Germany vs Germany — 1956 vs 1977
| 507 | E21 323i Sedan | |
|---|---|---|
| Horsepower | 150 hp | 143 hp |
| Torque | 174 lb-ft | 149 lb-ft |
| Engine Size | 3,168 cc | 2,315 cc |
| 0-60 mph | 9.0 sec | 9.3 sec |
| Top Speed | 124 mph | 121 mph |
| ¼ Mile | 16.5 sec | 17.0 sec |
| Weight | 2,932 lbs | 2,469 lbs |
| Wheelbase | 2,480 mm | 2,563 mm |
| Length | 4,380 mm | 4,355 mm |
| Units Produced | 252 | 69,591 |
| Original MSRP | $9,000 | $11,945 |
| Value (Excellent) | $3,000,000 | $35,000 |
| Collectibility | 10/10 | 7/10 |
| Rarity | 10/10 | 6/10 |
On balance, the 1956 BMW 507 makes a stronger case on paper with quicker acceleration, higher top speed, greater rarity. However, the 1977 BMW E21 323i Sedan counters with lighter weight, better value, and its appeal extends beyond mere numbers. Choose the 1956 BMW 507 for outright capability, or the 1977 BMW E21 323i Sedan for a more distinctive ownership experience.
BMW has long offered a diverse lineup, and comparing the 1956 BMW 507 with the 1977 BMW E21 323i Sedan highlights the breadth of the marque's engineering philosophy. On paper, the two are remarkably close in power output, with the 1956 BMW 507 producing 150 hp and the 1977 BMW E21 323i Sedan delivering 143 hp. Under the hood, the contrast is notable: the BMW 507 uses a V8 OHV displacing 3,168 cc, while the BMW E21 323i relies on a Inline-6 SOHC with 2,315 cc. In the sprint to 60 mph, the 1956 BMW 507 edges ahead at 9.0 seconds versus 9.3 seconds. The BMW E21 323i carries a weight advantage, tipping the scales 463 lbs lighter. Rarity plays a significant role here — with only 252 units built, the 1956 BMW 507 is considerably scarcer than the BMW E21 323i's 69,591 examples. On the collector market, the 1956 BMW 507 commands a significant premium over the 1977 BMW E21 323i Sedan, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1956 BMW 507 rates higher among enthusiasts and auction houses.