2006 BMW MM Roadster vs. 2007 BMW 545
To start off, 2007 BMW 545 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW MM Roadster. In addition, the cost of maintenance, including insurance, on 2006 BMW MM Roadster would be higher. At 4,397 cc (8 cylinders), 2007 BMW 545 is equipped with a bigger engine. In terms of performance, 2006 BMW MM Roadster (330 HP @ 7900 RPM) has 2 more horse power than 2007 BMW 545. (328 HP @ 6100 RPM). In normal driving conditions, 2006 BMW MM Roadster should accelerate faster than 2007 BMW 545.
Let's talk about torque, 2007 BMW 545 (450 Nm @ 3600 RPM) has 95 more torque (in Nm) than 2006 BMW MM Roadster. (355 Nm @ 4900 RPM). This means 2007 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW MM Roadster.
Compare all specifications:
| 2006 BMW MM Roadster | 2007 BMW 545 | |
| Make | BMW | BMW |
| Model | MM Roadster | 545 |
| Year Released | 2006 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 3245 cc | 4397 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 330 HP | 328 HP |
| Engine RPM | 7900 RPM | 6100 RPM |
| Torque | 355 Nm | 450 Nm |
| Torque RPM | 4900 RPM | 3600 RPM |
| Engine Compression Ratio | 11.5:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4120 mm | 4850 mm |
| Vehicle Width | 1790 mm | 1850 mm |
| Vehicle Height | 1310 mm | 1500 mm |
| Wheelbase Size | 2500 mm | 2840 mm |
| Fuel Tank Capacity | 55 L | 70 L |
