Germany vs Germany — 1977 vs 1978
| 928 GTS | 928 4.5 | |
|---|---|---|
| Horsepower | 350 hp | 240 hp |
| Torque | 354 lb-ft | 273 lb-ft |
| Engine Size | 5,397 cc | 4,474 cc |
| 0-60 mph | 5.2 sec | 6.8 sec |
| Top Speed | 171 mph | 143 mph |
| ¼ Mile | 13.6 sec | 15.1 sec |
| Weight | — | 3,197 lbs |
| Wheelbase | 2,500 mm | 2,500 mm |
| Length | 4,520 mm | 4,445 mm |
| Units Produced | 2,904 | 15,800 |
| Original MSRP | — | $28,500 |
| Value (Excellent) | $130,000 | $55,000 |
| Collectibility | 5/10 | 8/10 |
| Rarity | 6/10 | 6/10 |
The 1977 Porsche 928 GTS holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1978 Porsche 928 4.5 brings stronger collectibility, better value and remains a compelling choice for enthusiasts who value Porsche heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
Tracing the evolution of the Porsche 928 from 1977 to 1978 offers a compelling look at how automotive design and engineering progressed. These two variants showcase the changing face of Porsche. The 1977 Porsche 928 GTS holds a clear advantage in raw power with 350 hp compared to 240 hp, a 110-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 Porsche 928 relies on a V8 SOHC with 4,474 cc. In the sprint to 60 mph, the 1977 Porsche 928 GTS edges ahead at 5.2 seconds versus 6.8 seconds. Rarity plays a significant role here — with only 2,904 units built, the 1977 Porsche 928 GTS is considerably scarcer than the Porsche 928's 15,800 examples. From a collectibility standpoint, the 1978 Porsche 928 4.5 rates higher among enthusiasts and auction houses.