UK vs UK — 1966 vs 1997
| XJ13 Prototype | XJR X308 Supercharged V8 | |
|---|---|---|
| Horsepower | 502 hp | 370 hp |
| Torque | 360 lb-ft | 387 lb-ft |
| Engine Size | 4,994 cc | 3,996 cc |
| 0-60 mph | 3.4 sec | 5.3 sec |
| Top Speed | 174 mph | 155 mph |
| ¼ Mile | 11.2 sec | 13.7 sec |
| Weight | 2,000 lbs | 3,814 lbs |
| Wheelbase | 2,438 mm | 2,870 mm |
| Length | 4,300 mm | 5,023 mm |
| Units Produced | 1 | 12,500 |
| Original MSRP | — | $66,500 |
| Value (Excellent) | — | $35,000 |
| Collectibility | 10/10 | 6/10 |
| Rarity | 10/10 | 5/10 |
The 1966 Jaguar XJ13 Prototype holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1997 Jaguar XJR X308 Supercharged V8 brings its own distinct appeal and remains a compelling choice for enthusiasts who value Jaguar heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
The 1966 Jaguar XJ13 Prototype and 1997 Jaguar XJR X308 Supercharged V8 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 370 hp, a 132-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Jaguar XJ13 uses a V12 DOHC displacing 4,994 cc, while the Jaguar XJR relies on a V8 DOHC Supercharged with 3,996 cc. In the sprint to 60 mph, the 1966 Jaguar XJ13 Prototype edges ahead at 3.4 seconds versus 5.3 seconds. The Jaguar XJ13 carries a weight advantage, tipping the scales 1814 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's 12,500 examples. From a collectibility standpoint, the 1966 Jaguar XJ13 Prototype rates higher among enthusiasts and auction houses.