2006 BMW X5 vs. 1988 BMW 525
To start off, 2006 BMW X5 is newer by 18 year(s). Which means there will be less support and parts availability for 1988 BMW 525. In addition, the cost of maintenance, including insurance, on 1988 BMW 525 would be higher. At 4,398 cc (8 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (282 HP @ 3600 RPM) has 117 more horse power than 1988 BMW 525. (165 HP @ 5800 RPM). In normal driving conditions, 2006 BMW X5 should accelerate faster than 1988 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 590 kg more than 1988 BMW 525. 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 1988 BMW 525. 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 (441 Nm @ 3600 RPM) has 202 more torque (in Nm) than 1988 BMW 525. (239 Nm @ 4300 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1988 BMW 525.
Compare all specifications:
| 2006 BMW X5 | 1988 BMW 525 | |
| Make | BMW | BMW |
| Model | X5 | 525 |
| Year Released | 2006 | 1988 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2441 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 282 HP | 165 HP |
| Engine RPM | 3600 RPM | 5800 RPM |
| Torque | 441 Nm | 239 Nm |
| Torque RPM | 3600 RPM | 4300 RPM |
| Engine Bore Size | 92 mm | 84 mm |
| Engine Stroke Size | 82.7 mm | 75 mm |
| Top Speed | 206 km/hour | 203 km/hour |
| Acceleration 0-100mph | 7.5 seconds | 11.6 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2195 kg | 1605 kg |
| Vehicle Length | 4670 mm | 4730 mm |
| Vehicle Width | 1880 mm | 1760 mm |
| Vehicle Height | 1710 mm | 1420 mm |
| Wheelbase Size | 2830 mm | 2770 mm |
| Fuel Tank Capacity | 93 L | 70 L |
