Compare 2021 Audi A8 vs 2020 Mercedes-Benz S Class

2021 Audi A8
2020 Mercedes-Benz S Class
#1 in Coupes
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55 TFSI quattro
Style MPG City MPG Hwy Invoice MSRP
A8 L 55 TFSI quattro 17 26 $81,312 $86,500
A8 L 60 TFSI e quattro N/A N/A $90,148 $95,900
A8 L 60 TFSI quattro 15 23 $92,968 $98,900
S8 4.0 TFSI 13 22 $123,048 $130,900
Select style
AMG S 63 4MATIC+ Convertible
Style MPG City MPG Hwy Invoice MSRP
S-Class AMG S 63 4MATIC+ Convertible 15 24 $172,490 $183,500
S-Class AMG S 63 4MATIC+ Coupe 17 27 $161,116 $171,400
S-Class AMG S 63 4MATIC+ Sedan 17 26 $142,504 $151,600
S-Class AMG S 65 Sedan 13 22 $221,464 $235,600
S-Class Maybach S 560 4MATIC Sedan 16 25 $162,620 $173,000
S-Class Maybach S 650 Sedan 13 21 $190,397 $202,550
S-Class S 450 4MATIC Sedan 18 28 $91,415 $97,250
S-Class S 450 Sedan 19 28 $88,595 $94,250
S-Class S 560 4MATIC Coupe 17 26 $122,341 $130,150
S-Class S 560 4MATIC Sedan 17 27 $101,003 $107,450
S-Class S 560 Convertible 17 26 $130,284 $138,600
S-Class S 560 Sedan 17 27 $98,183 $104,450
S-Class S 560e Sedan N/A N/A $103,165 $109,750
Pricing
Invoice Price
$81,312
$172,490
Manufacturer Suggested Retail Price
$86,500
$183,500
Monthly Payment Estimate
$1442 / month
$3058 / month
The Car Connection's Take
TCC Rating
7.2
7.8
TCC’s Bottom Line
A worthy flagship, the 2021 Audi A8 is thoroughly modern and eminently comfortable. The 2020 Mercedes-Benz S-Class is the benchmark for large luxury sedans.
TCC Likes
TCC Dislikes
Fuel Economy
City
17 mpg 15 mpg
Highway
26 mpg 24 mpg
Vehicle
EPA Classification
Large Cars Subcompact Cars
Interior Dimensions
Second Leg Room (in)
44.3 -
Front Leg Room (in)
41.5 -
Passenger Capacity
5 4
Second Head Room (in)
38.5 37.6
Second Shoulder Room (in)
57.6 49.5
Front Head Room (in)
38.3 37.7
Front Shoulder Room (in)
59.1 57
Second Hip Room (in)
- 53.1
Front Hip Room (in)
- 60.6
Exterior Dimensions
Height, Overall (in)
58.6 56
Track Width, Rear (in)
64.3 64.7
Wheelbase (in)
123.2 115.9
Width, Max w/o mirrors (in)
76.6 75.3
Track Width, Front (in)
64.7 64.7
Length, Overall (in)
208.7 198.9
Min Ground Clearance (in)
- 4.5
Cargo Area Dimensions
Trunk Volume (ft³)
12.5 7
Brakes
Disc - Rear (Yes or )
Yes Yes
Rear Brake Rotor Diam x Thickness (in)
13.8 14.2
Brake Type
4-Wheel Disc 4-Wheel Disc
Rear Drum Diam x Width (in)
NA NA
Disc - Front (Yes or )
Yes Yes
Front Brake Rotor Diam x Thickness (in)
14.8 15.4
Drum - Rear (Yes or )
NA NA
Brake ABS System
4-Wheel 4-Wheel
Fuel Tank
Fuel Tank Capacity, Approx (gal)
21.7 24.3
Steering
Steering Type
Rack-Pinion Rack-Pinion
Turning Diameter - Curb to Curb (ft)
42.2 -
Tires
Front Tire Order Code
NA STDTR
Spare Tire Order Code
NA NA
Rear Tire Size
P255/45HR19 P285/35YR20
Rear Tire Order Code
NA STDTR
Front Tire Size
P255/45HR19 P255/40YR20
Spare Tire Size
Compact NA
Weight Information
Base Curb Weight (lbs)
4773 4817
Wheels
Rear Wheel Size (in)
19 X 9 20 X 9.5
Front Wheel Material
Aluminum Aluminum
Spare Wheel Material
Aluminum NA
Front Wheel Size (in)
19 X 9 20 X 8.5
Spare Wheel Size (in)
Compact NA
Rear Wheel Material
Aluminum Aluminum
Engine
Fuel System
Gasoline Direct Injection Gasoline Direct Injection
SAE Net Torque @ RPM
369 @ 1370 664 @ 2750
Engine Order Code
NA NA
Displacement
3.0 L/183 4.0 L/243
SAE Net Horsepower @ RPM
335 @ 5000 603 @ 5500
Engine Type
Intercooled Turbo Gas/Electric V-6 Twin Turbo Premium Unleaded V-8
Mileage
EPA Fuel Economy Est - City (MPG)
17 15
Fuel Economy Est-Combined (MPG)
21 18
EPA Fuel Economy Est - Hwy (MPG)
26 24
Transmission
Fourth Gear Ratio (:1)
1.67 1.66
Trans Description Cont.
Automatic w/OD Automatic w/OD
Drivetrain
All Wheel All Wheel
Sixth Gear Ratio (:1)
1.00 1.00
First Gear Ratio (:1)
4.71 5.50
Seventh Gear Ratio (:1)
0.84 0.86
Final Drive Axle Ratio (:1)
3.08 2.47
Third Gear Ratio (:1)
2.11 2.31
Trans Type
8 9
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
DA 421
Eighth Gear Ratio (:1)
0.67 0.72
Summary
Vehicle Name
Audi A8 L Mercedes-Benz S-Class
Body Style
quattro LWB Sedan 4MATIC+ Cabriolet
Suspension
Suspension Type - Rear
Multi-Link Multi-Link
Suspension Type - Rear (Cont.)
Multi-Link Multi-Link
Suspension Type - Front
Multi-Link Multi-Link
Suspension Type - Front (Cont.)
Multi-Link Multi-Link
Emissions
Tons/yr of CO2 Emissions @ 15K mi/year
8.5 10.0
Electrical
Cold Cranking Amps @ 0° F (Primary)
- 520
Maximum Alternator Capacity (amps)
- 150
Next Steps: Get Free Price Quotes!
2021 Audi A8
  • 2021 Audi A8 is here; 2020s are gone
  • Lease: Up to $6,795 lease cash
  • Rebates: Up to $5,000 cash
  • Finance: From 1.49% APR for 60 months
Get Your Price
2020 Mercedes-Benz S Class
  • 2020 S-Class is in stock
  • Over $13,000 in incentives (S560e)
  • Lease: From $959/month
  • Financing: 2.99% for 72 mo.

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