1981 BMW 525 vs. 2005 Citroen C4
To start off, 2005 Citroen C4 is newer by 24 year(s). Which means there will be less support and parts availability for 1981 BMW 525. In addition, the cost of maintenance, including insurance, on 1981 BMW 525 would be higher. At 2,495 cc (6 cylinders), 1981 BMW 525 is equipped with a bigger engine. In terms of performance, 2005 Citroen C4 (176 HP @ 7000 RPM) has 28 more horse power than 1981 BMW 525. (148 HP @ 5500 RPM) In normal driving conditions, 2005 Citroen C4 should accelerate faster than 1981 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2005 Citroen C4 weights approximately 132 kg more than 1981 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1981 BMW 525 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 1981 BMW 525. However, in wet, icy, snow, or gravel driving conditions, 2005 Citroen C4, 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, 1981 BMW 525 (215 Nm @ 4000 RPM) has 15 more torque (in Nm) than 2005 Citroen C4. (200 Nm @ 4750 RPM). This means 1981 BMW 525 will have an easier job in driving up hills or pulling heavy equipment than 2005 Citroen C4.
Compare all specifications:
| 1981 BMW 525 | 2005 Citroen C4 | |
| Make | BMW | Citroen |
| Model | 525 | C4 |
| Year Released | 1981 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2495 cc | 1997 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 176 HP |
| Engine RPM | 5500 RPM | 7000 RPM |
| Torque | 215 Nm | 200 Nm |
| Torque RPM | 4000 RPM | 4750 RPM |
| Engine Bore Size | 86.1 mm | 85 mm |
| Engine Stroke Size | 71.6 mm | 88 mm |
| Engine Compression Ratio | 9.6:1 | 11.0:1 |
| Acceleration 0-100mph | 8.6 seconds | 8.9 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1280 kg | 1412 kg |
| Vehicle Length | 4780 mm | 4280 mm |
| Vehicle Width | 1810 mm | 1780 mm |
| Vehicle Height | 1440 mm | 1460 mm |
| Wheelbase Size | 2630 mm | 2610 mm |
| Fuel Consumption Overall | 9.4 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
