France vs West Germany — 1969 vs 1971
| SM Injection | 350 SL / 450 SL R107 450 SL | |
|---|---|---|
| Horsepower | 180 hp | 225 hp |
| Torque | 171 lb-ft | 278 lb-ft |
| Engine Size | 2,670 cc | 4,520 cc |
| 0-60 mph | 8.5 sec | 8.8 sec |
| Top Speed | 142 mph | 130 mph |
| ¼ Mile | 16.5 sec | 16.5 sec |
| Weight | — | 3,505 lbs |
| Wheelbase | 2,950 mm | 2,460 mm |
| Length | 4,890 mm | 4,390 mm |
| Units Produced | 12,920 | 237,287 |
| Original MSRP | — | $17,660 |
| Value (Excellent) | $130,000 | $80,000 |
| Collectibility | 5/10 | 7/10 |
| Rarity | 7/10 | 3/10 |
Two outstanding machines, each with compelling strengths. The 1969 Citroën SM Injection excels in quicker acceleration, higher top speed, greater rarity, while the 1971 Mercedes-Benz 350 SL / 450 SL R107 450 SL stands out for more power, stronger collectibility, better value. The best advice? Drive both if you can, then follow your instincts.
Putting the 1969 Citroën SM Injection 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 — France 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 180 hp, a 45-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Citroën SM uses a V6 DOHC 24V displacing 2,670 cc, while the Mercedes-Benz 350 SL / 450 SL relies on a V8 SOHC with 4,520 cc. In the sprint to 60 mph, the 1969 Citroën SM Injection edges ahead at 8.5 seconds versus 8.8 seconds. Rarity plays a significant role here — with only 12,920 units built, the 1969 Citroën SM Injection is considerably scarcer than the Mercedes-Benz 350 SL / 450 SL's 237,287 examples. From a collectibility standpoint, the 1971 Mercedes-Benz 350 SL / 450 SL R107 450 SL rates higher among enthusiasts and auction houses.