2007 BMW Convertible vs. 2008 Daihatsu Sirion
To start off, 2008 Daihatsu Sirion is newer by 1 year(s). Which means there will be less support and parts availability for 2007 BMW Convertible. In addition, the cost of maintenance, including insurance, on 2007 BMW Convertible would be higher. At 4,799 cc (8 cylinders), 2007 BMW Convertible is equipped with a bigger engine. In terms of performance, 2007 BMW Convertible (362 HP @ 6300 RPM) has 260 more horse power than 2008 Daihatsu Sirion. (102 HP @ 6000 RPM). In normal driving conditions, 2007 BMW Convertible should accelerate faster than 2008 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Convertible weights approximately 885 kg more than 2008 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 Convertible (490 Nm @ 3400 RPM) has 357 more torque (in Nm) than 2008 Daihatsu Sirion. (133 Nm @ 4400 RPM). This means 2007 BMW Convertible will have an easier job in driving up hills or pulling heavy equipment than 2008 Daihatsu Sirion. 2007 BMW Convertible has automatic transmission and 2008 Daihatsu Sirion has manual transmission. 2008 Daihatsu Sirion will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW Convertible will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Convertible | 2008 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | Convertible | Sirion |
| Year Released | 2007 | 2008 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 1495 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 362 HP | 102 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 490 Nm | 133 Nm |
| Torque RPM | 3400 RPM | 4400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Acceleration 0-100mph | 5.7 seconds | 10.5 seconds |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1850 kg | 965 kg |
| Vehicle Length | 4830 mm | 3400 mm |
| Vehicle Height | 1860 mm | 1250 mm |
| Wheelbase Size | 2790 mm | 2440 mm |
| Fuel Tank Capacity | 70 L | 40 L |
