2018 Audi S8: What's New, Specs & Features
Last updated August 4, 2026
The 2018 Audi S8 is a carryover with no major product changes. Its main significance is that it is the final US model year of the D4 generation.
About the 2018 Audi S8
3rd gen / D4 (2013-2018), final US model year.
The 2018 S8 is Audi’s full-size performance luxury sedan: a large four-door that mixes serious V8 power with a quiet, richly equipped cabin. Its core appeal is understated styling, strong all-weather traction from quattro all-wheel drive, and a balance of driver-focused handling and long-distance comfort. Compared with rivals, the S8 sells itself more on subtle speed and secure road manners than on flashy design.
Audi sold the 2018 S8 in the US only in high-performance S8 plus form, pairing a 605-hp twin-turbo V8 with an eight-speed automatic and all-wheel drive. Its understated luxury cabin includes heated, ventilated, and massaging front seats, navigation, a head-up display, Bose surround sound, and a 360-degree camera system.
2018 Audi S8 specs and features by trim
| Feature | |
|---|---|
| Engine | V8, Twin Turbo, 4.0 Liter |
| Transmission | Auto, 8-Spd Tiptronic Spt |
| Drivetrain | AWD |
| Fuel Type | Gas |
| MPG City | 14 mpg |
| MPG Highway | 24 mpg |
| Horsepower | 605 hp |
| Torque | 517 lb-ft |
| Trunk/Cargo | 14.2 cu-ft |
| Rear Legroom | 38.7 in |
| Seats | 5 |
| Doors | 4 |
| Adaptive Cruise Control | |
| Alarm System | |
| Automatic Emergency Braking | |
| Automatic High Beams | |
| Blindspot Sensors | |
| Active Lane Keep Assistance | |
| Alloy Wheels | |
| Fog Lights | |
| LED Headlights | |
| Power Moonroof | |
| Rear Spoiler | |
| Bluetooth | |
| Head-Up Display | |
| Navigation System | |
| Premium Audio | |
| USB Ports | |
| Heated Front Seats | |
| Heated Steering Wheel | |
| Leather Seats | |
| Proximity Keyless Entry | |
| Ventilated Front Seats | |
Frequently asked questions
What changed on the 2018 Audi S8 compared with the 2017 model?
The 2018 Audi S8 received no major product changes compared with the 2017 model. Its engine, transmission, all-wheel-drive system, styling, safety equipment, infotainment hardware, and suspension setup carried over.
Was 2018 the final year of the D4-generation Audi S8 in the US?
Yes. The 2018 S8 was the final US model year of the D4 generation, which ran from 2013 through 2018.
Did the 2018 Audi S8 receive a new engine?
No. The 2018 S8 retained the 605-hp twin-turbo 4.0-liter V8, eight-speed automatic transmission, and all-wheel drive used previously.
Was the 2018 Audi S8 sold in more than one US trim?
No. Audi sold the 2018 S8 in the US only in S8 plus form, with the 605-hp V8 and performance-tuned suspension setup.
What notable features came on the 2018 Audi S8?
The 2018 S8 combined performance hardware with luxury equipment such as massaging front seats, navigation, a head-up display, Bose surround sound, blind-spot monitoring, and a 360-degree camera system.