Germany vs Germany — 1990 vs 1989
| SL 500SL (R129) | 8 Series 850CSi | |
|---|---|---|
| Horsepower | 322 hp | 380 hp |
| Torque | 354 lb-ft | 406 lb-ft |
| Engine Size | 4,973 cc | 5,576 cc |
| 0-60 mph | 6.2 sec | 5.6 sec |
| Top Speed | 155 mph | 171 mph |
| ¼ Mile | 14.5 sec | 13.6 sec |
| Weight | 3,990 lbs | — |
| Wheelbase | 2,515 mm | 2,684 mm |
| Length | 4,470 mm | 4,780 mm |
| Units Produced | 85,000 | 1,510 |
| Original MSRP | $82,500 | — |
| Value (Excellent) | $50,000 | $140,000 |
| Collectibility | 6/10 | 5/10 |
| Rarity | 3/10 | 7/10 |
The 1989 BMW 8 Series 850CSi emerges ahead in most objective measures, offering more power, quicker acceleration, higher top speed. The 1990 Mercedes-Benz SL 500SL (R129) counters with stronger collectibility, 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 1990 Mercedes-Benz SL 500SL (R129) and 1989 BMW 8 Series 850CSi 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 1989 BMW 8 Series 850CSi holds a clear advantage in raw power with 380 hp compared to 322 hp, a 58-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Mercedes-Benz SL uses a V8 DOHC 32V (M119) displacing 4,973 cc, while the BMW 8 Series relies on a V12 SOHC 24V with 5,576 cc. In the sprint to 60 mph, the 1989 BMW 8 Series 850CSi edges ahead at 5.6 seconds versus 6.2 seconds. Rarity plays a significant role here — with only 1,510 units built, the 1989 BMW 8 Series 850CSi is considerably scarcer than the Mercedes-Benz SL's 85,000 examples. On the collector market, the 1989 BMW 8 Series 850CSi commands a significant premium over the 1990 Mercedes-Benz SL 500SL (R129), reflecting differences in prestige and rarity.