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United Kingdom market

Buick GNX

1987–1987

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  • Lowest price

    £29,120

    Since 2020

  • Median price

    £29,120

    Since 2020 · n=1

  • Highest price

    £29,120

    Since 2020

  • Sold cars

    1

    All time

  • Sell-through

    100%

    Of 1 lots

Buick GNX

Based on 1 verified auction result

HOLDAppreciatingmedium confidence

£125,187

Market value · recent verified sales

+25.0%

12-month change

Hold or Wait

Appreciating but pace slowing. Patient buyers may find better entry.

Median sold price up 25.0% over the last 12 months. Hold if owned; chasing the trend at peak carries risk.

MSRP

—

Collectibility

9/10

Holy Grail

3-Year Forecast

£249,652

+99%

5-Year Forecast

£315,654

+152%

Estimates pool 8 verified sales across United States, United Kingdom — cross-market prices FX-adjusted at Jul 2026 rates.

Track the GNX

One email when its market signal flips or one lists under market — plus the Friday deals roundup.

Signal flips, under-market listings and the Friday deals email. Unsubscribe any time.

Market scores

38

Desirability

Illiquid

10

Liquidity

Excellent

85

Resale Outlook

Marque analyst note

The Buick GNX has climbed to a median of £125,187 in the UK market, representing a 25 percent year-on-year gain. This sharp appreciation arrives on a HOLD signal, suggesting consolidation rather than urgent momentum, though the small transaction sample—just one sale tracked over twelve months—warrants caution in drawing broad conclusions.

As an appreciating classic with Holy Grail collectibility status, the GNX commands outsized prestige relative to its 547-unit production run. The model's rarity and American muscle-car pedigree underpin its position at the apex of desirability among specialists, yet paradoxically current market interest appears confined to a narrow buyer base in the UK.

Liquidity remains the critical constraint. With zero active listings and only one transaction recorded in the past year, the market is effectively illiquid. Sellers should expect extended holding periods and the need to court international buyers directly; conversely, those seeking acquisition will face significant search time and likely face limited negotiating leverage once a car surfaces.

Base projections suggest the GNX could reach £249,652 within three years—a near-doubling—and climb further to £315,654 over five years, implying cumulative appreciation of 152 percent. These forecasts rest on continued supply scarcity and sustained collector appetite for rare American performance icons, though the thinness of current trading data means confidence in near-term trajectories remains moderate.

The apparent disconnect between Holy Grail status and low current desirability reflects the GNX's niche appeal within the UK market. Ownership remains concentrated among devoted American-car enthusiasts, and broader market awareness among casual collectors has yet to materialize. The combination of extreme rarity, proven long-term value trajectory, and present illiquidity suggests patience will reward holders willing to sit out near-term volatility.

Depreciation Benchmark

  • Current avg value£125,187
  • Annual appr. rate+25.0%/yr
  • Segment average+3.0 to +9.5%/yr
This model holds value better than its segment average — strong long-term hold.

Vehicle History Signals

  • Auction lots tracked10
  • Damage or salvage declared0 (0.0%)
  • No damage declared10 (100.0%)
No damage or salvage declarations found in the titles and descriptions of the auction lots we track for this model. That's a good sign, not a guarantee — always commission a professional inspection and history check before buying.

Est. Annual Ownership Costs

  • Insurance (agreed value)£1,000
  • Maintenance£2,400
  • Storage£2,400
  • Depreciation— (appreciating)
  • Total annual cost£5,800
This car has historically appreciated — carrying cost is offset by value growth, not eroded by depreciation.

Market Liquidity

  • Active Listings0
  • Sales Last 12 Months1
  • Sell-Through100%

Market Snapshot

  • Active Listings0
  • Avg Sale Price£29,120
  • Avg Mileage at Sale—
  • Recent Price Range£29,120 – £29,120
  • Total Sales Tracked1

Recent sales

  • €29,120

    bonhams · 28 Nov 2025

Common questions

What is a Buick GNX worth in 2026?

The current United Kingdom market median is £125,187, based on 8 verified auction sales. Recent sales ranged from £29,120 to £29,120.

Is the Buick GNX going up in value?

Over the last 12 months its United Kingdom median moved +25.0%. Past movement is not a guarantee of future value.

How many Buick GNXs are for sale right now?

No live auction listings tracked right now — new lots are swept in several times a day, and you can follow the model to be notified.

Indicative only — not investment advice. Past performance is not a reliable indicator of future value.