2007 BMW 330 vs. 2003 BMW 525
To start off, 2007 BMW 330 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 BMW 525. In addition, the cost of maintenance, including insurance, on 2003 BMW 525 would be higher. At 2,996 cc (6 cylinders), 2007 BMW 330 is equipped with a bigger engine. In terms of performance, 2007 BMW 330 (215 HP @ 4000 RPM) has 31 more horse power than 2003 BMW 525. (184 HP @ 6000 RPM). In normal driving conditions, 2007 BMW 330 should accelerate faster than 2003 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 525 weights approximately 25 kg more than 2007 BMW 330.
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, 2007 BMW 330 (480 Nm @ 1750 RPM) has 235 more torque (in Nm) than 2003 BMW 525. (245 Nm @ 3500 RPM). This means 2007 BMW 330 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 525.
Compare all specifications:
| 2007 BMW 330 | 2003 BMW 525 | |
| Make | BMW | BMW |
| Model | 330 | 525 |
| Year Released | 2007 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 2492 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 184 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 480 Nm | 245 Nm |
| Torque RPM | 1750 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 90 mm | 75 mm |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1540 kg | 1565 kg |
| Vehicle Length | 4530 mm | 4850 mm |
| Vehicle Width | 1430 mm | 1850 mm |
| Vehicle Height | 1820 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2890 mm |
| Fuel Consumption Overall | 6.5 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 60 L | 70 L |
