UK vs UK — 1990 vs 1966
| XJR-15 | XJ13 Prototype | |
|---|---|---|
| Horsepower | 450 hp | 502 hp |
| Torque | 410 lb-ft | 360 lb-ft |
| Engine Size | 5,993 cc | 4,994 cc |
| 0-60 mph | 3.9 sec | 3.4 sec |
| Top Speed | 191 mph | 174 mph |
| ¼ Mile | 12.1 sec | 11.2 sec |
| Weight | 2,315 lbs | 2,000 lbs |
| Wheelbase | 2,590 mm | 2,438 mm |
| Length | 4,420 mm | 4,300 mm |
| Units Produced | 53 | 1 |
| Original MSRP | $960,000 | — |
| Value (Excellent) | $3,000,000 | — |
| Collectibility | 9/10 | 10/10 |
| Rarity | 9/10 | 10/10 |
The 1966 Jaguar XJ13 Prototype emerges ahead in most objective measures, offering more power, quicker acceleration, lighter weight. The 1990 Jaguar XJR-15 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.
The 1990 Jaguar XJR-15 and 1966 Jaguar XJ13 Prototype share a manufacturer in Jaguar, but that's where the similarities get interesting. These two models reveal the versatility and ambition of the Jaguar brand. The 1966 Jaguar XJ13 Prototype holds a clear advantage in raw power with 502 hp compared to 450 hp, a 52-horsepower difference that shapes the driving experience. In the sprint to 60 mph, the 1966 Jaguar XJ13 Prototype edges ahead at 3.4 seconds versus 3.9 seconds. The Jaguar XJ13 carries a weight advantage, tipping the scales 315 lbs lighter. Rarity plays a significant role here — with only 1 units built, the 1966 Jaguar XJ13 Prototype is considerably scarcer than the Jaguar XJR-15's 53 examples.