1973 BMW 525 vs. 2007 BMW X3
To start off, 2007 BMW X3 is newer by 34 year(s). Which means there will be less support and parts availability for 1973 BMW 525. In addition, the cost of maintenance, including insurance, on 1973 BMW 525 would be higher. At 2,992 cc (6 cylinders), 2007 BMW X3 is equipped with a bigger engine. In terms of performance, 2007 BMW X3 (215 HP @ 4000 RPM) has 72 more horse power than 1973 BMW 525. (143 HP @ 6000 RPM) In normal driving conditions, 2007 BMW X3 should accelerate faster than 1973 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 385 kg more than 1973 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 1973 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 (480 Nm @ 1750 RPM) has 272 more torque (in Nm) than 1973 BMW 525. (208 Nm @ 4000 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 1973 BMW 525. 2007 BMW X3 has automatic transmission and 1973 BMW 525 has manual transmission. 1973 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:
| 1973 BMW 525 | 2007 BMW X3 | |
| Make | BMW | BMW |
| Model | 525 | X3 |
| Year Released | 1973 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2992 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 143 HP | 215 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 208 Nm | 480 Nm |
| Torque RPM | 4000 RPM | 1750 RPM |
| Engine Bore Size | 86 mm | 84 mm |
| Engine Stroke Size | 71.6 mm | 90 mm |
| Engine Compression Ratio | 9.0:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 192 km/hour | 210 km/hour |
| Acceleration 0-100mph | 10.5 seconds | 7.9 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1380 kg | 1765 kg |
| Vehicle Length | 4630 mm | 4570 mm |
| Vehicle Width | 1700 mm | 1680 mm |
| Vehicle Height | 1430 mm | 1860 mm |
| Wheelbase Size | 2640 mm | 2800 mm |
| Fuel Tank Capacity | 70 L | 67 L |
