UK vs USA — 1971 vs 1967
| Corniche Convertible | Crown Convertible | |
|---|---|---|
| Horsepower | 240 hp | 350 hp |
| Torque | 361 lb-ft | 470 lb-ft |
| Engine Size | 6,750 cc | 7,210 cc |
| 0-60 mph | 9.6 sec | 9.5 sec |
| Top Speed | 120 mph | 115 mph |
| ¼ Mile | 17.0 sec | 16.8 sec |
| Wheelbase | 3,060 mm | 3,264 mm |
| Length | 5,270 mm | 5,740 mm |
| Units Produced | 4,200 | 577 |
| Value (Excellent) | $200,000 | $145,000 |
| Collectibility | 5/10 | 5/10 |
| Rarity | 7/10 | 9/10 |
The 1967 Imperial Crown Convertible emerges ahead in most objective measures, offering more power, quicker acceleration, greater rarity. The 1971 Rolls-Royce Corniche Convertible 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 UK engineering meets USA craftsmanship, the result is one of the most compelling matchups in the classic car world. The 1971 Rolls-Royce Corniche Convertible and 1967 Imperial Crown Convertible embody their respective national automotive traditions while competing in the same arena. The 1967 Imperial Crown Convertible holds a clear advantage in raw power with 350 hp compared to 240 hp, a 110-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Rolls-Royce Corniche uses a V8 OHV 16V displacing 6,750 cc, while the Imperial Crown relies on a V8 OHV with 7,210 cc. In the sprint to 60 mph, the 1967 Imperial Crown Convertible edges ahead at 9.5 seconds versus 9.6 seconds. Rarity plays a significant role here — with only 577 units built, the 1967 Imperial Crown Convertible is considerably scarcer than the Rolls-Royce Corniche's 4,200 examples.