2006 BMW Z4 vs. 2009 BMW 325
To start off, 2009 BMW 325 is newer by 3 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 2,979 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (229 HP @ 5900 RPM) has 14 more horse power than 2009 BMW 325. (215 HP @ 6500 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2009 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 325 weights approximately 45 kg more than 2006 BMW Z4.
Because 2009 BMW 325 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 BMW 325 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2006 BMW Z4 (300 Nm @ 3500 RPM) has 50 more torque (in Nm) than 2009 BMW 325. (250 Nm @ 2750 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 325.
Compare all specifications:
| 2006 BMW Z4 | 2009 BMW 325 | |
| Make | BMW | BMW |
| Model | Z4 | 325 |
| Year Released | 2006 | 2009 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 229 HP | 215 HP |
| Engine RPM | 5900 RPM | 6500 RPM |
| Torque | 300 Nm | 250 Nm |
| Torque RPM | 3500 RPM | 2750 RPM |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 90 mm | 78.8 mm |
| Engine Compression Ratio | 10.2:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 250 km/hour | 240 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 8 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1630 kg | 1675 kg |
| Vehicle Length | 4570 mm | 4530 mm |
| Vehicle Width | 1790 mm | 1820 mm |
| Vehicle Height | 1680 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2770 mm |
| Fuel Consumption Overall | 9.1 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 55 L | 63 L |
