Germany vs West Germany — 1978 vs 1984
| M1 Procar | Imperator 108i | |
|---|---|---|
| Horsepower | 277 hp | 326 hp |
| Torque | 243 lb-ft | 339 lb-ft |
| Engine Size | 3,453 cc | 4,973 cc |
| 0-60 mph | 5.6 sec | 5.0 sec |
| Top Speed | 165 mph | 174 mph |
| ¼ Mile | 13.8 sec | 13.0 sec |
| Weight | — | 2,976 lbs |
| Wheelbase | 2,560 mm | 2,500 mm |
| Length | 4,360 mm | 4,340 mm |
| Units Produced | 456 | 17 |
| Original MSRP | — | $180,000 |
| Value (Excellent) | $900,000 | $1,500,000 |
| Collectibility | 5/10 | 10/10 |
| Rarity | 9/10 | 10/10 |
The 1984 Isdera Imperator 108i emerges ahead in most objective measures, offering more power, quicker acceleration, higher top speed. The 1978 BMW M1 Procar counters with its unique character, 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 1978 BMW M1 Procar against the 1984 Isdera Imperator 108i is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — Germany versus West Germany. The 1984 Isdera Imperator 108i holds a clear advantage in raw power with 326 hp compared to 277 hp, a 49-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the BMW M1 uses a Inline-6 DOHC 24V displacing 3,453 cc, while the Isdera Imperator 108i relies on a V8 DOHC 32V with 4,973 cc. In the sprint to 60 mph, the 1984 Isdera Imperator 108i edges ahead at 5.0 seconds versus 5.6 seconds. Rarity plays a significant role here — with only 17 units built, the 1984 Isdera Imperator 108i is considerably scarcer than the BMW M1's 456 examples. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference. From a collectibility standpoint, the 1984 Isdera Imperator 108i rates higher among enthusiasts and auction houses.