Mercedes-Benz SL55 AMG vs BMW M6 Convertible
The median verified BMW M6 Convertible sale is $26,625 against $24,000 for the Mercedes-Benz SL55 AMG, from 150 and 134 verified sales respectively. Over the past 12 months the median Mercedes-Benz SL55 AMG sale price is down 7.4% and the median BMW M6 Convertible sale price is up 9.6%, measured against the prior year's median. Every figure is a completed sale, never an estimate or an asking price.
Mercedes-Benz SL55 AMG vs BMW M6 Convertible: the numbers
| Mercedes-Benz SL55 AMG | BMW M6 Convertible | |
|---|---|---|
| Median sale (USD) | $24,000 | $26,625 |
| Sold price range (USD) | $11,000 – $66,000 | $9,900 – $64,000 |
| Verified sales tracked | 150 | 134 |
| Sold, last 12 months | 57 | 31 |
| Median sold, 12-month change | -7.4% | +9.6% |
| Average sale mileage | 50,047 mi | 48,553 mi |
| Model years tracked | 2003–2008 | 2007–2017 |
| For sale now | 6 from $18,490 | 40 from $14,398 |
Medians and ranges are USD completed sales; counts include every tracked currency. The 12-month change compares the past 12 months’ median with the prior 12 months’ and appears only when each window holds at least three sales — it tracks the median of what actually sold, so it moves with the mix of years, trims and mileages that came to market as well as with the market itself. Methodology
The numbers above describe what has already happened at auction. DriveIndex’s Head-to-Head Verdict puts the SL55 AMG and the M6 Convertible side by side on mileage-adjusted fair value, the Value Signal, 1–5 year projections, market liquidity and running costs.
Compare them in the app →Latest verified sales
Recent Mercedes-Benz SL55 AMG sales
| Sep 18, 2026 | $28,555 | 25,000 mi |
| Sep 17, 2026 | $18,750 | 45,000 mi |
| Sep 5, 2026 | $37,500 | 27,000 mi |
| Aug 25, 2026 | $24,000 | 86,900 mi |
| Aug 22, 2026 | $39,750 | 4,300 mi |
Recent BMW M6 Convertible sales
| Sep 2, 2026 | $15,000 | 83,900 mi |
| Sep 1, 2026 | $25,814 | 73,100 mi |
| Jul 21, 2026 | $27,000 | 48,400 mi |
| Jun 2, 2026 | $21,500 | 30,000 mi |
| May 28, 2026 | $16,250 | 37,600 mi |
The five most recent verified sales on each side. The full archive is in the app.
Mercedes-Benz SL55 AMG vs BMW M6 Convertible: Frequently Asked Questions
Is a Mercedes-Benz SL55 AMG more expensive than a BMW M6 Convertible?
BMW M6 Convertible sells for more: the median verified sale is $26,625 against $24,000 for the Mercedes-Benz SL55 AMG. Both medians come from completed auction sales, not estimates or asking prices.
Which sells more often, the Mercedes-Benz SL55 AMG or the BMW M6 Convertible?
The Mercedes-Benz SL55 AMG. 57 Mercedes-Benz SL55 AMG sales and 31 BMW M6 Convertible sales were recorded in the past 12 months, so the Mercedes-Benz SL55 AMG changes hands more often — a rough read on how easy each one is to buy or sell.
Have Mercedes-Benz SL55 AMG or BMW M6 Convertible prices moved more in the past year?
The median Mercedes-Benz SL55 AMG sale price is down 7.4% versus the prior year. The median BMW M6 Convertible sale price is up 9.6% versus the prior year. Both figures describe what has already changed hands, and a model spans many years and mileages, so the mix that came to market moves them as well as the market does. The mileage-adjusted Value Signal and the 1–5 year projections for each car are in the app.
Where do these Mercedes-Benz SL55 AMG vs BMW M6 Convertible numbers come from?
From completed sales at the world's leading collector-car auction houses and marketplaces, verified and normalized by DriveIndex, plus active for-sale listings. Outliers and lots that failed to meet reserve are excluded — a reserve-not-met bid is not a sale.