Germany vs Japan — 1977 vs 1975
| 928 GTS | Cosmo AP Limited | |
|---|---|---|
| Horsepower | 350 hp | 135 hp |
| Torque | 354 lb-ft | 134 lb-ft |
| Engine Size | 5,397 cc | 1,308 cc |
| 0-60 mph | 5.2 sec | 9.0 sec |
| Top Speed | 171 mph | 121 mph |
| ¼ Mile | 13.6 sec | 16.5 sec |
| Weight | — | 2,469 lbs |
| Wheelbase | 2,500 mm | 2,510 mm |
| Length | 4,520 mm | 4,545 mm |
| Units Produced | 2,904 | — |
| Value (Excellent) | $130,000 | $50,000 |
| Collectibility | 5/10 | 7/10 |
| Rarity | 6/10 | 8/10 |
Two outstanding machines, each with compelling strengths. The 1977 Porsche 928 GTS excels in more power, quicker acceleration, higher top speed, while the 1975 Mazda Cosmo AP Limited stands out for stronger collectibility, better value. The best advice? Drive both if you can, then follow your instincts.
Putting the 1977 Porsche 928 GTS against the 1975 Mazda Cosmo AP Limited is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — Germany versus Japan. The 1977 Porsche 928 GTS holds a clear advantage in raw power with 350 hp compared to 135 hp, a 215-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Porsche 928 uses a V8 DOHC 32V displacing 5,397 cc, while the Mazda Cosmo AP relies on a Twin-rotor Wankel (13B) with 1,308 cc. In the sprint to 60 mph, the 1977 Porsche 928 GTS edges ahead at 5.2 seconds versus 9.0 seconds. On the collector market, the 1977 Porsche 928 GTS commands a significant premium over the 1975 Mazda Cosmo AP Limited, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1975 Mazda Cosmo AP Limited rates higher among enthusiasts and auction houses.