Germany vs UK — 1955 vs 1957
| 550 Spyder | XKSS Production | |
|---|---|---|
| Horsepower | 110 hp | 250 hp |
| Torque | 90 lb-ft | 240 lb-ft |
| Engine Size | 1,498 cc | 3,442 cc |
| 0-60 mph | 8.5 sec | 5.2 sec |
| Top Speed | 137 mph | 140 mph |
| ¼ Mile | 16.0 sec | 13.8 sec |
| Weight | 1,300 lbs | 2,050 lbs |
| Wheelbase | 2,100 mm | 2,286 mm |
| Length | 3,700 mm | 3,988 mm |
| Units Produced | 90 | 16 |
| Original MSRP | $6,500 | $6,900 |
| Value (Excellent) | $7,000,000 | $18,000,000 |
| Collectibility | 10/10 | 10/10 |
| Rarity | 10/10 | 10/10 |
The 1957 Jaguar XKSS Production emerges ahead in most objective measures, offering more power, quicker acceleration, higher top speed. The 1955 Porsche 550 Spyder 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 1955 Porsche 550 Spyder against the 1957 Jaguar XKSS Production is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — Germany versus UK. The 1957 Jaguar XKSS Production holds a clear advantage in raw power with 250 hp compared to 110 hp, a 140-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Porsche 550 Spyder uses a Flat-4 DOHC 8V displacing 1,498 cc, while the Jaguar XKSS relies on a Inline-6 DOHC with 3,442 cc. In the sprint to 60 mph, the 1957 Jaguar XKSS Production edges ahead at 5.2 seconds versus 8.5 seconds. The Porsche 550 Spyder carries a weight advantage, tipping the scales 750 lbs lighter. Rarity plays a significant role here — with only 16 units built, the 1957 Jaguar XKSS Production is considerably scarcer than the Porsche 550 Spyder's 90 examples. On the collector market, the 1957 Jaguar XKSS Production commands a significant premium over the 1955 Porsche 550 Spyder, reflecting differences in prestige and rarity.