2006 BMW Z4 vs. 2004 BMW 325
To start off, 2006 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 BMW 325. In addition, the cost of maintenance, including insurance, on 2004 BMW 325 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 (228 HP @ 5900 RPM) has 39 more horse power than 2004 BMW 325. (189 HP @ 6200 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2004 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 325 weights approximately 130 kg more than 2006 BMW Z4.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 (301 Nm @ 3500 RPM) has 56 more torque (in Nm) than 2004 BMW 325. (245 Nm @ 3500 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 325.
Compare all specifications:
| 2006 BMW Z4 | 2004 BMW 325 | |
| Make | BMW | BMW |
| Model | Z4 | 325 |
| Year Released | 2006 | 2004 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 228 HP | 189 HP |
| Engine RPM | 5900 RPM | 6200 RPM |
| Torque | 301 Nm | 245 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 89.6 mm | 75 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 240 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 7.3 seconds |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1365 kg | 1495 kg |
| Vehicle Length | 4100 mm | 4480 mm |
| Vehicle Width | 1790 mm | 1750 mm |
| Vehicle Height | 1310 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2800 mm |
| Fuel Consumption Overall | 9.1 L/100km | 9.3 L/100km |
| Fuel Tank Capacity | 55 L | 63 L |
