“Great overall vehicle. It has the ability to be a comfortable luxury machine and an exciting canyon carver”
2018 Audi S4: What's New, Specs & Features
Last updated August 4, 2026
The 2018 Audi S4 is fully redesigned, marking the U.S. debut of the B9 generation. Its biggest change is a new 354-hp turbocharged V6, which replaces the previous supercharged engine.
About the 2018 Audi S4
5th generation S4 (B9), first U.S. model year before the 2020 refresh
Audi positions the S4 as a quick, all-weather sport sedan that blends serious pace with everyday usefulness and high-end technology. The press release stresses enhanced performance, benchmark technology, dynamic design, and versatility, while reviewers highlight the car’s quiet cabin, strong real-world acceleration, and polished interior quality. Its main draw versus rivals is balance: standard AWD, a premium cabin, and performance that is fast and confident without looking flashy.
The 2018 S4 is a well-equipped sport sedan offered in Premium Plus and Prestige trims, both with the same turbo V6, eight-speed automatic, and standard all-wheel drive. Premium Plus has massaging sport seats, smartphone integration, and a 19-speaker Bang & Olufsen audio system. Prestige adds a digital instrument cluster, a head-up display, a larger navigation screen, and a top-view camera.
What changed, by category
Powertrain
A new 354-hp, 3.0-liter turbocharged V6 with 369 lb-ft replaces the previous supercharged V6. An eight-speed automatic is the only transmission, paired with standard quattro all-wheel drive.
Structural
The S4 moves to the new B9 generation with a redesigned chassis and suspension.
Styling
The redesign brings full LED headlights and LED taillights with sweeping turn signals across both trims.
Tech
The new cabin adds standard Apple CarPlay and Android Auto, massaging sport seats, and a 19-speaker Bang & Olufsen audio system. Prestige adds a digital instrument cluster, an 8.3-inch navigation screen with touch control, a head-up display, and a top-view camera.
Safety
The redesigned S4 gains a broader foundation of driver-awareness technology, while Prestige adds extra driver-awareness features and a top-view camera system.
2018 Audi S4 specs and features by trim
| Feature | ||
|---|---|---|
| Engine | V6, Turbo, 3.0 Liter | V6, Turbo, 3.0 Liter |
| Transmission | Auto, 8-Spd Tiptronic | Auto, 8-Spd Tiptronic |
| Drivetrain | Quattro AWD | Quattro AWD |
| Fuel Type | Gas | Gas |
| MPG City | 21 mpg | 21 mpg |
| MPG Highway | 30 mpg | 30 mpg |
| Horsepower | 354 hp | 354 hp |
| Torque | 369 lb-ft | 369 lb-ft |
| Trunk/Cargo | 13 cu-ft | 13 cu-ft |
| Rear Legroom | 35.7 in | 35.7 in |
| Seats | 5 | 5 |
| Doors | 4 | 4 |
| Adaptive Cruise Control | ||
| Alarm System | ||
| Automatic High Beams | ||
| Blindspot Sensors | ||
| Active Lane Keep Assistance | ||
| Rear View Camera | ||
| Top View Camera | ||
| Alloy Wheels | ||
| Fog Lights | ||
| LED Headlights | ||
| Power Moonroof | ||
| Rear Spoiler | ||
| Roof Rails | ||
| Head-Up Display | ||
| Navigation System | ||
| Premium Audio | ||
| Smartphone Interface | ||
| Heated Front Seats | ||
| Heated Steering Wheel | ||
| Leather Seats | ||
| Proximity Keyless Entry | ||
| Push-Button Engine Start | ||
| Remote Start | ||
| Ventilated Front Seats | ||
Frequently asked questions
What is the biggest change to the 2018 Audi S4?
The biggest change is a full redesign. The 2018 S4 starts the B9 generation in the U.S. with a new turbocharged V6, redesigned chassis and suspension, and a more modern cabin.
What engine does the 2018 Audi S4 have?
The 2018 Audi S4 has a 3.0-liter turbocharged V6 producing 354 horsepower and 369 lb-ft of torque. It replaces the previous supercharged V6 and comes with standard all-wheel drive.
Does the 2018 Audi S4 have a manual transmission?
No. Every 2018 Audi S4 uses an eight-speed automatic transmission paired with standard quattro all-wheel drive.
What is the difference between the 2018 S4 Premium Plus and Prestige?
Prestige has the same engine and performance hardware as Premium Plus but adds more cabin and camera technology. Its main upgrades are a digital instrument cluster, an 8.3-inch navigation screen with touch control, a head-up display, and a top-view camera.
Is the 2018 Audi S4 substantially different from the 2017 model?
Yes. The 2018 S4 is a new generation with a turbocharged V6 in place of the previous supercharged engine, an eight-speed automatic as its only transmission, a new chassis and suspension, and updated cabin technology.
2018 Audi S4 Reviews
What owners are saying about the 2018 Audi S4.
4.5
2018 Audi S4
(105 reviews)
“The new Audi S4's mixture of performance and comfort make it one of the best sports sedans out there.”
“Best performance/luxury bang for buck- lux cruiser when you want it, canyon carver when you want that.”