
  • Daytona Gray Pearl Effect
  • Firmament Blue Metallic
  • Florett Silver Metallic
  • Glacier White Metallic
  • Mythos Black Metallic
  • Navarra Blue Metallic
  • Tango Red Metallic
  • Vesuvius Gray Metallic
N/A

Standard Interior Materials

  • Black, Leather/Alcantara Seats
  • Rotor Gray, Leather/Alcantara Seats
  • Arras Red, Valcona Leather Seat Trim
  • Black, Valcona Leather Seat Trim
  • Black, Valcona/Milano Leather Seat Trim
  • Rotor Gray, Valcona Leather Seat Trim
  • Jet Black with Jet Black Accents, Leather seating surfaces
  • Light Platinum with Jet Black Accents, Leather seating surfaces
  • Light Platinum with Jet Black Accents, Leatherette seating surfaces

Features and Options

Infotainment

HD Radio
Standard
Standard
Not Available
Bluetooth Connection
Standard
Standard
Standard
Premium Sound System
Not Available
Standard
Standard
Satellite Radio
Optional
Standard
Standard
Smart Device Integration
Standard
Standard
Not Available
WiFi Hotspot
Not Available
Standard
Standard
Auxiliary Audio Input
Standard
Standard
Not Available
MP3 Player
Standard
Standard
Not Available

Interior Trim

Bucket Seats
Standard
Standard
Not Available
Cloth Seats
Standard
Standard
Standard
Leather Seats
Standard
Standard
Standard
Leather Steering Wheel
Standard
Standard
Standard
Premium Synthetic Seats
Standard
Standard
Standard
Vinyl Seats
Standard
Standard
Standard
Woodgrain Interior Trim
Not Available
Standard
Standard
Sun/Moonroof
Standard
Standard
Optional

Comfort

Navigation System
Not Available
Standard
Not Available
Steering Wheel Audio Controls
Standard
Standard
Standard
Power Mirror(s)
Standard
Standard
Standard
A/C
Standard
Standard
Standard
Adaptive Cruise Control
Not Available
Standard
Not Available
Climate Control
Standard
Standard
Standard
Cooled Front Seat(s)
Not Available
Optional
Optional
Cruise Control
Standard
Standard
Standard
Hands-Free Liftgate
Optional
Not Available
Not Available
Heated Front Seat(s)
Standard
Standard
Optional
Heated Rear Seat(s)
Not Available
Standard
Not Available
Heated Steering Wheel
Optional
Standard
Optional
Keyless Entry
Standard
Standard
Standard
Multi-Zone A/C
Standard
Standard
Standard
Power Driver Seat
Standard
Standard
Standard
Power Passenger Seat
Standard
Standard
Standard
Remote Engine Start
Not Available
Not Available
Standard
Remote Trunk Release
Optional
Not Available
Standard
Seat Memory
Optional
Standard
Standard
Universal Garage Door Opener
Standard
Standard
Standard
Seat-Massage
Standard
Optional
Not Available
Rear A/C
Standard
Standard
Not Available
Keyless Start
Standard
Standard
Standard
Telematics
Not Available
Standard
Standard

Safety

Safety Features

Back-Up Camera
Standard
Standard
Standard
Cross-Traffic Alert
Optional
Standard
Not Available
Rear Parking Aid
Optional
Standard
Standard
Blind Spot Monitor
Optional
Standard
Not Available
Lane Departure Warning
Standard
Standard
Not Available
Lane Keeping Assist
Not Available
Standard
Not Available
ABS
Standard
Standard
Standard
Night Vision
Not Available
Optional
Not Available
Tire Pressure Monitor
Standard
Standard
Standard
Brake Assist
Standard
Standard
Not Available
Stability Control
Standard
Standard
Standard
Traction Control
Standard
Standard
Standard

US NHTSA crash test result

Overall Rating
N/A
N/A
Frontal Barrier Crash Rating
N/A
N/A
Side Crash Rating
N/A
N/A
Rollover Rating
N/A
N/A

Airbags

Driver Air Bag
Standard
Standard
Standard
Front Head Air Bag
Standard
Standard
Standard
Front Side Air Bag
Standard
Standard
Standard
Knee Air Bag
Standard
Standard
Standard
Passenger Air Bag
Standard
Standard
Standard
Rear Head Air Bag
Standard
Standard
Standard
Rear Side Air Bag
Optional
Optional
Standard

Warranty

Warranty Summary

Basic
4 Years / 50,000 Miles
4 Years / 50,000 Miles
4 Years / 50,000 Miles
Corrosion
12 Years / Unlimited Miles
12 Years / Unlimited Miles
4 Years / 50,000 Miles
Drivetrain
4 Years / 50,000 Miles
4 Years / 50,000 Miles
6 Years / 70,000 Miles
Roadside Assistance
4 Years / Unlimited Miles
4 Years / Unlimited Miles
6 Years / 70,000 Miles
Hybrid/Electric Components
N/A
8 Years / 100,000 Miles
N/A
Maintenance Note
N/A
N/A
1 Year/1 Visit
Rust-Through
N/A
N/A
6 Years / Unlimited Miles