USA vs UK — 1966 vs 1966
| GT40 Mk I | XJ13 Prototype | |
|---|---|---|
| Horsepower | 380 hp | 502 hp |
| Torque | 332 lb-ft | 360 lb-ft |
| Engine Size | 4,736 cc | 4,994 cc |
| 0-60 mph | 5.3 sec | 3.4 sec |
| Top Speed | 200 mph | 174 mph |
| ¼ Mile | 12.5 sec | 11.2 sec |
| Weight | — | 2,000 lbs |
| Wheelbase | 2,413 mm | 2,438 mm |
| Length | 4,267 mm | 4,300 mm |
| Units Produced | 105 | 1 |
| Value (Excellent) | $12,000,000 | — |
| Collectibility | 5/10 | 10/10 |
| Rarity | 10/10 | 10/10 |
The 1966 Jaguar XJ13 Prototype emerges ahead in most objective measures, offering more power, quicker acceleration, greater rarity. The 1966 Ford GT40 Mk I counters with higher top speed, 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.
When USA engineering meets UK craftsmanship, the result is one of the most compelling matchups in the classic car world. The 1966 Ford GT40 Mk I and 1966 Jaguar XJ13 Prototype embody their respective national automotive traditions while competing in the same arena. The 1966 Jaguar XJ13 Prototype holds a clear advantage in raw power with 502 hp compared to 380 hp, a 122-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Ford GT40 uses a V8 OHV 16V displacing 4,736 cc, while the Jaguar XJ13 relies on a V12 DOHC with 4,994 cc. In the sprint to 60 mph, the 1966 Jaguar XJ13 Prototype edges ahead at 3.4 seconds versus 5.3 seconds. Rarity plays a significant role here — with only 1 units built, the 1966 Jaguar XJ13 Prototype is considerably scarcer than the Ford GT40's 105 examples. From a collectibility standpoint, the 1966 Jaguar XJ13 Prototype rates higher among enthusiasts and auction houses.