2003 BMW 545 vs. 2006 BMW 320
To start off, 2006 BMW 320 is newer by 3 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 180 more horse power than 2006 BMW 320. (148 HP @ 4000 RPM). In normal driving conditions, 2003 BMW 545 should accelerate faster than 2006 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 545 weights approximately 90 kg more than 2006 BMW 320. 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 121 more torque (in Nm) than 2006 BMW 320. (330 Nm @ 2000 RPM). This means 2003 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 320.
Compare all specifications:
| 2003 BMW 545 | 2006 BMW 320 | |
| Make | BMW | BMW |
| Model | 545 | 320 |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1994 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 148 HP |
| Engine RPM | 6100 RPM | 4000 RPM |
| Torque | 451 Nm | 330 Nm |
| Torque RPM | 3600 RPM | 2000 RPM |
| Engine Bore Size | 92 mm | 84 mm |
| Engine Stroke Size | 82.7 mm | 90 mm |
| Top Speed | 250 km/hour | 216 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 9.2 seconds |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1670 kg | 1580 kg |
| Vehicle Length | 4850 mm | 4480 mm |
| Vehicle Width | 1850 mm | 1750 mm |
| Vehicle Height | 1470 mm | 1420 mm |
| Wheelbase Size | 2890 mm | 2730 mm |
| Fuel Consumption Overall | 10.6 L/100km | 6 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
