UK vs Italy — 1921 vs 1922
| 3 Litre | RL Super Sport | |
|---|---|---|
| Horsepower | 80 hp | 83 hp |
| Engine Size | 2,996 cc | 2,994 cc |
| Top Speed | 80 mph | 81 mph |
| Weight | 3,024 lbs | 2,646 lbs |
| Wheelbase | 2,985 mm | 3,050 mm |
| Length | 4,267 mm | — |
| Units Produced | 1,622 | 392 |
| Value (Excellent) | $1,500,000 | $2,000,000 |
| Collectibility | 10/10 | 9/10 |
| Rarity | 8/10 | 9/10 |
Two outstanding machines, each with compelling strengths. The 1921 Bentley 3 Litre excels in stronger collectibility, better value, while the 1922 Alfa Romeo RL Super Sport stands out for higher top speed, lighter weight, greater rarity. The best advice? Drive both if you can, then follow your instincts.
Putting the 1921 Bentley 3 Litre against the 1922 Alfa Romeo RL Super Sport is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — UK versus Italy. On paper, the two are remarkably close in power output, with the 1921 Bentley 3 Litre producing 80 hp and the 1922 Alfa Romeo RL Super Sport delivering 83 hp. Under the hood, the contrast is notable: the Bentley 3 Litre uses a Inline-4 SOHC displacing 2,996 cc, while the Alfa Romeo RL relies on a Inline-6 OHV with 2,994 cc. The 1922 Alfa Romeo RL Super Sport claims a higher top speed at 81 mph compared to 80 mph. The Alfa Romeo RL carries a weight advantage, tipping the scales 378 lbs lighter. Rarity plays a significant role here — with only 392 units built, the 1922 Alfa Romeo RL Super Sport is considerably scarcer than the Bentley 3 Litre's 1,622 examples.