2007 BMW X5 vs. 1979 BMW 725
To start off, 2007 BMW X5 is newer by 28 year(s). Which means there will be less support and parts availability for 1979 BMW 725. In addition, the cost of maintenance, including insurance, on 1979 BMW 725 would be higher. At 2,979 cc (6 cylinders), 2007 BMW X5 is equipped with a bigger engine. In terms of performance, 2007 BMW X5 (228 HP @ 5900 RPM) has 80 more horse power than 1979 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2007 BMW X5 should accelerate faster than 1979 BMW 725.
Because 2007 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1979 BMW 725. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 BMW X5 (300 Nm @ 3500 RPM) has 85 more torque (in Nm) than 1979 BMW 725. (215 Nm @ 4000 RPM). This means 2007 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1979 BMW 725.
Compare all specifications:
| 2007 BMW X5 | 1979 BMW 725 | |
| Make | BMW | BMW |
| Model | X5 | 725 |
| Year Released | 2007 | 1979 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 2495 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 228 HP | 148 HP |
| Engine RPM | 5900 RPM | 5500 RPM |
| Torque | 300 Nm | 215 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Compression Ratio | 10.0:1 | 9.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4670 mm | 4870 mm |
| Vehicle Width | 1880 mm | 1810 mm |
| Vehicle Height | 1720 mm | 1440 mm |
| Wheelbase Size | 2830 mm | 2810 mm |
