United Kingdom · verified auction sales
1999 Mercedes-Benz SL (R129) value.
The median 1999 SL sold for £16,500 across 2 verified United Kingdom auction sales. That’s a +83% premiumvs the model’s all-years median.
1999 SL sales — all markets
Fewer than 3 United Kingdom sales for this year — showing every market for a fuller picture.
| Sold | Lot | Price | Mileage | Market |
|---|---|---|---|---|
| 30 Sept 2026 | 1999 Mercedes-Benz SL500 | US$13,500 | — | United States |
| 26 Sept 2026 | 1999 Mercedes-Benz SL500 Convertible | US$10,450 | — | United States |
| 1 Sept 2026 | 1999 Mercedes-Benz SL500 | US$15,250 | — | United States |
| 31 Aug 2026 | 1999 Mercedes-Benz SL500 | US$9,500 | 79,000 | United States |
| 30 Aug 2026 | 1999 Mercedes-Benz SL500 | US$25,000 | 65,000 | United States |
| 2 Aug 2026 | 1999 Mercedes-Benz SL500 | US$14,750 | — | United States |
| 28 Jul 2026 | 1999 Mercedes-Benz SL500 | US$9,500 | — | United States |
| 20 Jul 2026 | 1999 Mercedes-Benz SL500 | US$26,300 | 60,000 | United States |
| 9 Jul 2026 | 1999 Mercedes-Benz SL500 | US$19,000 | 60,000 | United States |
| 16 May 2026 | 1999 Mercedes-Benz SL500 | US$22,500 | 50,000 | United States |
| 6 May 2026 | 32k-Mile 1999 Mercedes-Benz SL500 | US$29,000 | 32,000 | United States |
| 21 Apr 2026 | 11k-Mile 1999 Mercedes-Benz SL500 | US$40,250 | 11,000 | United States |
| 19 Apr 2026 | 1999 Mercedes-Benz SL500 | US$14,500 | 77,000 | United States |
| 14 Apr 2026 | 33k-Mile 1999 Mercedes-Benz SL500 | US$24,500 | 33,000 | United States |
| 10 Apr 2026 | 1999 Mercedes-Benz (R129) SL320 | $26,750 | — | Australia |
| 23 Dec 2024 | 1999 Mercedes-Benz (R129) SL320 | £8,000 | — | United Kingdom |
| 10 Mar 2024 | 1999 Mercedes-Benz (R129) SL 600 | £25,000 | — | United Kingdom |
Indicative only — not investment advice. Past performance is not a reliable indicator of future value.