2007 BMW Convertible vs. 1984 BMW 725
To start off, 2007 BMW Convertible is newer by 23 year(s). Which means there will be less support and parts availability for 1984 BMW 725. In addition, the cost of maintenance, including insurance, on 1984 BMW 725 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 214 more horse power than 1984 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2007 BMW Convertible should accelerate faster than 1984 BMW 725.
Let's talk about torque, 2007 BMW Convertible (490 Nm @ 3900 RPM) has 275 more torque (in Nm) than 1984 BMW 725. (215 Nm @ 4000 RPM). This means 2007 BMW Convertible will have an easier job in driving up hills or pulling heavy equipment than 1984 BMW 725.
Compare all specifications:
| 2007 BMW Convertible | 1984 BMW 725 | |
| Make | BMW | BMW |
| Model | Convertible | 725 |
| Year Released | 2007 | 1984 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4797 cc | 2495 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 362 HP | 148 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 490 Nm | 215 Nm |
| Torque RPM | 3900 RPM | 4000 RPM |
| Engine Compression Ratio | 10.5:1 | 9.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4830 mm | 4870 mm |
| Vehicle Width | 1380 mm | 1810 mm |
| Vehicle Height | 1860 mm | 1440 mm |
| Wheelbase Size | 2790 mm | 2810 mm |
