Germany vs Germany — 2007 vs 1996
| B3 Biturbo Coupe | SL 73 AMG R129 | |
|---|---|---|
| Horsepower | 360 hp | 525 hp |
| Torque | 369 lb-ft | 553 lb-ft |
| Engine Size | 2,979 cc | 7,291 cc |
| 0-60 mph | 4.7 sec | 4.4 sec |
| Top Speed | 183 mph | 186 mph |
| ¼ Mile | 12.9 sec | 12.8 sec |
| Weight | 3,461 lbs | 4,387 lbs |
| Wheelbase | 2,760 mm | 2,515 mm |
| Length | 4,580 mm | 4,500 mm |
| Units Produced | 800 | 85 |
| Original MSRP | $72,000 | — |
| Value (Excellent) | $75,000 | $650,000 |
| Collectibility | 7/10 | 9/10 |
| Rarity | 8/10 | 10/10 |
The 1996 Mercedes-Benz SL 73 AMG R129 emerges ahead in most objective measures, offering more power, quicker acceleration, higher top speed. The 2007 Alpina B3 Biturbo Coupe counters with lighter weight, better value, but the numbers favor its rival. Still, both are remarkable machines, and the final choice often comes down to which driving experience speaks to you.
The 2007 Alpina B3 Biturbo Coupe and 1996 Mercedes-Benz SL 73 AMG R129 stand as two of the most notable Grand Tourer cars from Modern classic. Both emerged during a period of intense competition, and choosing between them remains a passionate debate among collectors. The 1996 Mercedes-Benz SL 73 AMG R129 holds a clear advantage in raw power with 525 hp compared to 360 hp, a 165-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Alpina B3 uses a Inline-6 Twin-Turbocharged displacing 2,979 cc, while the Mercedes-Benz SL 73 AMG relies on a V12 SOHC 24V with 7,291 cc. In the sprint to 60 mph, the 1996 Mercedes-Benz SL 73 AMG R129 edges ahead at 4.4 seconds versus 4.7 seconds. The Alpina B3 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 Alpina B3's 800 examples. On the collector market, the 1996 Mercedes-Benz SL 73 AMG R129 commands a significant premium over the 2007 Alpina B3 Biturbo Coupe, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1996 Mercedes-Benz SL 73 AMG R129 rates higher among enthusiasts and auction houses.