2006 BMW 645 vs. 1977 Citroen GS
To start off, 2006 BMW 645 is newer by 29 year(s). Which means there will be less support and parts availability for 1977 Citroen GS. In addition, the cost of maintenance, including insurance, on 1977 Citroen GS would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 273 more horse power than 1977 Citroen GS. (55 HP @ 6500 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 1977 Citroen GS. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 920 kg more than 1977 Citroen GS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2006 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1977 Citroen GS, being front wheel drive (FWD), will offer much better control with better grip. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2006 BMW 645 (450 Nm @ 3600 RPM) has 378 more torque (in Nm) than 1977 Citroen GS. (72 Nm @ 3500 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1977 Citroen GS.
Compare all specifications:
| 2006 BMW 645 | 1977 Citroen GS | |
| Make | BMW | Citroen |
| Model | 645 | GS |
| Year Released | 2006 | 1977 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1015 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 328 HP | 55 HP |
| Engine RPM | 6100 RPM | 6500 RPM |
| Torque | 450 Nm | 72 Nm |
| Torque RPM | 3600 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1810 kg | 890 kg |
| Vehicle Length | 4830 mm | 4130 mm |
| Vehicle Width | 1860 mm | 1620 mm |
| Vehicle Height | 1380 mm | 1360 mm |
| Wheelbase Size | 2790 mm | 2560 mm |
| Fuel Tank Capacity | 70 L | 43 L |
