2006 BMW X5 vs. 1981 Subaru Rex
To start off, 2006 BMW X5 is newer by 25 year(s). Which means there will be less support and parts availability for 1981 Subaru Rex. In addition, the cost of maintenance, including insurance, on 1981 Subaru Rex would be higher. At 2,926 cc (6 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (181 HP @ 2000 RPM) has 150 more horse power than 1981 Subaru Rex. (31 HP @ 6000 RPM). In normal driving conditions, 2006 BMW X5 should accelerate faster than 1981 Subaru Rex. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 1075 kg more than 1981 Subaru Rex. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1981 Subaru Rex. 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 367 more torque (in Nm) than 1981 Subaru Rex. (43 Nm @ 3500 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1981 Subaru Rex.
Compare all specifications:
| 2006 BMW X5 | 1981 Subaru Rex | |
| Make | BMW | Subaru |
| Model | X5 | Rex |
| Year Released | 2006 | 1981 |
| Body Type | SUV | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2926 cc | 543 cc |
| Engine Cylinders | 6 cylinders | 2 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 181 HP | 31 HP |
| Engine RPM | 2000 RPM | 6000 RPM |
| Torque | 410 Nm | 43 Nm |
| Torque RPM | 2000 RPM | 3500 RPM |
| Engine Compression Ratio | 18.0:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 3 doors |
| Vehicle Weight | 1630 kg | 555 kg |
| Vehicle Length | 4670 mm | 3250 mm |
| Vehicle Width | 1880 mm | 1400 mm |
| Vehicle Height | 1720 mm | 1360 mm |
| Wheelbase Size | 2830 mm | 2260 mm |
