Germany vs USA — 1990 vs 1987
| SL 500SL (R129) | Allante Convertible | |
|---|---|---|
| Horsepower | 322 hp | 295 hp |
| Torque | 354 lb-ft | 290 lb-ft |
| Engine Size | 4,973 cc | 4,565 cc |
| 0-60 mph | 6.2 sec | 6.4 sec |
| Top Speed | 155 mph | 150 mph |
| ¼ Mile | 14.5 sec | 14.9 sec |
| Weight | 3,990 lbs | 3,650 lbs |
| Wheelbase | 2,515 mm | 2,525 mm |
| Length | 4,470 mm | 4,531 mm |
| Units Produced | 85,000 | 21,430 |
| Original MSRP | $82,500 | $57,183 |
| Value (Excellent) | $50,000 | $38,000 |
| Collectibility | 6/10 | 6/10 |
| Rarity | 3/10 | 6/10 |
Two outstanding machines, each with compelling strengths. The 1990 Mercedes-Benz SL 500SL (R129) excels in quicker acceleration, higher top speed, while the 1987 Cadillac Allante Convertible stands out for lighter weight, greater rarity. The best advice? Drive both if you can, then follow your instincts.
Putting the 1990 Mercedes-Benz SL 500SL (R129) against the 1987 Cadillac Allante Convertible is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — Germany versus USA. The 1990 Mercedes-Benz SL 500SL (R129) holds a clear advantage in raw power with 322 hp compared to 295 hp, a 27-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 Cadillac Allante relies on a V8 OHV with 4,565 cc. In the sprint to 60 mph, the 1990 Mercedes-Benz SL 500SL (R129) edges ahead at 6.2 seconds versus 6.4 seconds. The Cadillac Allante carries a weight advantage, tipping the scales 340 lbs lighter. Rarity plays a significant role here — with only 21,430 units built, the 1987 Cadillac Allante Convertible is considerably scarcer than the Mercedes-Benz SL's 85,000 examples. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.