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FinalBid / Copart + IAAI

2018 Honda Civic Si auction results: final bids and sale history

FinalBid holds 1,803 completed Copart and IAAI auctions for 2018 Honda Civic Si. Across 1,684 recorded USD final bids, the median sold price is $5,300. Most of those cars were sold with front end. Half of the 755 verified odometer readings sit above 94,981 mi. The oldest auction in the archive closed in Jun 14, 2019, the newest in Oct 23, 2026. Auction results for the 2018 Honda Civic Si at Copart and IAAI. Each sold lot below shows the final bid together with the damage, odometer and title that explain it, so you can see where a particular 2018 Honda Civic Si belongs in the sold-price range rather than guessing at an average.

$5,100
Median final bid
$3,750–$6,094
Middle half
$7,070
Top 10% from
$14,700
Highest

Price index

Median final bid by month (line) and number of sales (bars), last 12 months.

$3,400 $4,270 $5,130 $6,000 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct $5,250

Where they go

Buyer country of the winning bid, with the median price and model year each market buys. Shares of 359 sales with a known buyer country.

Buyer country Share Median final bid Median model year
United States
63%
$5,125 2018
Mexico
30%
$5,300 2018
Guatemala
3%
$3,550 2018
El Salvador
2%
$3,800 2018
Honduras
2%
$2,725 2018
Bahamas
0.3%
$6,700 2018
Moldova
0.3%
$6,700 2018
Poland
0.3%
$4,125 2018

Country totals only. Individual lots do not show the buyer's country.

Copart vs IAAI

Copart 276 sold median $5,050
IAAI 198 sold median $5,150

Last 12 months · updated October 14, 2026

Civic Si years

2026 2025 2024 2023 2022 2020 2019 2018 2007 2006 2005 1925

Honda models

Accord ACTY Civic Civic Si Civic Type R Clarity CR-V CR-Z Crosstour CRX Del Sol Element Fit HR-V Insight Integra Legend NSX Odyssey Passport Pilot Prelude Prologue Ridgeline S2000 Shadow

Auction archive FAQ

How much does a 2018 Honda Civic Si sell for at Copart and IAAI?

Over the last 12 months the median final bid for a 2018 Honda Civic Si was $5,100; half of the 474 sales went for $3,750 to $6,094.

Where do 2018 Honda Civic Si cars from US auctions go?

Among sales with a known buyer country: United States (63%), Mexico (30%), Guatemala (3%).

Is a 2018 Honda Civic Si cheaper at Copart or IAAI?

Median final bid over the last 12 months: Copart $5,050, IAAI $5,150.

How much does a 2018 Honda Civic Si sell for at auction?

The auction results listed here are the answer — every 2018 Honda Civic Si lot carries its own final bid. Read the range and place your car inside it instead of trusting one figure.

What pushes a 2018 Honda Civic Si final bid to the bottom of the range?

Water and fire losses, missing keys, deployed airbags and a branded title. Any two of those together usually explain a sold price that looks improbably low.

VIN history beyond the auction

Look past the final bid on any 2018 Honda Civic Si

Title brands, accident reports and odometer entries: the VIN history behind any auction lot.

Example VIN history →