Compare 2018 Audi A8 vs 2018 Mercedes-Benz S Class

2018 Audi A8
2018 Mercedes-Benz S Class
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3.0 TFSI
Style MPG City MPG Hwy Invoice MSRP
3.0 TFSI 19 29 $76,726 $82,500
4.0 TFSI Sport 16 26 $85,560 $92,000
4.0 TFSI 14 24 $107,788 $115,900
Select style
Sedan S 450
Style MPG City MPG Hwy Invoice MSRP
Sedan S 450 19 28 $83,607 $89,900
4MATIC Sedan S 450 18 28 $86,397 $92,900
Sedan S 560 17 27 $92,907 $99,900
4MATIC Sedan S 560 17 27 $95,697 $102,900
4MATIC Coupe S 560 17 27 $115,785 $124,500
Cabriolet S 560 17 26 $123,969 $133,300
4MATIC Sedan AMG S 63 17 26 $137,175 $147,500
4MATIC Coupe AMG S 63 17 27 $155,961 $167,700
4MATIC Sedan Maybach S 560 16 25 $156,798 $168,600
4MATIC Cabriolet AMG S 63 15 24 $166,935 $179,500
Sedan Maybach S 650 13 21 $184,791 $198,700
Sedan AMG S 65 13 22 $213,435 $229,500
Coupe AMG S 65 13 21 $222,177 $238,900
Cabriolet AMG S 65 14 21 $233,337 $250,900
Pricing
Invoice Price
$76,726
$83,607
Manufacturer Suggested Retail Price
$82,500
$89,900
Monthly Payment Estimate
$1375 / month
$1498 / month
The Car Connection's Take
TCC Rating
7.8
8.4
TCC’s Bottom Line
The 2018 Audi S8 is a speed machine that's the ultimate sleeper. Spot one and stare—it'll likely be gone just as quickly. The 2018 Mercedes-Benz continues to push the envelope for comfort. safety, and autonomous driving aids, while improving upon its effortless power and dignified road manners.
TCC Likes
TCC Dislikes
Fuel Economy
City
19 mpg 19 mpg
Highway
29 mpg 28 mpg
Vehicle
EPA Classification
Large Cars Large Cars
Interior Dimensions
Second Shoulder Room (in)
57.8 59.1
Front Head Room (in)
37.2 42.1
Passenger Volume (ft³)
121.9 -
Front Shoulder Room (in)
59.1 59.7
Second Leg Room (in)
42.9 43
Passenger Capacity
5 5
Front Leg Room (in)
41.4 41.4
Second Head Room (in)
39.1 39.2
Front Hip Room (in)
- 61.2
Second Hip Room (in)
- 61.5
Exterior Dimensions
Length, Overall (in)
207.4 206.5
Height, Overall (in)
57.9 58.9
Track Width, Rear (in)
64.4 63.2
Wheelbase (in)
122.9 124.6
Width, Max w/o mirrors (in)
76.7 74.8
Track Width, Front (in)
64.7 63
Min Ground Clearance (in)
- 5
Cargo Area Dimensions
Trunk Volume (ft³)
14.2 18.7
Brakes
Front Brake Rotor Diam x Thickness (in)
15 13.2
Drum - Rear (Yes or )
NA NA
Brake ABS System
4-Wheel 4-Wheel
Disc - Rear (Yes or )
Yes Yes
Rear Brake Rotor Diam x Thickness (in)
14 11.8
Brake Type
4-Wheel Disc 4-Wheel Disc
Rear Drum Diam x Width (in)
NA NA
Disc - Front (Yes or )
Yes Yes
Fuel Tank
Fuel Tank Capacity, Approx (gal)
21.7 20.7
Steering
Turning Diameter - Curb to Curb (ft)
41.7 39
Steering Type
Rack-Pinion Rack-Pinion
Tires
Front Tire Size
P255/45HR19 P245/50HR18
Spare Tire Size
Compact NA
Front Tire Order Code
NA R02
Spare Tire Order Code
NA NA
Rear Tire Size
P255/45HR19 P245/50HR18
Rear Tire Order Code
NA R02
Weight Information
Base Curb Weight (lbs)
4464 -
Wheels
Spare Wheel Size (in)
Compact NA
Rear Wheel Material
Aluminum Aluminum
Rear Wheel Size (in)
19 X 9 18 X 8
Front Wheel Material
Aluminum Aluminum
Spare Wheel Material
Aluminum NA
Front Wheel Size (in)
19 X 9 18 X 8
Electrical
Maximum Alternator Capacity (amps)
190 150
Cold Cranking Amps @ 0° F (Primary)
- 520
Engine
SAE Net Torque @ RPM
325 @ 2900 369 @ 1600
Engine Order Code
NA NA
Displacement
3.0 L/183 3.0 L/182
SAE Net Horsepower @ RPM
333 @ 5500 362 @ 5500
Engine Type
Intercooled Supercharger Premium Unleaded V-6 Twin Turbo Premium Unleaded V-6
Fuel System
Gasoline Direct Injection Gasoline Direct Injection
Mileage
Fuel Economy Est-Combined (MPG)
22 22
EPA Fuel Economy Est - Hwy (MPG)
29 28
EPA Fuel Economy Est - City (MPG)
19 19
Transmission
Sixth Gear Ratio (:1)
1.00 1.00
First Gear Ratio (:1)
4.71 5.50
Final Drive Axle Ratio (:1)
3.20 2.47
Third Gear Ratio (:1)
2.11 2.31
Trans Type
8 9
Eighth Gear Ratio (:1)
0.67 0.72
Drivetrain
All Wheel Drive Rear Wheel Drive
Fifth Gear Ratio (:1)
1.28 1.21
Trans Description Cont. Again
NA NA
Reverse Ratio (:1)
3.32 4.93
Second Gear Ratio (:1)
3.14 3.33
Trans Order Code
NA 421
Seventh Gear Ratio (:1)
0.84 0.86
Fourth Gear Ratio (:1)
1.67 1.66
Trans Description Cont.
Automatic w/OD Automatic w/OD
Summary
Vehicle Name
Audi A8 L Mercedes-Benz S-Class
Body Style
quattro LWB Sedan Sedan
Suspension
Suspension Type - Front
Multi-Link Multi-Link
Suspension Type - Front (Cont.)
Multi-Link Multi-Link
Suspension Type - Rear
Multi-Link Multi-Link
Suspension Type - Rear (Cont.)
Multi-Link Multi-Link
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
8.1 8.1

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