2007 BMW 323 vs. 2006 BMW Z4
To start off, 2007 BMW 323 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 2,999 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (255 HP @ 6600 RPM) has 80 more horse power than 2007 BMW 323. (175 HP @ 5800 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2007 BMW 323. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 341 kg more than 2007 BMW 323. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 (298 Nm @ 2750 RPM) has 68 more torque (in Nm) than 2007 BMW 323. (230 Nm @ 3500 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 323.
Compare all specifications:
| 2007 BMW 323 | 2006 BMW Z4 | |
| Make | BMW | BMW |
| Model | 323 | Z4 |
| Year Released | 2007 | 2006 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 2999 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 255 HP |
| Engine RPM | 5800 RPM | 6600 RPM |
| Torque | 230 Nm | 298 Nm |
| Torque RPM | 3500 RPM | 2750 RPM |
| Engine Compression Ratio | 11.0:1 | 10.7:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1494 kg | 1835 kg |
| Vehicle Length | 4530 mm | 4100 mm |
| Vehicle Width | 1430 mm | 1790 mm |
| Vehicle Height | 1820 mm | 1270 mm |
| Wheelbase Size | 2770 mm | 2500 mm |
| Fuel Consumption Overall | 7.5 L/100km | 9.8 L/100km |
| Fuel Tank Capacity | 60 L | 55 L |
