1973 BMW Touring vs. 2003 BMW X3
To start off, 2003 BMW X3 is newer by 30 year(s). Which means there will be less support and parts availability for 1973 BMW Touring. In addition, the cost of maintenance, including insurance, on 1973 BMW Touring would be higher. At 2,979 cc (6 cylinders), 2003 BMW X3 is equipped with a bigger engine. In terms of performance, 2003 BMW X3 (228 HP @ 5900 RPM) has 143 more horse power than 1973 BMW Touring. (85 HP @ 5700 RPM) In normal driving conditions, 2003 BMW X3 should accelerate faster than 1973 BMW Touring. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW X3 weights approximately 810 kg more than 1973 BMW Touring. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2003 BMW X3 (300 Nm @ 3500 RPM) has 170 more torque (in Nm) than 1973 BMW Touring. (130 Nm @ 3500 RPM). This means 2003 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 1973 BMW Touring.
Compare all specifications:
| 1973 BMW Touring | 2003 BMW X3 | |
| Make | BMW | BMW |
| Model | Touring | X3 |
| Year Released | 1973 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 1573 cc | 2979 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 85 HP | 228 HP |
| Engine RPM | 5700 RPM | 5900 RPM |
| Torque | 130 Nm | 300 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 84.1 mm |
| Engine Stroke Size | 71 mm | 89.6 mm |
| Engine Compression Ratio | 8.6:1 | 10.2:1 |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1030 kg | 1840 kg |
| Vehicle Length | 4120 mm | 4570 mm |
| Vehicle Width | 1600 mm | 1860 mm |
| Vehicle Height | 1390 mm | 1680 mm |
| Wheelbase Size | 2510 mm | 2730 mm |
