2018 Audi S4: trims, real prices & how to pick yours

5 builds left the factory as a 2018 S4, each a different combination of engine, transmission and body identified by the first eight characters of its VIN. The 4 main configurations sell for $14,999–$33,991 today.

  • 4 main configurations
  • 3,517 vehicles built
  • 69 for sale right now
  • $14,999–$33,991 typical price range

Which S4 is yours?

Enter a VIN — the 17 characters on the windshield or the title — and we’ll match it to its exact factory configuration, typical price and equipment.

Works with any VIN — a different year or model takes you straight to its own page.

Pick your S4

What actually differs

Quattro Premium Plus, Quattro Progressiv (Canada) · AWD WAUB4AF4-J Quattro Prestige, Quattro Technik (Canada) · AWD Quattro Premium Plus, Quattro Progressiv (Canada) · AWD WAUB4BF4-J
For sale right now 43 2 1
Vehicles built 2,456 77 48
Same on every 2018 S4
  • Engine 3L 6-cyl
  • Power 354 hp
  • Drivetrain All-wheel drive
  • Transmission Automatic
  • Fuel Gasoline
  • Body Sedan
  • Doors 4-door
  • Typical price today $23,116

What people actually pay

93 price observations · updated Aug 30, 2026
Quattro Premium Plus, Quattro Progressiv (Canada) · AWD
$23,116
$14,549 $19,665 $24,780 $29,896 $35,011
Price trend

Median down $2,256 over the last 12 months.

2018 S4 price history →
Will it hold value?

A S4 typically keeps about 61% of its price over 5 years — a 5-year-old one runs about $14,722 today.

S4 depreciation by year →
Cost to run

21/30 mpg city/highway. Roughly $1,940/yr on fuel at 15,000 miles.

EPA estimate for the 2018 S4

Safety, in plain English

What WAUB4AF4-J means

WAU B4AF4 · J
WAU
the World Manufacturer Identifier Audi registered — assembled in Germany
B4AF4
together encode the S4 line — Sedan, 3L 6cyl, All-wheel drive — as Audi filed it, these five characters are read as one block, not letter by letter
J
in position 10 — model year 2018
9, 11–17
differ on every car: check digit, plant code and the serial number
1 rare configuration — mostly fleet, export or irregular VIN patterns. Fewer than 20 known vehicles each.

Already looking at a specific S4?

Paste its VIN — we’ll open that exact car’s page: its configuration, market position and every listing we’ve tracked.

2018 Audi S4 prices →