Live US dealer listings Median-priced benchmark Updated 2026-10-15
Market price · Used 2018 Audi A4 337 listings tracked

Used 2018 Audi A4 Price in the US

A used 2018 Audi A4 in the US typically lists for $13,980–$17,998, with a median asking price of $15,897 across 337 active US dealer listings (as of 2026-10-15). The cheapest one listed right now is $6,590, a 2018 Premium in Miami, FL — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

Used 2018 Audi A4 · asking prices337 listings
$10k$22k
Typical range
$13,980 – $17,998
Median
$15,897
Cheapest 5%
under $10,571
Cheapest listed now
$6,590

Browse by model year

typical price per year
More years (18)

Cheapest 10 listed right now

ranked by price
  1. 2018 Audi A4
    $6,590
    2018 Audi A4 Premium
    117,540 mi · Miami, FL · Lions Pre-Owned Miami
    View listing →
  2. $8,089
    2018 Audi A4 Premium Plus S
    123,203 mi · Miami, FL · Lions Pre-Owned Miami
    View listing →
  3. 2018 Audi A4
    $8,900
    2018 Audi A4 Premium
    139,616 mi · Brook, IN · US 41 Motor Sales
    View listing →
  4. 2018 Audi A4
    $8,900
    2018 Audi A4 Premium Plus S
    155,072 mi · Orlando, FL · Sell Your Auto Fast
    View listing →
  5. 2018 Audi A4
    $8,990
    2018 Audi A4 Premium
    128,956 mi · Dallas, TX · Texas Drive Auto Dealer
    View listing →
  6. 2018 Audi A4
    $9,397
    2018 Audi A4 Premium Plus S
    108,333 mi · Parma, OH · Vehicle Selection
    View listing →
  7. 2018 Audi A4
    $9,500
    2018 Audi A4 Quattro Premium Plus
    174,599 mi · Opelousas, LA · Up City Auto Sales
    View listing →
  8. $9,900
    2018 Audi A4 Quattro Premium Plus
    136,032 mi · Montrose, CO · You Sell Auto Montrose
    View listing →
  9. 2018 Audi A4
    $9,980
    2018 Audi A4 Premium
    94,874 mi · Jacksonville, FL · United Imports Inc
    View listing →
  10. 2018 Audi A4
    $9,995
    2018 Audi A4 Premium
    119,691 mi · Houston, TX · Heights Motor Credit Inc
    View listing →

These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2018 Audi A4 asks $13,980–$17,998. Cars this far under: expect high mileage, a base trim or a branded title — check the vehicle history.

FAQ

How much does a used 2018 Audi A4 cost?

A used 2018 Audi A4 in the US typically lists for $13,980 to $17,998, with a median asking price of $15,897 across 337 active US dealer listings. Nine in ten are priced between $10,571 and $21,627 (as of 2026-10-15, source: UnderMarket Cars).

Is $16,000 a good price for a used 2018 Audi A4?

That sits at about the market median ($15,897) for a used 2018 Audi A4. Under $13,980 puts you in the cheapest quarter of active US listings and under $10,571 in the cheapest 5%; above $21,627 is the priciest 5% (as of 2026-10-15).

What is the cheapest used 2018 Audi A4 for sale right now?

$6,590 — a 2018 Audi A4 Premium in Miami, FL, $9,307 under the median (as of 2026-10-15).

Are these MSRP or real asking prices?

Real asking prices from active US dealer listings, deduplicated by VIN — not manufacturer MSRP. They already reflect dealer discounts, and they exclude tax, title, registration and dealer fees.

How often are prices updated?

The listing data behind UnderMarket Cars is rebuilt from live US dealer inventory every few hours, and this used 2018 Audi A4 page is regenerated from it when it is requested. The figures on this page are from 2026-10-15.

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Prices updated 2026-10-15. Data covers active dealer listings across the USA.