2004 Buick Century: trims, real prices & how to pick yours

5 builds left the factory as a 2004 Century, each a different combination of engine, transmission and body identified by the first eight characters of its VIN. The 2 main configurations sell for $2,349–$7,995 today.

  • 2 main configurations
  • 3,437 vehicles built
  • 18 for sale right now
  • $2,349–$7,995 typical price range

Which Century 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 Century

What actually differs

Custom 2G4WS52J-4 Custom 2G4WS55J-4
For sale right now 17 1
Vehicles built 3,283 151
Same on every 2004 Century
  • Engine 3.1L 6-cyl
  • Fuel Gasoline
  • Body Sedan
  • Doors 4-door
  • Typical price today $5,500

What people actually pay

30 price observations · updated Aug 30, 2026
Custom
$5,500
$2,278 $3,767 $5,257 $6,746 $8,235
Price trend

Median holding steady over the last 5 months.

2004 Century price history →
Will it hold value?

A Century typically keeps about 78% of its price over 5 years — a 5-year-old one runs about $3,900 today.

Century depreciation by year →
Cost to run

18/27 mpg city/highway. Roughly $2,210/yr on fuel at 15,000 miles.

EPA estimate for the 2004 Century

Safety, in plain English

What 2G4WS55J-4 means

2G4 WS55J · 4
2G4
the World Manufacturer Identifier Buick registered — assembled in Canada
WS55J
together encode the Century line — Sedan, 3.1L 6cyl — as Buick filed it, these five characters are read as one block, not letter by letter
4
in position 10 — model year 2004
9, 11–17
differ on every car: check digit, plant code and the serial number
3 rare configurations — mostly fleet, export or irregular VIN patterns. Fewer than 20 known vehicles each.

Already looking at a specific Century?

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

2004 Buick Century prices →