2005 BMW 325 vs. 2006 BMW 550
To start off, 2006 BMW 550 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW 325. In addition, the cost of maintenance, including insurance, on 2005 BMW 325 would be higher. At 4,801 cc (8 cylinders), 2006 BMW 550 is equipped with a bigger engine. In terms of performance, 2006 BMW 550 (360 HP @ 6300 RPM) has 179 more horse power than 2005 BMW 325. (181 HP @ 7400 RPM) In normal driving conditions, 2006 BMW 550 should accelerate faster than 2005 BMW 325.
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 550 (488 Nm) has 251 more torque (in Nm) than 2005 BMW 325. (237 Nm). This means 2006 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 325.
Compare all specifications:
| 2005 BMW 325 | 2006 BMW 550 | |
| Make | BMW | BMW |
| Model | 325 | 550 |
| Year Released | 2005 | 2006 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 4801 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 181 HP | 360 HP |
| Engine RPM | 7400 RPM | 6300 RPM |
| Torque | 237 Nm | 488 Nm |
| Engine Bore Size | 84 mm | 93 mm |
| Engine Stroke Size | 75 mm | 88.3 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4490 mm | 4860 mm |
| Vehicle Width | 1760 mm | 1850 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2890 mm |
| Fuel Consumption | 8 L/100km | 10.2 L/100km |
| Fuel Consumption City | 11.9 L/100km | 14.7 L/100km |
| Fuel Consumption Overall | 10.4 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
