Z3 vs R129 SL vs TT 8N: 90s Roadster Showdown
Three Roadsters, Three Philosophies
The late 1990s were a golden era for open-top sports cars. Three German manufacturers each brought their own vision of a roadster to market: BMW with the iconic Z3, Mercedes-Benz with the luxurious R129 SL, and Audi with the avant-garde TT 8N. All three became instant classics — but on the used car market today, their prices tell very different stories.
We analyzed our latest market data from March 28, 2026 to show you which roadster is the best pick for different types of buyers.
The Big Price Comparison
Current Market Data
| Feature | BMW Z3 | Mercedes R129 SL | Audi TT 8N |
|---|---|---|---|
| Average Price | €17,247 | €26,153 | €6,605 |
| Minimum Price | €3,800 | €6,500 | €1,800 |
| Maximum Price | €46,980 | €55,090 | €19,990 |
| Avg. Mileage | 127,966 km | 130,904 km | 200,116 km |
| Listings | 90 | 68 | 33 |
| Production Years | 1995—2002 | 1989—2001 | 1998—2006 |
The Mercedes R129 SL sits significantly above both rivals in pricing. At an average of €26,153, it costs roughly four times the Audi TT 8N and over 50% more than the BMW Z3. But the differences are well justified.
Key Differences
Mercedes R129 SL — The Grand Tourer
The R129 is less a traditional roadster and more a grand tourer with a removable hardtop. It offers inline-six and V8 engines, sophisticated engineering, and Mercedes-level comfort. Built from 1989 to 2001, it is the oldest model in this comparison, which partly explains its higher average price: many examples have already achieved classic car status.
BMW Z3 — The Driving Purist
The Z3 shot to fame with its appearance in the James Bond film “GoldenEye.” With four and six-cylinder engines, it delivers direct driving feedback and classic roadster proportions. With 90 active listings, it has the strongest market presence of the three, making it easier for buyers to find the right example.
Audi TT 8N — The Design Icon
The TT 8N revolutionized sports car design with its Bauhaus-inspired styling. At an average of just €6,605, it is by far the cheapest entry into a German premium roadster. However, the high average mileage of 200,116 km indicates that many examples have been driven hard.
Which Roadster for Which Purpose?
For investment and classic car appreciation: The Mercedes R129 SL is the safest bet. As a long-established classic with a solid price floor, it offers the strongest potential for value retention. Entry from €6,500.
For driving enjoyment and versatility: The BMW Z3 hits the sweet spot between price and experience. With 90 listings on the market, finding the right example is straightforward, and the price range from €3,800 to €46,980 covers every budget.
For budget-minded sports car enthusiasts: The Audi TT 8N is the clear price winner. Starting from just €1,800, you get a characterful sports car with available Quattro all-wheel drive — no other German premium roadster matches this entry price.
Verdict
Each of these three roadsters has its own distinct character and appeals to a different kind of buyer. The R129 SL is for those who appreciate luxury and established classic status. The Z3 offers the best overall package of driving fun, availability, and value. And the TT 8N is the perfect choice for newcomers who want a bold design statement at a modest price.
All three share one important trait: they are among the last analog sports cars from their respective brands, and as such, their significance will only grow. Buying now means you can still take advantage of relatively moderate prices before the next wave of appreciation.