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United Kingdom market

Mercedes-Benz SL (R129)

1989–2001

Mercedes-Benz SL

Based on 41 verified auction results

HOLDAppreciatingmedium confidence

£13,723

Market value · recent verified sales

+49.0%

12-month change

Hold or Wait

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

Median sold price up 49.0% over the last 12 months. Hold if owned; chasing the trend at peak carries risk.

Price History

Oct 2024Today

MSRP

Collectibility

3/10

Modest Demand

3-Year Forecast

£34,224

+149%

5-Year Forecast

£46,970

+242%

Market scores

50

Desirability

Moderate

55

Liquidity

Excellent

85

Resale Outlook

Spec Premium Engine

How spec moves the price
  • Right-hand drive

    £11,121 median (n=11) vs £90,000,011,924 (n=4)

    -100%

  • Built ≤ 1998

    £15,250 median (n=27) vs £58,750,006,098 (n=14)

    -100%

Computed from this model's verified auction sales. Premiums are the % difference between the median price of matching-spec lots vs the rest. Requires at least 3 sales on each side to be shown.

Marque analyst note

The Mercedes-Benz SL R129 has appreciated sharply in the UK market, climbing 49 percent year-on-year to a median of £13,723. The HOLD signal reflects solid upward momentum tempered by moderate confidence in the broader trend.

Only 14 sales have been tracked over the past twelve months from a total dataset of 41 transactions, suggesting moderate liquidity. This thin sample size means individual sales can skew results, though the consistency across 41 total observations provides reasonable grounding for trend assessment.

The R129 occupies the stable modern classic tier with production of over 213,000 units, positioning it as an accessible entry point rather than a scarcity play. Modest collectibility demand keeps valuations measured; appreciation is driven more by the model's age and usable character than rarity or investment fervor.

Cars tracked have averaged 28,510 miles, typical for UK-market examples of this generation that are now 25+ years old. Low mileage examples command premiums, though most transactions involve well-used, honest examples reflecting owner enjoyment rather than preservation.

The three-year projection sits at £34,224—a 149 percent gain from current levels—while the five-year base case reaches £46,970, implying a 242 percent move. Both figures suggest steady appreciation rather than explosive appreciation, consistent with the stable modern classic classification and gradual shift in collector interest toward the R129's design language and driving experience.

Depreciation Benchmark

  • Current avg value£13,723
  • Annual appr. rate+49.0%/yr

Best time to buy

Monthly price index vs. this model's average

Best deals on this model historically land in Apr (~77% below average). Avoid Jan, when competition drives prices higher.

Est. Annual Ownership Costs

  • Insurance (agreed value)£450
  • Maintenance£900
  • Storage£2,400
  • Depreciation— (appreciating)
  • Total annual cost£3,750
This car has historically appreciated — carrying cost is offset by value growth, not eroded by depreciation.

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Market Liquidity

  • Active Listings0
  • Sales Last 12 Months13
  • Sell-Through32%

Market Snapshot

  • Active Listings0
  • Avg Sale Price£23,013
  • Avg Mileage at Sale28,510 mi
  • Recent Price Range£3,600 – £340,000
  • Total Sales Tracked41

Recent sales

Showing latest 20
  • £31,250

    Collecting Cars · 15 May 2026

  • £7,400

    Collecting Cars · 9 Dec 2025

  • £8,240

    the-market · 3 Dec 2025

  • £9,000

    Collecting Cars · 20 Nov 2025

  • £6,890

    the-market · 12 Nov 2025

  • £15,250

    Collecting Cars · 24 Oct 2025

  • £25,000

    Collecting Cars · 21 Oct 2025

  • £12,195

    the-market · 21 Oct 2025

  • £16,100

    Collecting Cars · 29 Sept 2025

  • £20,250

    Collecting Cars · 1 Sept 2025

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