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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 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
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
Front Hip Room (in)
- 55.8 -
Second Hip Room (in)
- 53.4 -
Exterior Dimensions
Track Width, Front (in)
64.7 63.3 64.7
Length, Overall (in)
202.2 204.0 198.6
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
Liftover Height (in)
- - TBD - -
Min Ground Clearance (in)
- - TBD - -
Cargo Area Dimensions
Trunk Volume (ft³)
14.2 15.3 10.4
Brakes
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
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
Fuel Tank
Fuel Tank Capacity, Approx (gal)
21.7 19.5 20.7
Steering
Turning Diameter - Curb to Curb (ft)
40.4 - TBD - -
Steering Type
Rack-Pinion Electric Rack & Pinion Rack-Pinion
Lock to Lock Turns (Steering)
- - TBD - -
Turning Diameter - Wall to Wall (ft)
- - TBD - -
Steering Ratio (:1), Overall
- - TBD - -
Tires
Rear Tire Order Code
NA R3X NA
Front Tire Size
P255/45HR19 P235/50R18 P255/45YR20
Spare Tire Size
Compact T135/70R18 NA
Front Tire Order Code
NA R3X NA
Spare Tire Order Code
NA ZCD NA
Rear Tire Size
P255/45HR19 P235/50R18 P285/40YR20
Weight Information
Base Curb Weight (lbs)
4365 3683 4678
Wheels
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
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
Electrical
Maximum Alternator Capacity (amps)
190 - TBD - 150
Cold Cranking Amps @ 0° F (Primary)
- - TBD - 520
Engine
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
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
Mileage
EPA Fuel Economy Est - City (MPG)
19 22 15
Fuel Economy Est-Combined (MPG)
22 25 18
EPA Fuel Economy Est - Hwy (MPG)
29 31 23
Transmission
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 - -
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
Clutch Size (in)
- NA -
Summary
Vehicle Name
Audi A8 Cadillac CT6 Mercedes-Benz S-Class
Body Style
quattro Sedan Sedan 4MATIC Coupe
Suspension
Suspension Type - Front
Multi-Link Independent Multi-Link
Suspension Type - Front (Cont.)
Multi-Link NA Multi-Link
Suspension Type - Rear
Multi-Link Independent Multi-Link
Suspension Type - Rear (Cont.)
Multi-Link NA Multi-Link
Shock Absorber Diameter - Rear (mm)
- - TBD - -
Stabilizer Bar Diameter - Rear (in)
- - TBD - -
Shock Absorber Diameter - Front (mm)
- - TBD - -
Stabilizer Bar Diameter - Front (in)
- - 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 Trailer Wt. (lbs)
- N/A -
Wt Distributing Hitch - Max Trailer Wt. (lbs)
- N/A -
Dead Weight Hitch - Max Tongue Wt. (lbs)
- N/A -
Wt Distributing Hitch - Max Tongue Wt. (lbs)
- N/A -
Cooling System
Total Cooling System Capacity (qts)
- - TBD - -

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