2006 BMW 645 vs. 2002 Infiniti Q45
To start off, 2006 BMW 645 is newer by 4 year(s). Which means there will be less support and parts availability for 2002 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 2002 Infiniti Q45 would be higher. At 4,493 cc (8 cylinders), 2002 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 40 more horse power than 2002 Infiniti Q45. (288 HP @ 6000 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2002 Infiniti Q45. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 66 kg more than 2002 Infiniti Q45. 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 54 more torque (in Nm) than 2002 Infiniti Q45. (396 Nm @ 4000 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2002 Infiniti Q45. 2002 Infiniti Q45 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. 2002 Infiniti Q45 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW 645 | 2002 Infiniti Q45 | |
| Make | BMW | Infiniti |
| Model | 645 | Q45 |
| Year Released | 2006 | 2002 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 4493 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 328 HP | 288 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 450 Nm | 396 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Engine Bore Size | 92 mm | 93 mm |
| Engine Stroke Size | 83 mm | 82.8 mm |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1836 kg | 1770 kg |
| Vehicle Length | 4830 mm | 5080 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1380 mm | 1500 mm |
| Wheelbase Size | 2790 mm | 2880 mm |
| Fuel Tank Capacity | 70 L | 60 L |
