Compare 2016 Audi A8 vs 2016 Cadillac CT6 vs 2016 Mercedes-Benz S Class

2016 Audi A8
X
2016 Cadillac CT6
X
2016 Mercedes-Benz S Class
X
Select style
4-Door Sedan 3.0T
Style MPG City MPG Hwy Invoice MSRP
A8 4-Door Sedan 3.0T 19 29 N/A N/A
A8 L 4-Door Sedan 3.0L TDI 24 36 $79,236 $85,200
A8 L 4-Door Sedan 3.0T 19 29 $75,796 $81,500
A8 L 4-Door Sedan 4.0T Sport 18 29 $84,166 $90,500
A8 L 4-Door Sedan 6.3L 14 22 $128,248 $137,900
S8 4-Door Sedan 15 25 $106,858 $114,900
S8 4-Door Sedan Plus 16 25 $106,858 $114,900
Select style
4-Door Sedan 2.0L Turbo Luxury RWD
Style MPG City MPG Hwy Invoice MSRP
CT6 4-Door Sedan 2.0L Turbo Luxury RWD 22 31 $54,891 $58,395
CT6 4-Door Sedan 2.0L Turbo RWD 22 31 $50,552 $53,495
CT6 4-Door Sedan 3.0L Turbo Luxury AWD 18 26 $60,531 $64,395
CT6 4-Door Sedan 3.0L Turbo Platinum AWD 18 26 $81,779 $87,465
CT6 4-Door Sedan 3.0L Turbo Premium Luxury AWD 18 26 $63,177 $67,570
CT6 4-Door Sedan 3.6L AWD 18 27 $52,442 $55,495
CT6 4-Door Sedan 3.6L Luxury AWD 18 27 $56,771 $60,395
CT6 4-Door Sedan 3.6L Platinum AWD 18 27 $78,039 $83,465
CT6 4-Door Sedan 3.6L Premium Luxury AWD 18 27 $59,437 $63,570
Select style
2-Door Coupe AMG S 63 4MATIC
Style MPG City MPG Hwy Invoice MSRP
S-Class 2-Door Coupe AMG S 63 4MATIC 15 23 $151,729 $163,150
S-Class 2-Door Coupe AMG S 65 RWD 13 20 $217,667 $234,050
S-Class 2-Door Coupe S 550 4MATIC 16 24 $113,042 $121,550
S-Class 4-Door Sedan AMG S 63 4MATIC 15 23 $133,223 $143,250
S-Class 4-Door Sedan AMG S 65 RWD 13 20 $208,925 $224,650
S-Class 4-Door Sedan Maybach S 600 RWD 13 20 $176,096 $189,350
S-Class 4-Door Sedan S 550 4MATIC 16 26 $91,745 $98,650
S-Class 4-Door Sedan S 550 Plug-In Hybrid RWD N/A N/A $88,955 $95,650
S-Class 4-Door Sedan S 550 RWD 17 26 $88,955 $95,650
S-Class 4-Door Sedan S 600 RWD 14 21 $157,217 $169,050
Pricing
Invoice Price
$75,796
$54,891
$151,729
Manufacturer Suggested Retail Price
$81,500
$58,395
$163,150
Monthly Payment Estimate
N/A
$973 / month
$2719 / month
The Car Connection's Take
TCC Rating
8.8
8.8
9.2
TCC’s Bottom Line
The 2016 Audi S8 pairs thrilling acceleration with excellent big-car handling and discreet luxury. With the space of a larger car, the handling of a smaller car, and a starting price in the $50,000s, the CT6 is a large luxury car value. Coupe, Cabriolet, and Maybach versions—and even a Plug-In Hybrid—make the 2016 Mercedes-Benz S-Class far more diverse and adventurous than it used to be; it's now not just a flagship sedan, but a family of flagships.
TCC Likes
TCC Dislikes
Fuel Economy
City
19 mpg 22 mpg 15 mpg
Highway
29 mpg 31 mpg 23 mpg
Vehicle
EPA Classification
Mid-Size Cars Large Cars Compact Cars
EPA Air Pollution Score
- - TBD - -
Number of Passenger Doors
- 4 -
Interior Dimensions
Second Leg Room (in)
38.7 40.4 -
Passenger Capacity
5 5 4
Front Leg Room (in)
41.4 42.3 -
Second Head Room (in)
38.1 38.0 36.7
Second Shoulder Room (in)
57.8 56.1 54.1
Front Head Room (in)
37.2 40.1 40
Passenger Volume (ft³)
115.1 - TBD - -
Front Shoulder Room (in)
59.1 58.3 60.6
Front Hip Room (in)
- 55.8 -
Second Hip Room (in)
- 53.4 -
Exterior Dimensions
Height, Overall (in)
57.5 57.9 56
Track Width, Rear (in)
64.4 64.0 64.7
Wheelbase (in)
117.8 122.4 115.9
Width, Max w/o mirrors (in)
76.7 74.0 75.3
Track Width, Front (in)
64.7 63.3 64.7
Length, Overall (in)
202.2 204.0 198.6
Min Ground Clearance (in)
- - TBD - -
Liftover Height (in)
- - TBD - -
Cargo Area Dimensions
Trunk Volume (ft³)
14.2 15.3 10.4
Brakes
Disc - Rear (Yes or )
Yes Yes Yes
Rear Brake Rotor Diam x Thickness (in)
14 - TBD - 14.4
Brake Type
4-Wheel Disc Pwr 4-Wheel Disc
Rear Drum Diam x Width (in)
NA NA NA
Disc - Front (Yes or )
Yes Yes Yes
Front Brake Rotor Diam x Thickness (in)
15 - TBD - 15.4
Drum - Rear (Yes or )
NA NA NA
Brake ABS System
4-Wheel 4-Wheel 4-Wheel
Fuel Tank
Fuel Tank Capacity, Approx (gal)
21.7 19.5 20.7
Steering
Steering Type
Rack-Pinion Electric Rack & Pinion Rack-Pinion
Turning Diameter - Curb to Curb (ft)
40.4 - TBD - -
Steering Ratio (:1), Overall
- - TBD - -
Lock to Lock Turns (Steering)
- - TBD - -
Turning Diameter - Wall to Wall (ft)
- - TBD - -
Tires
Front Tire Order Code
NA R3X NA
Spare Tire Order Code
NA ZCD NA
Rear Tire Size
P255/45HR19 P235/50R18 P285/40YR20
Rear Tire Order Code
NA R3X NA
Front Tire Size
P255/45HR19 P235/50R18 P255/45YR20
Spare Tire Size
Compact T135/70R18 NA
Weight Information
Base Curb Weight (lbs)
4365 3683 4678
Wheels
Rear Wheel Size (in)
19 X 9 18 x 8 20 X 9.5
Front Wheel Material
Aluminum Aluminum Aluminum
Spare Wheel Material
Aluminum - TBD - NA
Front Wheel Size (in)
19 X 9 18 x 8 20 X 8.5
Spare Wheel Size (in)
Compact 18 x - TBD - NA
Rear Wheel Material
Aluminum Aluminum Aluminum
Electrical
Maximum Alternator Capacity (amps)
190 - TBD - 150
Cold Cranking Amps @ 0° F (Primary)
- - TBD - 520
Engine
SAE Net Horsepower @ RPM
333 @ 5500 265 @ 5500 577 @ 5500
Engine Type
Intercooled Supercharger Premium Unleaded V-6 Turbocharged Gas I4 Twin Turbo Premium Unleaded V-8
Fuel System
Gasoline Direct Injection Direct Injection Gasoline Direct Injection
SAE Net Torque @ RPM
325 @ 2900 295 @ 3000 664 @ 2250
Engine Order Code
NA LTG NA
Displacement
3.0 L/183 2.0L/122 5.5 L/333
Mileage
EPA Fuel Economy Est - Hwy (MPG)
29 31 23
EPA Fuel Economy Est - City (MPG)
19 22 15
Fuel Economy Est-Combined (MPG)
22 25 18
Transmission
Drivetrain
All Wheel Rear Wheel Drive All Wheel
Fifth Gear Ratio (:1)
1.28 - TBD - 1.00
Trans Description Cont. Again
NA NA NA
Reverse Ratio (:1)
3.32 - TBD - 3.42
Second Gear Ratio (:1)
3.14 - TBD - 2.89
Trans Order Code
NA M5N 427
Seventh Gear Ratio (:1)
0.84 - TBD - 0.73
Fourth Gear Ratio (:1)
1.67 - TBD - 1.37
Trans Description Cont.
Automatic w/OD Automatic Automatic w/OD
Sixth Gear Ratio (:1)
1.00 - TBD - 0.82
First Gear Ratio (:1)
4.71 - TBD - 4.34
Final Drive Axle Ratio (:1)
3.20 3.27 2.47
Third Gear Ratio (:1)
2.11 - TBD - 1.92
Trans Type
8 8 7
Eighth Gear Ratio (:1)
0.67 - TBD - -
Clutch Size (in)
- NA -
Summary
Body Style
quattro Sedan Sedan 4MATIC Coupe
Vehicle Name
Audi A8 Cadillac CT6 Mercedes-Benz S-Class
Suspension
Suspension Type - Rear
Multi-Link Independent Multi-Link
Suspension Type - Rear (Cont.)
Multi-Link NA Multi-Link
Suspension Type - Front
Multi-Link Independent Multi-Link
Suspension Type - Front (Cont.)
Multi-Link NA Multi-Link
Stabilizer Bar Diameter - Front (in)
- - TBD - -
Shock Absorber Diameter - Rear (mm)
- - TBD - -
Stabilizer Bar Diameter - Rear (in)
- - TBD - -
Shock Absorber Diameter - Front (mm)
- - TBD - -
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
8.2 7.1 9.8
EPA Greenhouse Gas Score
- 6 -
Trailering
Dead Weight Hitch - Max Tongue Wt. (lbs)
- N/A -
Wt Distributing Hitch - Max Tongue Wt. (lbs)
- N/A -
Dead Weight Hitch - Max Trailer Wt. (lbs)
- N/A -
Wt Distributing Hitch - Max Trailer Wt. (lbs)
- N/A -
Cooling System
Total Cooling System Capacity (qts)
- - TBD - -

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