2006 BMW 745 vs. 2006 BMW 645
To start off, both 2006 BMW 745 and 2006 BMW 645 were released in the same year (2006). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,423 cc (8 cylinders), 2006 BMW 745 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 3 more horse power than 2006 BMW 745. (325 HP @ 3800 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 2006 BMW 745. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 745 weights approximately 279 kg more than 2006 BMW 645.
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 745 (700 Nm @ 1900 RPM) has 250 more torque (in Nm) than 2006 BMW 645. (450 Nm @ 3600 RPM). This means 2006 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 645. 2006 BMW 745 has automatic transmission and 2006 BMW 645 has manual transmission. 2006 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 BMW 745 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW 745 | 2006 BMW 645 | |
| Make | BMW | BMW |
| Model | 745 | 645 |
| Year Released | 2006 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4423 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 325 HP | 328 HP |
| Engine RPM | 3800 RPM | 6100 RPM |
| Torque | 700 Nm | 450 Nm |
| Torque RPM | 1900 RPM | 3600 RPM |
| Engine Compression Ratio | 17.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 245 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.6 seconds | 6.1 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2115 kg | 1836 kg |
| Vehicle Length | 5050 mm | 4830 mm |
| Vehicle Width | 1910 mm | 1860 mm |
| Vehicle Height | 1500 mm | 1380 mm |
| Wheelbase Size | 3000 mm | 2790 mm |
| Fuel Consumption Overall | 9.5 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 88 L | 70 L |
