2009 BMW Z4 vs. 2006 BMW MM Roadster
To start off, 2009 BMW Z4 is newer by 3 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 3,245 cc (6 cylinders), 2006 BMW MM Roadster is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (338 HP @ 7900 RPM) has 8 more horse power than 2006 BMW MM Roadster. (330 HP @ 7900 RPM). In normal driving conditions, 2009 BMW Z4 should accelerate faster than 2006 BMW MM Roadster.
Let's talk about torque, 2009 BMW Z4 (365 Nm @ 4900 RPM) has 10 more torque (in Nm) than 2006 BMW MM Roadster. (355 Nm @ 4900 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW MM Roadster.
Compare all specifications:
| 2009 BMW Z4 | 2006 BMW MM Roadster | |
| Make | BMW | BMW |
| Model | Z4 | MM Roadster |
| Year Released | 2009 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 3244 cc | 3245 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 330 HP |
| Engine RPM | 7900 RPM | 7900 RPM |
| Torque | 365 Nm | 355 Nm |
| Torque RPM | 4900 RPM | 4900 RPM |
| Engine Compression Ratio | 11.5:1 | 11.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4120 mm | 4120 mm |
| Vehicle Width | 1790 mm | 1790 mm |
| Vehicle Height | 1290 mm | 1310 mm |
| Wheelbase Size | 2500 mm | 2500 mm |
| Fuel Tank Capacity | 60 L | 55 L |
