Live US dealer listings Median-priced benchmark Updated 2026-10-17
Market price · Used 2018 Porsche 718 Cayman 76 listings tracked

Used 2018 Porsche 718 Cayman Price in the US

A used 2018 Porsche 718 Cayman in the US typically lists for $48,171–$64,900, with a median asking price of $52,994 across 76 active US dealer listings (as of 2026-10-17). The cheapest one listed right now is $37,900, a 2018 Cayman in Tempe, AZ — below 95% of the market, so expect high mileage, a base trim or a branded title — check the vehicle history.

Used 2018 Porsche 718 Cayman · asking prices76 listings
$35k$90k
Typical range
$48,171 – $64,900
Median
$52,994
Cheapest 5%
under $39,947
Cheapest listed now
$37,900

Browse by model year

typical price per year
More years (1)

Cheapest 10 listed right now

ranked by price
  1. $37,900
    2018 Porsche 718 Cayman Cayman
    109,584 mi · Tempe, AZ · Plaza Motors
    View listing →
  2. 2018 Porsche 718 Cayman
    $38,860
    2018 Porsche 718 Cayman Cayman
    92,100 mi · Somis, CA · Private Seller Exchange
    View listing →
  3. 2018 Porsche 718 Cayman
    $39,227
    2018 Porsche 718 Cayman Cayman
    112,284 mi · Norco, CA · All In Auto Group
    View listing →
  4. 2018 Porsche 718 Cayman
    $39,790
    2018 Porsche 718 Cayman Cayman
    87,430 mi · Knoxville, TN · Parkside Auto
    View listing →
  5. $39,999
    2018 Porsche 718 Cayman Cayman
    29,317 mi · Metairie, LA · Auto Imports Metairie
    View listing →
  6. 2018 Porsche 718 Cayman
    $42,998
    2018 Porsche 718 Cayman Cayman
    70,786 mi · East Meadow, NY · CarMax East Meadow
    View listing →
  7. 2018 Porsche 718 Cayman
    $43,845
    2018 Porsche 718 Cayman Cayman
    62,835 mi · Portland, OR · Prime Motor Co
    View listing →
  8. 2018 Porsche 718 Cayman
    $44,499
    2018 Porsche 718 Cayman Cayman
    76,259 mi · Palmetto Bay, FL · HGreg Nissan Kendall
    View listing →
  9. 2018 Porsche 718 Cayman
    $44,990
    2018 Porsche 718 Cayman Cayman
    67,010 mi · Birmingham, AL · Carvana - Birmingham
    View listing →
  10. $45,065
    2018 Porsche 718 Cayman Cayman
    37,038 mi · Sherman Oaks, CA · RPM Motorcars
    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 Porsche 718 Cayman asks $48,171–$64,900. 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 Porsche 718 Cayman cost?

A used 2018 Porsche 718 Cayman in the US typically lists for $48,171 to $64,900, with a median asking price of $52,994 across 76 active US dealer listings. Nine in ten are priced between $39,947 and $86,022 (as of 2026-10-17, source: UnderMarket Cars).

Is $53,000 a good price for a used 2018 Porsche 718 Cayman?

That sits at about the market median ($52,994) for a used 2018 Porsche 718 Cayman. Under $48,171 puts you in the cheapest quarter of active US listings and under $39,947 in the cheapest 5%; above $86,022 is the priciest 5% (as of 2026-10-17).

What is the cheapest used 2018 Porsche 718 Cayman for sale right now?

$37,900 — a 2018 Porsche 718 Cayman Cayman in Tempe, AZ, $15,094 under the median (as of 2026-10-17).

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 Porsche 718 Cayman page is regenerated from it when it is requested. The figures on this page are from 2026-10-17.

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Prices updated 2026-10-17. Data covers active dealer listings across the USA.