2006 BMW X5 vs. 1987 Ford Sierra
To start off, 2006 BMW X5 is newer by 19 year(s). Which means there will be less support and parts availability for 1987 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1987 Ford Sierra would be higher. At 2,926 cc (6 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 1987 Ford Sierra (204 HP @ 6250 RPM) has 22 more horse power than 2006 BMW X5. (182 HP @ 2000 RPM) In normal driving conditions, 1987 Ford Sierra should accelerate faster than 2006 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 380 kg more than 1987 Ford Sierra.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1987 Ford Sierra. In wet, icy, snow, or gravel driving conditions, 2006 BMW X5 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 X5 (410 Nm @ 2000 RPM) has 133 more torque (in Nm) than 1987 Ford Sierra. (277 Nm @ 4500 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 2006 BMW X5 | 1987 Ford Sierra | |
| Make | BMW | Ford |
| Model | X5 | Sierra |
| Year Released | 2006 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 2926 cc | 1993 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 182 HP | 204 HP |
| Engine RPM | 2000 RPM | 6250 RPM |
| Torque | 410 Nm | 277 Nm |
| Torque RPM | 2000 RPM | 4500 RPM |
| Engine Bore Size | 84 mm | 90.8 mm |
| Engine Stroke Size | 88 mm | 77 mm |
| Engine Compression Ratio | 18.0:1 | 8.0:1 |
| Top Speed | 200 km/hour | 240 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1630 kg | 1250 kg |
| Vehicle Length | 4670 mm | 4470 mm |
| Vehicle Width | 1880 mm | 1710 mm |
| Vehicle Height | 1720 mm | 1380 mm |
| Wheelbase Size | 2830 mm | 2500 mm |
