2007 BMW X3 vs. 1990 BMW 525
To start off, 2007 BMW X3 is newer by 17 year(s). Which means there will be less support and parts availability for 1990 BMW 525. In addition, the cost of maintenance, including insurance, on 1990 BMW 525 would be higher. At 2,996 cc (6 cylinders), 2007 BMW X3 is equipped with a bigger engine. In terms of performance, 2007 BMW X3 (268 HP @ 6600 RPM) has 83 more horse power than 1990 BMW 525. (185 HP @ 5900 RPM). In normal driving conditions, 2007 BMW X3 should accelerate faster than 1990 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 240 kg more than 1990 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 1990 BMW 525. In wet, icy, snow, or gravel driving conditions, 2007 BMW X3 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, 2007 BMW X3 (315 Nm @ 2750 RPM) has 75 more torque (in Nm) than 1990 BMW 525. (240 Nm @ 4700 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 525. 2007 BMW X3 has automatic transmission and 1990 BMW 525 has manual transmission. 1990 BMW 525 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW X3 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW X3 | 1990 BMW 525 | |
| Make | BMW | BMW |
| Model | X3 | 525 |
| Year Released | 2007 | 1990 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 268 HP | 185 HP |
| Engine RPM | 6600 RPM | 5900 RPM |
| Torque | 315 Nm | 240 Nm |
| Torque RPM | 2750 RPM | 4700 RPM |
| Engine Bore Size | 85 mm | 84 mm |
| Engine Stroke Size | 88 mm | 75 mm |
| Engine Compression Ratio | 10.7:1 | 10.0:1 |
| Top Speed | 210 km/hour | 224 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 9.2 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1575 kg |
| Vehicle Length | 4570 mm | 4730 mm |
| Vehicle Width | 1680 mm | 1760 mm |
| Vehicle Height | 1860 mm | 1420 mm |
| Wheelbase Size | 2800 mm | 2770 mm |
