2018 Audi S4
The 2018 Audi S4 is a compact car, rated at 24 MPG combined by the EPA. NHTSA lists 2 recalls for this model year.

- Combined MPG
- 24
- NHTSA safety
- Not rated
- Starting price
- $56,000
- Recalls
- 2
Watch: S4 reviews
Full specifications
Identity
SRC · NHTSA vPIC| Make | Audi |
|---|---|
| Model | S4 |
| Model year | 2018 |
| Vehicle class | Compact Car |
Engine & drivetrain
SRC · EPA FuelEconomy| Displacement | 3 L |
|---|---|
| Cylinders | 6 |
| Transmission | Automatic (AM-S8) |
| Drivetrain | All-Wheel Drive |
| Fuel | Premium Gasoline |
Fuel economy
SRC · EPA FuelEconomy| City MPG | 21 |
|---|---|
| Highway MPG | 30 |
| Combined MPG | 24 |
| CO₂ tailpipe | 374 g/mi |
| EPA annual fuel cost | $3200 |
Fuel economy
SRC · EPA FuelEconomy| City | 21 MPG |
|---|---|
| Highway | 30 MPG |
| Combined | 24 MPG |
Efficiency vs class average
About 24% below the class average.
- Amount financed
- $50,400
- Total interest
- $8,768
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≈ $1,675/yr · 12,000 mi/yr · $3.35/gal
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Cost to own
Estimate monthly payments and 5-year fuel cost using the tools in the sidebar. Figures use EPA fuel economy and current U.S. energy prices from EIA.
Safety ratings & recalls
SRC · NHTSA vPIC- Rollover
Recalls (2)
- AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE19V547000 · 2019-07-24
Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi RS5 Sportback, 2018 S5 Cabriolet, S5 Sportback, S5 Coupe, S4 Sedan, A5 Cabriolet, A5 Sportback, A5 Coupe, and 2017-2018 A4 Sedan and A4 Allroad vehicles. Oxidation on the Passenger Occupant Detection System (PODS) connecting cable may cause the software to misdiagnose a malfunction and disable the passenger air bag.
Remedy: Audi will notify owners, and dealers will install cable ties to the harness, free of charge. The recall began September 9, 2019. Owners may contact Volkswagen customer service at 1-800-893-5298. Audi's number for this recall is 74D9.
- SEATS21V874000 · 2021-11-10
Volkswagen Group of America, Inc. (Audi) is recalling certain 2017-2020 A4 Allroad, A4 Sedan, 2018-2019 RS5 Coupe, 2019 RS5 Sportback, 2018-2020 A5 Cabriolet, A5 Coupe, A5 Sportback, S4 Sedan, S5 Cabriolet, S5 Coupe, and Audi S5 Sportback vehicles. The cable connecting the seat heater to the Passenger Occupant Detection System (PODS) may have a contact fault, causing the software to misdiagnose a malfunction and disable the passenger air bag.
Remedy: Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of charge. Owner notification letters were mailed January 7, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 74E3. This recall is an expansion of Recall 19V-547 (74D9). Vehicles previously repaired under 19V-547 will need to return for the new remedy.
Compare with rivals
All model years
Frequently asked questions
What is the MPG of the 2018 Audi S4?
The 2018 Audi S4 is EPA-rated at 24 MPG combined (21 city / 30 highway).
Is the 2018 Audi S4 reliable?
NHTSA lists 2 recalls for the 2018 Audi S4. Recalls are repaired free of charge by the manufacturer — verify any open recalls by VIN before purchase.
How much does it cost to fuel the 2018 Audi S4?
At 12,000 miles per year, the 2018 Audi S4 costs roughly $1,675 per year to fuel, or about $8,375 over 5 years at current U.S. energy prices.
What type of vehicle is the 2018 Audi S4?
The 2018 Audi S4 is classified as a compact car. Common rivals in this class are worth comparing on price, MPG, and safety.
Sources: NHTSA vPIC · EPA FuelEconomy · NHTSA vPIC