2008 BMW 120 vs. 2006 BMW 645
To start off, 2008 BMW 120 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 180 more horse power than 2008 BMW 120. (148 HP @ 6200 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 2008 BMW 120. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 480 kg more than 2008 BMW 120. 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 250 more torque (in Nm) than 2008 BMW 120. (200 Nm @ 3600 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 120. 2006 BMW 645 has automatic transmission and 2008 BMW 120 has manual transmission. 2008 BMW 120 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW 120 | 2006 BMW 645 | |
| Make | BMW | BMW |
| Model | 120 | 645 |
| Year Released | 2008 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 328 HP |
| Engine RPM | 6200 RPM | 6100 RPM |
| Torque | 200 Nm | 450 Nm |
| Torque RPM | 3600 RPM | 3600 RPM |
| Engine Bore Size | 84 mm | 92 mm |
| Engine Stroke Size | 90 mm | 82.7 mm |
| Engine Compression Ratio | 10.2:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 213 km/hour | 250 km/hour |
| Acceleration 0-100mph | 10.9 seconds | 6.4 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1335 kg | 1815 kg |
| Vehicle Length | 4230 mm | 4830 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1440 mm | 1380 mm |
| Wheelbase Size | 2670 mm | 2790 mm |
| Fuel Consumption Overall | 7.6 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 50 L | 70 L |
