1999 BMW Z9 vs. 1998 Daihatsu Sirion
To start off, 1999 BMW Z9 is newer by 1 year(s). Which means there will be less support and parts availability for 1998 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 1998 Daihatsu Sirion would be higher. At 4,397 cc (8 cylinders), 1999 BMW Z9 is equipped with a bigger engine. In terms of performance, 1999 BMW Z9 (242 HP @ 7400 RPM) has 142 more horse power than 1998 Daihatsu Sirion. (100 HP @ 7000 RPM). In normal driving conditions, 1999 BMW Z9 should accelerate faster than 1998 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 1999 BMW Z9 weights approximately 730 kg more than 1998 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1998 Daihatsu Sirion is four wheel drive (4WD), it will have significant more traction and grip than 1999 BMW Z9. In wet, icy, snow, or gravel driving conditions, 1998 Daihatsu Sirion 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, 1999 BMW Z9 (560 Nm @ 1750 RPM) has 440 more torque (in Nm) than 1998 Daihatsu Sirion. (120 Nm @ 4400 RPM). This means 1999 BMW Z9 will have an easier job in driving up hills or pulling heavy equipment than 1998 Daihatsu Sirion.
Compare all specifications:
| 1999 BMW Z9 | 1998 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | Z9 | Sirion |
| Year Released | 1999 | 1998 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4397 cc | 1298 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 242 HP | 100 HP |
| Engine RPM | 7400 RPM | 7000 RPM |
| Torque | 560 Nm | 120 Nm |
| Torque RPM | 1750 RPM | 4400 RPM |
| Engine Compression Ratio | 18.0:1 | 11.0:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1630 kg | 900 kg |
| Vehicle Length | 5010 mm | 3680 mm |
| Vehicle Width | 1980 mm | 1600 mm |
| Vehicle Height | 1350 mm | 1460 mm |
| Wheelbase Size | 3060 mm | 2350 mm |
