2007 BMW 320 vs. 2005 BMW 645
To start off, 2007 BMW 320 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 BMW 645. In addition, the cost of maintenance, including insurance, on 2005 BMW 645 would be higher. At 4,390 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (338 HP @ 6100 RPM) has 184 more horse power than 2007 BMW 320. (154 HP @ 4000 RPM) In normal driving conditions, 2005 BMW 645 should accelerate faster than 2007 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 225 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, 2005 BMW 645 (439 Nm @ 3600 RPM) has 109 more torque (in Nm) than 2007 BMW 320. (330 Nm @ 2000 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 320. 2005 BMW 645 has automatic transmission and 2007 BMW 320 has manual transmission. 2007 BMW 320 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW 320 | 2005 BMW 645 | |
| Make | BMW | BMW |
| Model | 320 | 645 |
| Year Released | 2007 | 2005 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 4390 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 154 HP | 338 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 330 Nm | 439 Nm |
| Torque RPM | 2000 RPM | 3600 RPM |
| Engine Bore Size | 84 mm | 92 mm |
| Engine Stroke Size | 90 mm | 83 mm |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 221 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.9 seconds | 5.6 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1490 kg | 1715 kg |
| Vehicle Length | 4530 mm | 4830 mm |
| Vehicle Width | 1430 mm | 1860 mm |
| Vehicle Height | 1820 mm | 1380 mm |
| Wheelbase Size | 2770 mm | 2790 mm |
| Fuel Consumption Overall | 5.7 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 60 L | 70 L |
