2003 BMW 730 vs. 2007 BMW Convertible
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 730. In addition, the cost of maintenance, including insurance, on 2003 BMW 730 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 134 more horse power than 2003 BMW 730. (228 HP @ 5900 RPM) In normal driving conditions, 2007 BMW Convertible should accelerate faster than 2003 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Convertible weights approximately 60 kg more than 2003 BMW 730. 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 190 more torque (in Nm) than 2003 BMW 730. (300 Nm @ 3500 RPM). This means 2007 BMW Convertible will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 730.
Compare all specifications:
| 2003 BMW 730 | 2007 BMW Convertible | |
| Make | BMW | BMW |
| Model | 730 | Convertible |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 4799 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 228 HP | 362 HP |
| Engine RPM | 5900 RPM | 6300 RPM |
| Torque | 300 Nm | 490 Nm |
| Torque RPM | 3500 RPM | 3600 RPM |
| Engine Compression Ratio | 10.2:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1790 kg | 1850 kg |
| Vehicle Length | 5040 mm | 4830 mm |
| Vehicle Width | 1910 mm | 1380 mm |
| Vehicle Height | 1500 mm | 1860 mm |
| Wheelbase Size | 3000 mm | 2790 mm |
| Fuel Tank Capacity | 63 L | 70 L |
