Compare 2017 Audi A8 vs 2017 Cadillac CT6 vs 2017 Mercedes-Benz S Class

2017 Audi A8
X
2017 Cadillac CT6
X
2017 Mercedes-Benz S Class
X
Select style
3.0 TFSI
Style MPG City MPG Hwy Invoice MSRP
A8 L 3.0 TFSI 19 29 $76,725 $82,500
A8 L 4.0 TFSI Sport 18 29 $85,096 $91,500
S8 plus 4.0 TFSI 15 24 $107,788 $115,900
Select style
4-Door Sedan 2.0L PLUG-IN RWD
Style MPG City MPG Hwy Invoice MSRP
CT6 4-Door Sedan 2.0L PLUG-IN RWD N/A N/A $71,340 $75,095
CT6 4-Door Sedan 2.0L Turbo Luxury RWD 22 30 $55,760 $58,695
CT6 4-Door Sedan 2.0L Turbo RWD 22 30 $51,105 $53,795
CT6 4-Door Sedan 3.0L Turbo Luxury AWD 18 26 $61,460 $64,695
CT6 4-Door Sedan 3.0L Turbo Platinum AWD 18 26 $83,405 $87,795
CT6 4-Door Sedan 3.0L Turbo Premium Luxury AWD 18 26 $64,500 $67,895
CT6 4-Door Sedan 3.6L AWD 18 27 $53,005 $55,795
CT6 4-Door Sedan 3.6L Luxury AWD 18 27 $57,660 $60,695
CT6 4-Door Sedan 3.6L Platinum AWD 18 27 $79,605 $83,795
CT6 4-Door Sedan 3.6L Premium Luxury AWD 18 27 $60,700 $63,895
Select style
AMG S 63 4MATIC Convertible
Style MPG City MPG Hwy Invoice MSRP
S-Class AMG S 63 4MATIC Convertible 14 22 $164,052 $176,400
S-Class AMG S 63 4MATIC Coupe 15 23 $153,218 $164,750
S-Class AMG S 63 4MATIC Sedan 15 23 $134,571 $144,700
S-Class AMG S 65 Convertible 14 21 $230,547 $247,900
S-Class AMG S 65 Coupe 13 21 $219,713 $236,250
S-Class AMG S 65 Sedan 13 22 $211,017 $226,900
S-Class Maybach S 550 4MATIC Sedan 16 24 $154,566 $166,200
S-Class Maybach S 600 Sedan 13 21 $177,909 $191,300
S-Class S 550 4MATIC Coupe 17 25 $114,158 $122,750
S-Class S 550 4MATIC Sedan 16 25 $92,628 $99,600
S-Class S 550 Convertible 17 25 $122,202 $131,400
S-Class S 550 Sedan 18 26 $89,838 $96,600
S-Class S 550e Plug-In Hybrid Sedan N/A N/A $89,838 $96,600
S-Class S 600 Sedan 13 22 $158,798 $170,750

Pricing

Invoice Price

$76,725
$71,340
$164,052

Manufacturer Suggested Retail Price

$82,500
$75,095
$176,400

Monthly Payment Estimate

$1375 / month
$1252 / month
$2940 / month

The Car Connection's Take

TCC Rating

8.0
8.0
8.4

TCC’s Bottom Line

The 2017 Audi S8 is the super sedan by which others are measured. The 2017 Cadillac CT6 has a spare, light appeal that runs counter to its German rivals; with a starting price in the $50,000s, it's a great value, too. The Mercedes-Benz S-Class lineup is more diverse than it's ever been and is still the benchmark by which all full-size luxury cars should be measured.

TCC Likes

TCC Dislikes

Fuel Economy

City

19 mpg Coming Soon 14 mpg

Highway

29 mpg Coming Soon 22 mpg

Vehicle

EPA Classification

Large Cars Large Cars Subcompact Cars

Number of Passenger Doors

- 4 -

Interior Dimensions

Passenger Volume (ft³)

121.9 - TBD - -

Front Shoulder Room (in)

59.1 58.3 60.6

Second Leg Room (in)

42.9 40.4 -

Passenger Capacity

5 5 4

Front Leg Room (in)

41.4 46.4 -

Second Head Room (in)

39.1 38.06 36.7

Second Shoulder Room (in)

57.8 56.2 54.1

Front Head Room (in)

37.2 40.2 40

Second Hip Room (in)

- 53.5 -

Front Hip Room (in)

- 55.9 -

Exterior Dimensions

Length, Overall (in)

207.4 204.1 198.6

Height, Overall (in)

57.9 58.0 56.2

Track Width, Rear (in)

64.4 64.0 64.9

Wheelbase (in)

122.9 122.4 115.9

Width, Max w/o mirrors (in)

76.7 74.0 75.3

Track Width, Front (in)

64.7 63.4 64.7

Min Ground Clearance (in)

- - TBD - -

Liftover Height (in)

- - TBD - -

Cargo Area Dimensions

Trunk Volume (ft³)

14.2 10.6 8.8

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 - 14.2

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 15.6 21.1

Steering

Turning Diameter - Curb to Curb (ft)

41.7 - TBD - -

Steering Type

Rack-Pinion Electric Rack & Pinion Rack-Pinion

Steering Ratio (:1), Overall

- - TBD - -

Lock to Lock Turns (Steering)

- - TBD - -

Turning Diameter - Wall to Wall (ft)

- - TBD - -

Tires

Front Tire Size

P255/45HR19 P235/50R18 P255/40YR20

Spare Tire Size

Compact NA NA

Front Tire Order Code

NA RHI NA

Spare Tire Order Code

NA NA NA

Rear Tire Size

P255/45HR19 P265/45R18 P285/35YR20

Rear Tire Order Code

NA RHI NA

Weight Information

Base Curb Weight (lbs)

4464 - TBD - 4817

Wheels

Spare Wheel Size (in)

Compact NA NA

Rear Wheel Material

Aluminum Aluminum Aluminum

Rear Wheel Size (in)

19 X 9 18 x 8.5 20 X 9.5

Front Wheel Material

Aluminum Aluminum Aluminum

Spare Wheel Material

Aluminum NA NA

Front Wheel Size (in)

19 X 9 18 x 8 20 X 8.5

Electrical

Maximum Alternator Capacity (amps)

190 - TBD - 150

Cold Cranking Amps @ 0° F (Primary)

- - TBD - 520

Engine

SAE Net Torque @ RPM

325 @ 2900 295 @ 1700-5500 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/Plug-in Electric I4 Twin Turbo Premium Unleaded V-8

Fuel System

Gasoline Direct Injection Direct Injection Gasoline Direct Injection

Mileage

Fuel Economy Est-Combined (MPG)

22 26 17

EPA Fuel Economy Est - Hwy (MPG)

29 - TBD - 22

EPA Fuel Economy Est - City (MPG)

19 - TBD - 14

Transmission

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 1 7

Eighth Gear Ratio (:1)

0.67 - TBD - -

Drivetrain

All Wheel Drive Rear Wheel Drive All Wheel Drive

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 MRD 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 Continuously Variable Ratio Automatic w/OD

Sixth Gear Ratio (:1)

1.00 - TBD - 0.82

Clutch Size (in)

- NA -

Summary

Vehicle Name

Audi A8 L Cadillac CT6 Mercedes-Benz S-Class

Body Style

quattro LWB Sedan Sedan 4MATIC Cabriolet

Suspension

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

Suspension Type - Front

Multi-Link Independent Multi-Link

Shock Absorber Diameter - Front (mm)

- - TBD - -

Stabilizer Bar Diameter - Front (in)

- - TBD - -

Shock Absorber Diameter - Rear (mm)

- - TBD - -

Stabilizer Bar Diameter - Rear (in)

- - TBD - -

Emissions

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

8.1 - TBD - 10.3

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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