Italy vs Italy — 1929 vs 1932
| 6C 1750 Gran Sport Zagato Spider | P3 Tipo B Grand Prix | |
|---|---|---|
| Horsepower | 85 hp | 215 hp |
| Engine Size | 1,752 cc | 2,654 cc |
| Top Speed | 96 mph | 162 mph |
| Weight | 1,852 lbs | 1,543 lbs |
| Wheelbase | 2,745 mm | 2,650 mm |
| Length | 3,900 mm | 3,950 mm |
| Units Produced | 218 | 6 |
| Value (Excellent) | $8,000,000 | $40,000,000 |
| Collectibility | 10/10 | 10/10 |
| Rarity | 10/10 | 10/10 |
Numbers favor the 1932 Alfa Romeo P3 Tipo B Grand Prix with more power, higher top speed, lighter weight. The 1929 Alfa Romeo 6C 1750 Gran Sport Zagato Spider offers better value, and has its own devoted following. For those who let their heart decide, either car delivers a rewarding ownership experience.
Alfa Romeo has long offered a diverse lineup, and comparing the 1929 Alfa Romeo 6C 1750 Gran Sport Zagato Spider with the 1932 Alfa Romeo P3 Tipo B Grand Prix highlights the breadth of the marque's engineering philosophy. The 1932 Alfa Romeo P3 Tipo B Grand Prix holds a clear advantage in raw power with 215 hp compared to 85 hp, a 130-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Alfa Romeo 6C 1750 Gran Sport uses a Inline-6 DOHC Supercharged displacing 1,752 cc, while the Alfa Romeo P3 relies on a Straight-8 DOHC Supercharged with 2,654 cc. The 1932 Alfa Romeo P3 Tipo B Grand Prix claims a higher top speed at 162 mph compared to 96 mph. The Alfa Romeo P3 carries a weight advantage, tipping the scales 309 lbs lighter. Rarity plays a significant role here — with only 6 units built, the 1932 Alfa Romeo P3 Tipo B Grand Prix is considerably scarcer than the Alfa Romeo 6C 1750 Gran Sport's 218 examples. On the collector market, the 1932 Alfa Romeo P3 Tipo B Grand Prix commands a significant premium over the 1929 Alfa Romeo 6C 1750 Gran Sport Zagato Spider, reflecting differences in prestige and rarity.