2005 BMW 325 vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW 325. In addition, the cost of maintenance, including insurance, on 2005 BMW 325 would be higher. At 3,246 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (343 HP @ 7900 RPM) has 159 more horse power than 2005 BMW 325. (184 HP @ 6100 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2005 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 325 weights approximately 308 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 (495 Nm @ 4900 RPM) has 250 more torque (in Nm) than 2005 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 2005 BMW 325.
Compare all specifications:
| 2005 BMW 325 | 2006 BMW Z4 | |
| Make | BMW | BMW |
| Model | 325 | Z4 |
| Year Released | 2005 | 2006 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 3246 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 184 HP | 343 HP |
| Engine RPM | 6100 RPM | 7900 RPM |
| Torque | 245 Nm | 495 Nm |
| Torque RPM | 3500 RPM | 4900 RPM |
| Engine Compression Ratio | 11.0:1 | 11.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 234 km/hour | 249 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 5 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1640 kg | 1332 kg |
| Vehicle Length | 4490 mm | 4100 mm |
| Vehicle Width | 1760 mm | 1790 mm |
| Vehicle Height | 1380 mm | 1300 mm |
| Wheelbase Size | 2730 mm | 2500 mm |
| Fuel Consumption Overall | 9.6 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
