2009 BMW Z4 vs. 1999 Daihatsu Sirion
To start off, 2009 BMW Z4 is newer by 10 year(s). Which means there will be less support and parts availability for 1999 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 1999 Daihatsu Sirion would be higher. At 1,995 cc (6 cylinders), 2009 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (148 HP @ 6200 RPM) has 76 more horse power than 1999 Daihatsu Sirion. (72 HP @ 5200 RPM). In normal driving conditions, 2009 BMW Z4 should accelerate faster than 1999 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW Z4 weights approximately 535 kg more than 1999 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW Z4 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 2009 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 1999 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, 2009 BMW Z4 (200 Nm @ 3600 RPM) has 99 more torque (in Nm) than 1999 Daihatsu Sirion. (101 Nm @ 3600 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Daihatsu Sirion.
Compare all specifications:
| 2009 BMW Z4 | 1999 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | Z4 | Sirion |
| Year Released | 2009 | 1999 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1298 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 72 HP |
| Engine RPM | 6200 RPM | 5200 RPM |
| Torque | 200 Nm | 101 Nm |
| Torque RPM | 3600 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1385 kg | 850 kg |
| Vehicle Length | 4100 mm | 3680 mm |
| Vehicle Width | 1310 mm | 1600 mm |
| Vehicle Height | 1790 mm | 1460 mm |
| Wheelbase Size | 2500 mm | 2350 mm |
