2004 BMW Z4 vs. 2006 BMW 545
To start off, 2006 BMW 545 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 BMW Z4. In addition, the cost of maintenance, including insurance, on 2004 BMW Z4 would be higher. At 2,983 cc (6 cylinders), 2004 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW 545 (328 HP @ 6100 RPM) has 103 more horse power than 2004 BMW Z4. (225 HP @ 5900 RPM) In normal driving conditions, 2006 BMW 545 should accelerate faster than 2004 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 545 (450 Nm @ 3700 RPM) has 150 more torque (in Nm) than 2004 BMW Z4. (300 Nm @ 3500 RPM). This means 2006 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW Z4.
Compare all specifications:
| 2004 BMW Z4 | 2006 BMW 545 | |
| Make | BMW | BMW |
| Model | Z4 | 545 |
| Year Released | 2004 | 2006 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2983 cc | 2494 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 328 HP |
| Engine RPM | 5900 RPM | 6100 RPM |
| Torque | 300 Nm | 450 Nm |
| Torque RPM | 3500 RPM | 3700 RPM |
| Acceleration 0-100mph | 5.9 seconds | 5.8 seconds |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Width | 1790 mm | 1850 mm |
| Fuel Consumption Overall | 9.1 L/100km | 10.9 L/100km |
| Fuel Tank Capacity | 55 L | 70 L |
