2006 BMW 645 vs. 2006 BMW 318
To start off, both 2006 BMW 645 and 2006 BMW 318 were released in the same year (2006). Therefore the support and the availability on parts for both vehicles should be relatively similar. 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 215 more horse power than 2006 BMW 318. (113 HP @ 4000 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2006 BMW 318. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 137 kg more than 2006 BMW 318. 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 170 more torque (in Nm) than 2006 BMW 318. (280 Nm @ 1750 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 318.
Compare all specifications:
| 2006 BMW 645 | 2006 BMW 318 | |
| Make | BMW | BMW |
| Model | 645 | 318 |
| Year Released | 2006 | 2006 |
| Body Type | Coupe | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1995 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 113 HP |
| Engine RPM | 6100 RPM | 4000 RPM |
| Torque | 450 Nm | 280 Nm |
| Torque RPM | 3600 RPM | 1750 RPM |
| Engine Compression Ratio | 10.0:1 | 17.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 250 km/hour | 195 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 11 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1692 kg | 1555 kg |
| Vehicle Length | 4830 mm | 4480 mm |
| Vehicle Width | 1860 mm | 1750 mm |
| Vehicle Height | 1380 mm | 1420 mm |
| Wheelbase Size | 2790 mm | 2730 mm |
| Fuel Consumption Overall | 11.8 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 70 L | 63 L |
