West Germany vs Germany — 1989 vs 1991
| Z1 Drop-Down Doors | 911 964 Turbo | |
|---|---|---|
| Horsepower | 170 hp | 320 hp |
| Torque | 164 lb-ft | 332 lb-ft |
| Engine Size | 2,494 cc | 3,299 cc |
| 0-60 mph | 7.9 sec | 4.8 sec |
| Top Speed | 140 mph | 168 mph |
| ¼ Mile | 16.0 sec | 13.2 sec |
| Weight | 2,756 lbs | 3,241 lbs |
| Wheelbase | 2,450 mm | 2,272 mm |
| Length | 3,921 mm | 4,250 mm |
| Units Produced | 8,000 | 3,660 |
| Original MSRP | — | $99,000 |
| Value (Excellent) | $100,000 | $350,000 |
| Collectibility | 8/10 | 9/10 |
| Rarity | 7/10 | 8/10 |
The 1991 Porsche 911 964 Turbo emerges ahead in most objective measures, offering more power, quicker acceleration, higher top speed. The 1989 BMW Z1 Drop-Down Doors 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.
Putting the 1989 BMW Z1 Drop-Down Doors against the 1991 Porsche 911 964 Turbo is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — West Germany versus Germany. The 1991 Porsche 911 964 Turbo holds a clear advantage in raw power with 320 hp compared to 170 hp, a 150-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the BMW Z1 uses a Inline-6 SOHC displacing 2,494 cc, while the Porsche 911 relies on a Flat-6 Turbocharged with 3,299 cc. In the sprint to 60 mph, the 1991 Porsche 911 964 Turbo edges ahead at 4.8 seconds versus 7.9 seconds. The BMW Z1 carries a weight advantage, tipping the scales 485 lbs lighter. On the collector market, the 1991 Porsche 911 964 Turbo commands a significant premium over the 1989 BMW Z1 Drop-Down Doors, reflecting differences in prestige and rarity.