2007 BMW Convertible vs. 2009 Saturn Astra
To start off, 2009 Saturn Astra is newer by 2 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 (363 HP @ 6300 RPM) has 225 more horse power than 2009 Saturn Astra. (138 HP @ 6300 RPM). In normal driving conditions, 2007 BMW Convertible should accelerate faster than 2009 Saturn Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Convertible weights approximately 506 kg more than 2009 Saturn Astra. 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 @ 3600 RPM) has 320 more torque (in Nm) than 2009 Saturn Astra. (170 Nm @ 3800 RPM). This means 2007 BMW Convertible will have an easier job in driving up hills or pulling heavy equipment than 2009 Saturn Astra.
Compare all specifications:
| 2007 BMW Convertible | 2009 Saturn Astra | |
| Make | BMW | Saturn |
| Model | Convertible | Astra |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 1799 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 363 HP | 138 HP |
| Engine RPM | 6300 RPM | 6300 RPM |
| Torque | 490 Nm | 170 Nm |
| Torque RPM | 3600 RPM | 3800 RPM |
| Engine Compression Ratio | 10.5:1 | 10.4:1 |
| Fuel Type | Gasoline | Gasoline |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1850 kg | 1344 kg |
| Vehicle Length | 4830 mm | 4340 mm |
| Vehicle Width | 1380 mm | 1760 mm |
| Vehicle Height | 1860 mm | 1460 mm |
| Wheelbase Size | 2790 mm | 2620 mm |
| Fuel Tank Capacity | 70 L | 45 L |
