UK vs West Germany — 1962 vs 1971
| TD21 Series II | 350 SL / 450 SL R107 450 SL | |
|---|---|---|
| Horsepower | 130 hp | 225 hp |
| Torque | — | 278 lb-ft |
| Engine Size | 2,993 cc | 4,520 cc |
| 0-60 mph | — | 8.8 sec |
| Top Speed | — | 130 mph |
| ¼ Mile | — | 16.5 sec |
| Weight | — | 3,505 lbs |
| Wheelbase | 2,794 mm | 2,460 mm |
| Length | 4,750 mm | 4,390 mm |
| Units Produced | — | 237,287 |
| Original MSRP | — | $17,660 |
| Value (Excellent) | $80,000 | $80,000 |
| Collectibility | 5/10 | 7/10 |
| Rarity | 10/10 | 3/10 |
The 1971 Mercedes-Benz 350 SL / 450 SL R107 450 SL emerges ahead in most objective measures, offering more power, stronger collectibility, better value. The 1962 Alvis TD21 Series II counters with its unique character, 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 1962 Alvis TD21 Series II against the 1971 Mercedes-Benz 350 SL / 450 SL R107 450 SL is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — UK versus West Germany. The 1971 Mercedes-Benz 350 SL / 450 SL R107 450 SL holds a clear advantage in raw power with 225 hp compared to 130 hp, a 95-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Alvis TD21 uses a Inline-6 displacing 2,993 cc, while the Mercedes-Benz 350 SL / 450 SL relies on a V8 SOHC with 4,520 cc. From a collectibility standpoint, the 1971 Mercedes-Benz 350 SL / 450 SL R107 450 SL rates higher among enthusiasts and auction houses.