2005 BMW 645 vs. 1985 Citroen BX
To start off, 2005 BMW 645 is newer by 20 year(s). Which means there will be less support and parts availability for 1985 Citroen BX. In addition, the cost of maintenance, including insurance, on 1985 Citroen BX would be higher. At 4,392 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (326 HP @ 6100 RPM) has 264 more horse power than 1985 Citroen BX. (62 HP @ 5500 RPM). In normal driving conditions, 2005 BMW 645 should accelerate faster than 1985 Citroen BX. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 1005 kg more than 1985 Citroen BX. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 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 2005 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1985 Citroen BX, 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, 2005 BMW 645 (447 Nm @ 3600 RPM) has 338 more torque (in Nm) than 1985 Citroen BX. (109 Nm @ 2500 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1985 Citroen BX.
Compare all specifications:
| 2005 BMW 645 | 1985 Citroen BX | |
| Make | BMW | Citroen |
| Model | 645 | BX |
| Year Released | 2005 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 1359 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 326 HP | 62 HP |
| Engine RPM | 6100 RPM | 5500 RPM |
| Torque | 447 Nm | 109 Nm |
| Torque RPM | 3600 RPM | 2500 RPM |
| Engine Bore Size | 92 mm | 75 mm |
| Engine Stroke Size | 83 mm | 77 mm |
| Engine Compression Ratio | 10.5:1 | 9.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 155 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1895 kg | 890 kg |
| Vehicle Length | 4830 mm | 4240 mm |
| Vehicle Width | 1860 mm | 1680 mm |
| Vehicle Height | 1380 mm | 1370 mm |
| Wheelbase Size | 2890 mm | 2860 mm |
| Fuel Consumption Overall | 12.8 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
