2006 BMW 323 vs. 2011 BMW Z4
To start off, 2011 BMW Z4 is newer by 5 year(s). Which means there will be less support and parts availability for 2006 BMW 323. In addition, the cost of maintenance, including insurance, on 2006 BMW 323 would be higher. At 3,000 cc (6 cylinders), 2011 BMW Z4 is equipped with a bigger engine. In terms of performance, 2011 BMW Z4 (335 HP @ 5900 RPM) has 160 more horse power than 2006 BMW 323. (175 HP @ 5800 RPM) In normal driving conditions, 2011 BMW Z4 should accelerate faster than 2006 BMW 323.
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, 2011 BMW Z4 (450 Nm) has 220 more torque (in Nm) than 2006 BMW 323. (230 Nm). This means 2011 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 323.
Compare all specifications:
| 2006 BMW 323 | 2011 BMW Z4 | |
| Make | BMW | BMW |
| Model | 323 | Z4 |
| Year Released | 2006 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 3000 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 335 HP |
| Engine RPM | 5800 RPM | 5900 RPM |
| Torque | 230 Nm | 450 Nm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Width | 1850 mm | 1791 mm |
| Fuel Tank Capacity | 63 L | 55 L |
