2007 BMW Alpina vs. 2003 Daihatsu Sirion
To start off, 2007 BMW Alpina is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 2003 Daihatsu Sirion would be higher. At 4,397 cc (8 cylinders), 2007 BMW Alpina is equipped with a bigger engine. In terms of performance, 2007 BMW Alpina (500 HP) has 428 more horse power than 2003 Daihatsu Sirion. (72 HP). In normal driving conditions, 2007 BMW Alpina should accelerate faster than 2003 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Alpina weights approximately 1123 kg more than 2003 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2007 BMW Alpina (700 Nm @ 4250 RPM) has 599 more torque (in Nm) than 2003 Daihatsu Sirion. (101 Nm @ 3600 RPM). This means 2007 BMW Alpina will have an easier job in driving up hills or pulling heavy equipment than 2003 Daihatsu Sirion. 2007 BMW Alpina has automatic transmission and 2003 Daihatsu Sirion has manual transmission. 2003 Daihatsu Sirion will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW Alpina will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Alpina | 2003 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | Alpina | Sirion |
| Year Released | 2007 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 4397 cc | 1298 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 500 HP | 72 HP |
| Torque | 700 Nm | 101 Nm |
| Torque RPM | 4250 RPM | 3600 RPM |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1975 kg | 852 kg |
| Vehicle Length | 5050 mm | 3680 mm |
| Vehicle Width | 1910 mm | 1600 mm |
| Vehicle Height | 1480 mm | 1460 mm |
| Wheelbase Size | 3000 mm | 2350 mm |
