France vs France — 1970 vs 2005
| GS Birotor | C6 V6 HDi Exclusive | |
|---|---|---|
| Horsepower | 107 hp | 208 hp |
| Torque | 100 lb-ft | 325 lb-ft |
| Engine Size | 1,990 cc | 2,720 cc |
| 0-60 mph | 13.5 sec | 8.5 sec |
| Top Speed | 109 mph | 143 mph |
| ¼ Mile | 19.2 sec | 16.5 sec |
| Weight | 2,425 lbs | 3,869 lbs |
| Wheelbase | 2,550 mm | 2,900 mm |
| Length | 4,120 mm | 4,908 mm |
| Units Produced | 847 | 23,399 |
| Value (Excellent) | $120,000 | $25,000 |
| Collectibility | 9/10 | 5/10 |
| Rarity | 10/10 | 7/10 |
It's a closely fought contest. The 1970 Citroen GS Birotor brings lighter weight, greater rarity, stronger collectibility to the table, and the 2005 Citroen C6 V6 HDi Exclusive answers with more power, quicker acceleration, higher top speed. Both are excellent machines that reward their owners in different ways — there's no wrong answer here.
Citroen has long offered a diverse lineup, and comparing the 1970 Citroen GS Birotor with the 2005 Citroen C6 V6 HDi Exclusive highlights the breadth of the marque's engineering philosophy. The 2005 Citroen C6 V6 HDi Exclusive holds a clear advantage in raw power with 208 hp compared to 107 hp, a 101-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 Citroen C6 relies on a V6 DOHC 24V Turbodiesel with 2,720 cc. In the sprint to 60 mph, the 2005 Citroen C6 V6 HDi Exclusive edges ahead at 8.5 seconds versus 13.5 seconds. The Citroen GS carries a weight advantage, tipping the scales 1444 lbs lighter. Rarity plays a significant role here — with only 847 units built, the 1970 Citroen GS Birotor is considerably scarcer than the Citroen C6's 23,399 examples. On the collector market, the 1970 Citroen GS Birotor commands a significant premium over the 2005 Citroen C6 V6 HDi Exclusive, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1970 Citroen GS Birotor rates higher among enthusiasts and auction houses.