1984 BMW 725 vs. 2006 Daihatsu Sirion
To start off, 2006 Daihatsu Sirion is newer by 22 year(s). Which means there will be less support and parts availability for 1984 BMW 725. In addition, the cost of maintenance, including insurance, on 1984 BMW 725 would be higher. At 2,495 cc (6 cylinders), 1984 BMW 725 is equipped with a bigger engine. In terms of performance, 1984 BMW 725 (148 HP @ 5500 RPM) has 62 more horse power than 2006 Daihatsu Sirion. (86 HP @ 6000 RPM). In normal driving conditions, 1984 BMW 725 should accelerate faster than 2006 Daihatsu Sirion.
Because 1984 BMW 725 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1984 BMW 725. However, in wet, icy, snow, or gravel driving conditions, 2006 Daihatsu Sirion, being front wheel drive (FWD), will offer much better control with better grip. 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, 1984 BMW 725 (215 Nm @ 4000 RPM) has 95 more torque (in Nm) than 2006 Daihatsu Sirion. (120 Nm @ 3200 RPM). This means 1984 BMW 725 will have an easier job in driving up hills or pulling heavy equipment than 2006 Daihatsu Sirion.
Compare all specifications:
| 1984 BMW 725 | 2006 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | 725 | Sirion |
| Year Released | 1984 | 2006 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2495 cc | 1298 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 86 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 215 Nm | 120 Nm |
| Torque RPM | 4000 RPM | 3200 RPM |
| Engine Bore Size | 86 mm | 72.1 mm |
| Engine Stroke Size | 71.6 mm | 79.7 mm |
| Engine Compression Ratio | 9.6:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4870 mm | 3400 mm |
| Vehicle Height | 1440 mm | 1250 mm |
| Wheelbase Size | 2810 mm | 2440 mm |
