Porsche 911 Turbo Cabriolet M505 Slant Nose Market Value & Price History
The Porsche 911 Turbo Cabriolet M505 Slant Nose has a market value of $208,000 to $268,427 depending on year and condition, based on 16 verified auction sales across 2 model years (1987–1988). Individual examples have sold from $43,200 to $332,000, with 7 sold in the past 12 months.
Porsche 911 Turbo Cabriolet M505 Slant Nose Value by Year
What members see for the Porsche 911 Turbo Cabriolet M505 Slant Nose
The value above is the headline. Members get the full picture behind it.
- All 16 sold prices across every year, and where each one sold
- The live Value Signal, and how confident it is
- A 1–5 year value projection
- A Buy / Hold / Sell call
- An alert the moment one lists or sells
- The best and worst months to buy and sell
- An estimated market-bottom date
- Whether a for-sale ask is fair, the moment one lists
- Deal Radar: underpriced listings across the market
Not ready? A free account shows the current value and recent sale dates.
Recent Porsche 911 Turbo Cabriolet M505 Slant Nose Auction Results
| Sold | Year | Price | Mileage |
|---|---|---|---|
| Sep 1, 2026 | 1988 | $275,000 | 40,000 mi |
| Aug 15, 2026 | 1987 | $126,500 | 68,580 mi |
| Jun 18, 2026 | 1987 | $260,000 | — |
| May 28, 2026 | 1987 | $264,000 | 68,000 mi |
| Feb 13, 2026 | 1987 | $301,000 | 27,000 mi |
| Dec 16, 2025 | 1988 | $235,000 | 48,000 mi |
| Dec 5, 2025 | 1988 | $257,794 | 39,000 mi |
| Aug 15, 2025 | 1988 | $184,800 | 38,600 mi |
| Apr 15, 2025 | 1988 | $176,000 | 42,000 mi |
| Dec 18, 2024 | 1987 | $176,500 | 35,000 mi |
| Aug 7, 2024 | 1988 | $188,000 | 44,000 mi |
| Dec 21, 2023 | 1988 | $270,000 | 8,000 mi |
Porsche 911 Turbo Cabriolet M505 Slant Nose: Frequently Asked Questions
How much is a Porsche 911 Turbo Cabriolet M505 Slant Nose worth?
Porsche 911 Turbo Cabriolet M505 Slant Nose market values range from $208,000 to $268,427 depending on the model year, mileage, and condition. Recent auction sales span $43,200 to $332,000. See the year-by-year breakdown below.
Which Porsche 911 Turbo Cabriolet M505 Slant Nose year is best?
DriveIndex tracks the market value of every Porsche 911 Turbo Cabriolet M505 Slant Nose year (1987–1988), listed year by year on this page. Whether each year is appreciating, stable or depreciating is DriveIndex's Value Signal, a Pro feature, which also includes a 1–5 year projection.
How many Porsche 911 Turbo Cabriolet M505 Slant Nose sell per year?
7 Porsche 911 Turbo Cabriolet M505 Slant Nose have sold at auction in the past 12 months across all years; DriveIndex has tracked 16 sales in total.
Where can I buy a Porsche 911 Turbo Cabriolet M505 Slant Nose?
DriveIndex tracks for-sale listings and auction results for the Porsche 911 Turbo Cabriolet M505 Slant Nose from the top auction houses and marketplaces.