Germany vs Germany — 1996 vs 1986
| SL 73 AMG R129 | M635CSi E24 | |
|---|---|---|
| Horsepower | 525 hp | 286 hp |
| Torque | 553 lb-ft | 251 lb-ft |
| Engine Size | 7,291 cc | 3,453 cc |
| 0-60 mph | 4.4 sec | 6.1 sec |
| Top Speed | 186 mph | 158 mph |
| ¼ Mile | 12.8 sec | 14.4 sec |
| Weight | 4,387 lbs | 3,461 lbs |
| Wheelbase | 2,515 mm | 2,625 mm |
| Length | 4,500 mm | 4,755 mm |
| Units Produced | 85 | 5,855 |
| Original MSRP | — | $54,500 |
| Value (Excellent) | $650,000 | $95,000 |
| Collectibility | 9/10 | 8/10 |
| Rarity | 10/10 | 7/10 |
The 1996 Mercedes-Benz SL 73 AMG R129 holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1986 BMW M635CSi E24 brings lighter weight, better value and remains a compelling choice for enthusiasts who value BMW heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
Among Grand Tourer enthusiasts, the matchup between the 1996 Mercedes-Benz SL 73 AMG R129 and 1986 BMW M635CSi E24 is one for the ages. These Modern classic machines competed directly for buyers' attention and continue to vie for collectors' affections today. The 1996 Mercedes-Benz SL 73 AMG R129 holds a clear advantage in raw power with 525 hp compared to 286 hp, a 239-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Mercedes-Benz SL 73 AMG uses a V12 SOHC 24V displacing 7,291 cc, while the BMW M635CSi relies on a Inline-6 DOHC with 3,453 cc. In the sprint to 60 mph, the 1996 Mercedes-Benz SL 73 AMG R129 edges ahead at 4.4 seconds versus 6.1 seconds. The BMW M635CSi carries a weight advantage, tipping the scales 926 lbs lighter. Rarity plays a significant role here — with only 85 units built, the 1996 Mercedes-Benz SL 73 AMG R129 is considerably scarcer than the BMW M635CSi's 5,855 examples. On the collector market, the 1996 Mercedes-Benz SL 73 AMG R129 commands a significant premium over the 1986 BMW M635CSi E24, reflecting differences in prestige and rarity.