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, 2006 BMW MM Roadster (330 HP @ 7900 RPM) has 115 more horse power than 2009 BMW Z4. (215 HP @ 6500 RPM) In normal driving conditions, 2006 BMW MM Roadster should accelerate faster than 2009 BMW Z4.
Let's talk about torque, 2006 BMW MM Roadster (355 Nm @ 4900 RPM) has 105 more torque (in Nm) than 2009 BMW Z4. (250 Nm @ 2750 RPM). This means 2006 BMW MM Roadster will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4.
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 | 2497 cc | 3245 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 330 HP |
| Engine RPM | 6500 RPM | 7900 RPM |
| Torque | 250 Nm | 355 Nm |
| Torque RPM | 2750 RPM | 4900 RPM |
| Engine Compression Ratio | 11.0:1 | 11.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4100 mm | 4120 mm |
| Vehicle Width | 1310 mm | 1790 mm |
| Vehicle Height | 1790 mm | 1310 mm |
| Wheelbase Size | 2500 mm | 2500 mm |
| Fuel Tank Capacity | 55 L | 55 L |
