UK vs UK — 1968 vs 1968
| XJ6 Series I 4.2 | P5B 3.5 Litre Coupe | |
|---|---|---|
| Horsepower | 245 hp | 160 hp |
| Torque | 283 lb-ft | 210 lb-ft |
| Engine Size | 4,235 cc | 3,528 cc |
| 0-60 mph | 8.8 sec | 11.7 sec |
| Top Speed | 122 mph | 110 mph |
| ¼ Mile | 16.5 sec | — |
| Weight | 3,722 lbs | 3,858 lbs |
| Wheelbase | 2,762 mm | 2,819 mm |
| Length | 4,972 mm | 4,775 mm |
| Units Produced | 82,127 | 9,099 |
| Original MSRP | $6,560 | — |
| Value (Excellent) | $75,000 | $35,000 |
| Collectibility | 7/10 | 7/10 |
| Rarity | 5/10 | 6/10 |
The 1968 Jaguar XJ6 Series I 4.2 holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1968 Rover P5B 3.5 Litre Coupe brings greater rarity and remains a compelling choice for enthusiasts who value Rover heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
The 1968 Jaguar XJ6 Series I 4.2 and 1968 Rover P5B 3.5 Litre Coupe stand as two of the most notable Luxury Sedan cars from Muscle era. Both emerged during a period of intense competition, and choosing between them remains a passionate debate among collectors. The 1968 Jaguar XJ6 Series I 4.2 holds a clear advantage in raw power with 245 hp compared to 160 hp, a 85-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Jaguar XJ6 uses a Inline-6 DOHC displacing 4,235 cc, while the Rover P5B relies on a V8 OHV with 3,528 cc. In the sprint to 60 mph, the 1968 Jaguar XJ6 Series I 4.2 edges ahead at 8.8 seconds versus 11.7 seconds. Rarity plays a significant role here — with only 9,099 units built, the 1968 Rover P5B 3.5 Litre Coupe is considerably scarcer than the Jaguar XJ6's 82,127 examples.