Germany vs West Germany — 1957 vs 1977
| 300 SL Roadster | 300D W123 | |
|---|---|---|
| Horsepower | 215 hp | 88 hp |
| Torque | 203 lb-ft | 127 lb-ft |
| Engine Size | 2,996 cc | 2,998 cc |
| 0-60 mph | 7.5 sec | 17.0 sec |
| Top Speed | 155 mph | 96 mph |
| ¼ Mile | 15.5 sec | 20.5 sec |
| Weight | 3,131 lbs | 3,241 lbs |
| Wheelbase | 2,400 mm | 2,795 mm |
| Length | 4,520 mm | 4,725 mm |
| Units Produced | 1,858 | 2,697,000 |
| Original MSRP | $11,000 | $20,300 |
| Value (Excellent) | $2,000,000 | $35,000 |
| Collectibility | 10/10 | 6/10 |
| Rarity | 9/10 | 2/10 |
On balance, the 1957 Mercedes-Benz 300 SL Roadster makes a stronger case on paper with more power, quicker acceleration, higher top speed. However, the 1977 Mercedes-Benz 300D W123 counters with better value, and its appeal extends beyond mere numbers. Choose the 1957 Mercedes-Benz 300 SL Roadster for outright capability, or the 1977 Mercedes-Benz 300D W123 for a more distinctive ownership experience.
Mercedes-Benz has long offered a diverse lineup, and comparing the 1957 Mercedes-Benz 300 SL Roadster with the 1977 Mercedes-Benz 300D W123 highlights the breadth of the marque's engineering philosophy. The 1957 Mercedes-Benz 300 SL Roadster holds a clear advantage in raw power with 215 hp compared to 88 hp, a 127-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Mercedes-Benz 300 SL Roadster uses a Inline-6 SOHC displacing 2,996 cc, while the Mercedes-Benz 300D relies on a Inline-5 Diesel OHC with 2,998 cc. In the sprint to 60 mph, the 1957 Mercedes-Benz 300 SL Roadster edges ahead at 7.5 seconds versus 17.0 seconds. Rarity plays a significant role here — with only 1,858 units built, the 1957 Mercedes-Benz 300 SL Roadster is considerably scarcer than the Mercedes-Benz 300D's 2,697,000 examples. On the collector market, the 1957 Mercedes-Benz 300 SL Roadster commands a significant premium over the 1977 Mercedes-Benz 300D W123, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1957 Mercedes-Benz 300 SL Roadster rates higher among enthusiasts and auction houses.