2009 BMW Z4 vs. 2003 BMW 545
To start off, 2009 BMW Z4 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 BMW 545. In addition, the cost of maintenance, including insurance, on 2003 BMW 545 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 545 is equipped with a bigger engine. In terms of performance, 2003 BMW 545 (328 HP @ 6100 RPM) has 67 more horse power than 2009 BMW Z4. (261 HP @ 6600 RPM) In normal driving conditions, 2003 BMW 545 should accelerate faster than 2009 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 545 weights approximately 275 kg more than 2009 BMW Z4. 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, 2003 BMW 545 (451 Nm @ 3600 RPM) has 136 more torque (in Nm) than 2009 BMW Z4. (315 Nm @ 2750 RPM). This means 2003 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4. 2003 BMW 545 has automatic transmission and 2009 BMW Z4 has manual transmission. 2009 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 545 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW Z4 | 2003 BMW 545 | |
| Make | BMW | BMW |
| Model | Z4 | 545 |
| Year Released | 2009 | 2003 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 261 HP | 328 HP |
| Engine RPM | 6600 RPM | 6100 RPM |
| Torque | 315 Nm | 451 Nm |
| Torque RPM | 2750 RPM | 3600 RPM |
| Engine Bore Size | 85.1 mm | 92 mm |
| Engine Stroke Size | 88 mm | 82.7 mm |
| Acceleration 0-100mph | 5.7 seconds | 5.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1395 kg | 1670 kg |
| Vehicle Length | 4100 mm | 4850 mm |
| Vehicle Width | 1790 mm | 1850 mm |
| Vehicle Height | 1270 mm | 1470 mm |
| Wheelbase Size | 2500 mm | 2890 mm |
| Fuel Consumption Overall | 8.9 L/100km | 10.6 L/100km |
| Fuel Tank Capacity | 55 L | 70 L |
