Japan vs West Germany — 1975 vs 1978
| Cosmo AP Limited | Monza 3.0E GSE | |
|---|---|---|
| Horsepower | 135 hp | 180 hp |
| Torque | 134 lb-ft | 181 lb-ft |
| Engine Size | 1,308 cc | 2,969 cc |
| 0-60 mph | 9.0 sec | 8.0 sec |
| Top Speed | 121 mph | 137 mph |
| ¼ Mile | 16.5 sec | 16.0 sec |
| Weight | 2,469 lbs | 2,932 lbs |
| Wheelbase | 2,510 mm | 2,668 mm |
| Length | 4,545 mm | 4,692 mm |
| Units Produced | — | 43,728 |
| Value (Excellent) | $50,000 | $30,000 |
| Collectibility | 7/10 | 5/10 |
| Rarity | 8/10 | 7/10 |
Numbers favor the 1978 Opel Monza 3.0E GSE with more power, quicker acceleration, higher top speed. The 1975 Mazda Cosmo AP Limited offers lighter weight, stronger collectibility, and has its own devoted following. For those who let their heart decide, either car delivers a rewarding ownership experience.
The rivalry between Japan and West Germany automotive industries has produced legendary matchups, and the 1975 Mazda Cosmo AP Limited versus 1978 Opel Monza 3.0E GSE is among the most fascinating. These two cars represent the best of their national engineering schools. The 1978 Opel Monza 3.0E GSE holds a clear advantage in raw power with 180 hp compared to 135 hp, a 45-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Mazda Cosmo AP uses a Twin-rotor Wankel (13B) displacing 1,308 cc, while the Opel Monza relies on a Inline-6 OHC with 2,969 cc. In the sprint to 60 mph, the 1978 Opel Monza 3.0E GSE edges ahead at 8.0 seconds versus 9.0 seconds. The Mazda Cosmo AP carries a weight advantage, tipping the scales 463 lbs lighter. From a collectibility standpoint, the 1975 Mazda Cosmo AP Limited rates higher among enthusiasts and auction houses.