2006 BMW Z4 vs. 2007 BMW 328
To start off, 2007 BMW 328 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 would be higher. At 2,996 cc (6 cylinders), 2007 BMW 328 is equipped with a bigger engine. In terms of performance, 2007 BMW 328 (230 HP @ 6500 RPM) has 41 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM) In normal driving conditions, 2007 BMW 328 should accelerate faster than 2006 BMW Z4.
Let's talk about torque, 2007 BMW 328 (271 Nm @ 2750 RPM) has 26 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 2007 BMW 328 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 2007 BMW 328 | |
| Make | BMW | BMW |
| Model | Z4 | 328 |
| Year Released | 2006 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 230 HP |
| Engine RPM | 6000 RPM | 6500 RPM |
| Torque | 245 Nm | 271 Nm |
| Torque RPM | 3500 RPM | 2750 RPM |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4100 mm | 4530 mm |
| Vehicle Width | 1790 mm | 1820 mm |
| Vehicle Height | 1310 mm | 1430 mm |
| Wheelbase Size | 2500 mm | 2770 mm |
| Fuel Consumption Overall | 9 L/100km | 10.2 L/100km |
| Fuel Tank Capacity | 55 L | 60 L |
