Used 2018 Audi S4 Premium Plus Sedan 4D
Pricing
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Values and Prices
Fair Purchase Price is determined by collecting thousands of actual consumer vehicle purchase prices, plus data from national vehicle registration databases and several other reliable third-party sources.
Estimated Values
Condition | Trade-In Value | Private Party Value | ||
|---|---|---|---|---|
Excellent | $15,650 | $22,700 | ||
Very Good | $15,200 | $22,100 | ||
Good | $14,700 | $21,300 | ||
Fair | $13,350 | $19,450 |
Estimated Trade-In Values for the 2018 Audi S4 Premium Plus Sedan 4D range from about $13,350 to $15,650 depending on vehicle condition. Estimated Private Party Values range from about $19,450 to $22,700 depending on vehicle condition. Valid for ZIP Code 43085 through 10/7/2026.
2018 Audi S4 Premium Plus Sedan 4D Depreciation
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2018 Audi S4 Premium Plus Sedan 4D Annual Depreciation
Year | Vehicle Depreciation* | Resale Value | Trade-In Value | ||
|---|---|---|---|---|---|
2023 | $6,596 | $25,033 | $21,585 | ||
2024 | $2,470 | $22,563 | $19,277 | ||
2025 | $2,127 | $20,436 | $17,401 | ||
Now | + $864 | $21,300 | $14,700 |
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2-Year Forecasted Depreciation
*Depreciation for the last 12 months of the private party resale value.
2018 Audi S4 Premium Plus Sedan 4D Depreciation
Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.
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Specifications
Dimensions, Weights & Capacities
Curb Weight | 3858 lbs. | ||
|---|---|---|---|
Fuel Capacity | 15.3 gallons | ||
Front Head Room | 38.9 inches | ||
Front Leg Room | 41.3 inches | ||
Max Seating Capacity | 5 | ||
Overall Length | 186.8 inches | ||
Front Shoulder Room | 55.9 inches | ||
Trunk or Cargo Capacity | 13.0 cu.ft. | ||
Turning Diameter | 38.1 feet | ||
Wheel Base | 111.2 inches | ||
Width with mirrors | 79.6 inches |
Exterior
Alloy Wheels | Available | ||
|---|---|---|---|
Fog Lights | Available | ||
Moon Roof/Sun Roof | Available | ||
Number of Doors | 4 doors | ||
Power Folding Exterior Mirrors | Available | ||
Roof Rails | Available | ||
LED Headlights | Available | ||
Rear Spoiler | Available |
Fuel Economy
City | 21 mpg | ||
|---|---|---|---|
Highway | 30 mpg | ||
Combined | 24 mpg |
Mechanical
Drivetrain | AWD | ||
|---|---|---|---|
Transmission Type | Automatic | ||
8 speed | Available | ||
Recommended Fuel | Premium |
Performance
Horsepower | 354 @ 5400 RPM | ||
|---|---|---|---|
Torque | 369 @ 1370 rpm | ||
Engine | V6, Turbo, 3.0 Liter | ||
0 to 60 | 4.4 seconds | ||
Top Speed | 155 mph |
Warranty
Basic | 4 years / 50000 miles | ||
|---|---|---|---|
Powertrain | 4 years / 50000 miles | ||
Corrosion | 12 years / Unlimited miles |
2018 Audi S4 Premium Plus Sedan 4D Standard Features
2018 Audi S4
KBB.com Review
Kbb.com Expert Rating
If you want performance without panache, the 2018 Audi S4 sedan blends all-wheel-drive dynamism and luxury as few others can. With its brawn also comes plenty of brains, highlighted by Audi’s excellent suite of driver-assistance, active safety and tech-laden infotainment offerings.
If you must have rear-wheel drive and/or a manual transmission, look elsewhere. A BMW 340i can grant you both, while a Mercedes C43, Infiniti Q50, V6-powered Cadillac ATS and Jaguar XE 35t offer a rear-drive layout. Crave even more power? Go M3, C63 or keep those fingers crossed for an RS4.
2018 Audi S4
KBB.com Consumer Reviews
Consumer Rating
2018 Audi S4 Premium Plus Sedan 4D Safety
Safety Features & Technology
Compare to Similar Vehicles
 Used 2018 Audi S4 Premium Plus Sedan 4D |  Used 2018 Mercedes-Benz Mercedes-AMG CLA |  Used 2018 Lexus IS |  New 2025 Audi S4 | ||
|---|---|---|---|---|---|
| Price | $23,100 | $23,200 | $21,500 | $56,195 | |
| KBB.com Rating | 4.7 | 4.6 | 4.5 | 4.3 | |
| Consumer Rating | 5.0 | 4.4 | 4.5 | 5.0 | |
| Fuel Economy | City 21/Hwy 30/Comb 24 MPG | City 23/Hwy 30/Comb 26 MPG | City 22/Hwy 32/Comb 26 MPG | City 20/Hwy 29/Comb 24 MPG | |
| Fuel Type | Gas | N/A | N/A | Gas | |
5 Year Cost To Own 5-Year Cost to Own includes out of pocket expenses like fuel and insurance, plus the car’s loss in value over time (depreciation). | N/A | N/A | N/A | $88,066 | |
| Safety Rating | N/A | N/A | 5.0 | N/A | |
| Seating Capacity | 5 | 5 | 5 | 5 | |
| Basic Warranty | 4 years or 50000 miles | 4 years or 50000 miles | 4 years or 50000 miles | 4 years or 50000 miles | |
| Horsepower | 354 @ 5400 RPM | 375 @ 6000 RPM | 241 @ 5800 RPM | 349 @ 6300 RPM | |
| Engine | V6, Turbo, 3.0 Liter | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.0 Liter | V6, Turbo, 3.0 Liter | |
| Drivetrain | AWD | AWD | RWD | AWD |