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2021 Audi

S8

Auto (S8), 8 cyl, 4.0 L, Turbo

Audi S8: best and worst years
2021 Audi S8 (photo 1 of 3)
PhotoAlexander MiglCC BY-SA 4.0Wikimedia Commons

Overview

Body
Large CarsEPA, from EPA, last updated 6/11/2026
Drivetrain
All-Wheel DriveEPA, from EPA, last updated 6/11/2026
Transmission
Automatic (S8)EPA, from EPA, last updated 6/11/2026
Powertrain
HybridEPA, from EPA, last updated 6/11/2026
Fuel
PremiumEPA, from EPA, last updated 6/11/2026

Engine & performance

Cyl
8EPA, from EPA, last updated 6/11/2026
Aspiration
TurbochargedEPA, from EPA, last updated 6/11/2026
Start-stop system
YesEPA, from EPA, last updated 6/11/2026

Efficiency

MPG Hwy
22 mpgEPA, from EPA, last updated 6/11/2026
MPG City
13 mpgEPA, from EPA, last updated 6/11/2026
MPG Comb
16 mpgEPA, from EPA, last updated 6/11/2026
Fuel $/yr
$4,800EPA, from EPA, last updated 6/11/2026
CO₂
545 g/miEPA, from EPA, last updated 6/11/2026
Eco Score
2/10EPA, from EPA, last updated 6/11/2026
Smog score
3/10
Elec. Range
0 miEPA, from EPA, last updated 6/11/2026
SmartWay certified
No

Dimensions & capacity

Length
204 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Width
77 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Height
58 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Wheelbase
118 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Curb Weight
5,313 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Pass. Vol
111 ft³EPA, from EPA, last updated 6/11/2026
Cargo Vol
13 ft³EPA, from EPA, last updated 6/11/2026

Safety NHTSA, model year

Stability control (ESC)
Standard
Forward-collision warning
Standard
Lane-departure warning
Standard
Recalls
8
Owner complaints
1

Feature availability

Which features come standard, cost extra, or are locked to a pricier trim arrives with the next data phase. Standard equipment shows here today.

Standard

Reported problems NHTSA owner complaints, model year

  • ELECTRICAL SYSTEM33%
  • ENGINE33%
  • POWER TRAIN33%

Source: NHTSA owner complaints, 3 total.

Audi S8: best and worst years

Warranty manufacturer terms, by make

Basic
4 yr / 50k mi
Powertrain
4 yr / 50k mi
Roadside assistance
4 yr
Maintenance
3 yr / 30k mi
EV battery
8 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.