UK vs France — 1906 vs 1934
| Silver Ghost 40/50 HP Tourer | C25 Aerodyne | |
|---|---|---|
| Horsepower | 48 hp | 100 hp |
| Engine Size | 7,428 cc | 3,000 cc |
| Top Speed | 65 mph | 87 mph |
| Weight | 3,968 lbs | 3,527 lbs |
| Wheelbase | 3,632 mm | 3,150 mm |
| Length | 4,876 mm | 4,900 mm |
| Units Produced | 7,874 | — |
| Value (Excellent) | $2,000,000 | $2,500,000 |
| Collectibility | 10/10 | 10/10 |
| Rarity | 8/10 | 10/10 |
The 1934 Voisin C25 Aerodyne emerges ahead in most objective measures, offering more power, higher top speed, lighter weight. The 1906 Rolls-Royce Silver Ghost 40/50 HP Tourer counters with better value, 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.
Putting the 1906 Rolls-Royce Silver Ghost 40/50 HP Tourer against the 1934 Voisin C25 Aerodyne is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — UK versus France. The 1934 Voisin C25 Aerodyne holds a clear advantage in raw power with 100 hp compared to 48 hp, a 52-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Rolls-Royce Silver Ghost uses a Inline-6 Side-Valve displacing 7,428 cc, while the Voisin C25 relies on a Inline-6 Sleeve-valve with 3,000 cc. The 1934 Voisin C25 Aerodyne claims a higher top speed at 87 mph compared to 65 mph. The Voisin C25 carries a weight advantage, tipping the scales 441 lbs lighter. On the collector market, the 1934 Voisin C25 Aerodyne commands a significant premium over the 1906 Rolls-Royce Silver Ghost 40/50 HP Tourer, reflecting differences in prestige and rarity.