France vs Netherlands — 1970 vs 1967
| GS Birotor | 55 Marathon | |
|---|---|---|
| Horsepower | 107 hp | 50 hp |
| Torque | 100 lb-ft | 60 lb-ft |
| Engine Size | 1,990 cc | 1,108 cc |
| 0-60 mph | 13.5 sec | 19.0 sec |
| Top Speed | 109 mph | 84 mph |
| ¼ Mile | 19.2 sec | — |
| Weight | 2,425 lbs | 1,631 lbs |
| Wheelbase | 2,550 mm | 2,120 mm |
| Length | 4,120 mm | 3,860 mm |
| Units Produced | 847 | — |
| Value (Excellent) | $120,000 | $20,000 |
| Collectibility | 9/10 | 6/10 |
| Rarity | 10/10 | 7/10 |
The 1970 Citroen GS Birotor holds an edge across most measurable criteria, offering more power, quicker acceleration, higher top speed. That said, the 1967 DAF 55 Marathon brings lighter weight, better value and remains a compelling choice for enthusiasts who value DAF heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
Putting the 1970 Citroen GS Birotor against the 1967 DAF 55 Marathon is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — France versus Netherlands. The 1970 Citroen GS Birotor holds a clear advantage in raw power with 107 hp compared to 50 hp, a 57-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Citroen GS uses a Twin-rotor Wankel displacing 1,990 cc, while the DAF 55 relies on a Flat-twin OHV with 1,108 cc. In the sprint to 60 mph, the 1970 Citroen GS Birotor edges ahead at 13.5 seconds versus 19.0 seconds. The DAF 55 carries a weight advantage, tipping the scales 794 lbs lighter. On the collector market, the 1970 Citroen GS Birotor commands a significant premium over the 1967 DAF 55 Marathon, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1970 Citroen GS Birotor rates higher among enthusiasts and auction houses.