2006 BMW 645 vs. 1985 Citroen BX
To start off, 2006 BMW 645 is newer by 21 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 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 128 more horse power than 1985 Citroen BX. (200 HP @ 5250 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 1985 Citroen BX. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 530 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 1985 Citroen BX is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW 645. In wet, icy, snow, or gravel driving conditions, 1985 Citroen BX will offer significantly more control. 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 156 more torque (in Nm) than 1985 Citroen BX. (294 Nm @ 2750 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1985 Citroen BX. 2006 BMW 645 has automatic transmission and 1985 Citroen BX has manual transmission. 1985 Citroen BX will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW 645 | 1985 Citroen BX | |
| Make | BMW | Citroen |
| Model | 645 | BX |
| Year Released | 2006 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2141 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 328 HP | 200 HP |
| Engine RPM | 6100 RPM | 5250 RPM |
| Torque | 450 Nm | 294 Nm |
| Torque RPM | 3600 RPM | 2750 RPM |
| Engine Compression Ratio | 10.0:1 | 7.0:1 |
| Top Speed | 250 km/hour | 217 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1810 kg | 1280 kg |
| Vehicle Length | 4830 mm | 4520 mm |
| Vehicle Width | 1860 mm | 1840 mm |
| Wheelbase Size | 2790 mm | 2660 mm |
