2003 BMW 520 vs. 2007 BMW 320
To start off, 2007 BMW 320 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 BMW 520. In addition, the cost of maintenance, including insurance, on 2003 BMW 520 would be higher. At 2,170 cc (6 cylinders), 2003 BMW 520 is equipped with a bigger engine. In terms of performance, 2003 BMW 520 (167 HP @ 6100 RPM) has 13 more horse power than 2007 BMW 320. (154 HP @ 4000 RPM). In normal driving conditions, 2003 BMW 520 should accelerate faster than 2007 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 520 weights approximately 165 kg more than 2007 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, 2007 BMW 320 (331 Nm @ 2000 RPM) has 121 more torque (in Nm) than 2003 BMW 520. (210 Nm @ 3500 RPM). This means 2007 BMW 320 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 520. 2007 BMW 320 has automatic transmission and 2003 BMW 520 has manual transmission. 2003 BMW 520 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW 320 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW 520 | 2007 BMW 320 | |
| Make | BMW | BMW |
| Model | 520 | 320 |
| Year Released | 2003 | 2007 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2170 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 167 HP | 154 HP |
| Engine RPM | 6100 RPM | 4000 RPM |
| Torque | 210 Nm | 331 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Bore Size | 80 mm | 84 mm |
| Engine Stroke Size | 72 mm | 90 mm |
| Top Speed | 223 km/hour | 216 km/hour |
| Acceleration 0-100mph | 9.5 seconds | 8.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1670 kg | 1505 kg |
| Vehicle Length | 4810 mm | 4530 mm |
| Vehicle Width | 1810 mm | 1430 mm |
| Vehicle Height | 1450 mm | 1820 mm |
| Wheelbase Size | 2890 mm | 2770 mm |
| Fuel Consumption Overall | 9.5 L/100km | 6.7 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
