2007 BMW Convertible vs. 2003 BMW 520
To start off, 2007 BMW Convertible is newer by 4 year(s). Which means there will be less support and parts availability for 2003 BMW 520. In addition, the cost of maintenance, including insurance, on 2003 BMW 520 would be higher. At 4,797 cc (8 cylinders), 2007 BMW Convertible is equipped with a bigger engine. In terms of performance, 2007 BMW Convertible (362 HP @ 6300 RPM) has 195 more horse power than 2003 BMW 520. (167 HP @ 6100 RPM). In normal driving conditions, 2007 BMW Convertible should accelerate faster than 2003 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Convertible weights approximately 150 kg more than 2003 BMW 520. 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 @ 3900 RPM) has 280 more torque (in Nm) than 2003 BMW 520. (210 Nm @ 3500 RPM). This means 2007 BMW Convertible will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 520.
Compare all specifications:
| 2007 BMW Convertible | 2003 BMW 520 | |
| Make | BMW | BMW |
| Model | Convertible | 520 |
| Year Released | 2007 | 2003 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4797 cc | 2171 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 362 HP | 167 HP |
| Engine RPM | 6300 RPM | 6100 RPM |
| Torque | 490 Nm | 210 Nm |
| Torque RPM | 3900 RPM | 3500 RPM |
| Engine Compression Ratio | 10.5:1 | 10.7:1 |
| Top Speed | 250 km/hour | 217 km/hour |
| Acceleration 0-100mph | 5.8 seconds | 10.5 seconds |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1850 kg | 1700 kg |
| Vehicle Length | 4830 mm | 4810 mm |
| Vehicle Width | 1380 mm | 1810 mm |
| Vehicle Height | 1860 mm | 1450 mm |
| Wheelbase Size | 2790 mm | 2730 mm |
| Fuel Tank Capacity | 70 L | 70 L |
