2003 BMW 645 vs. 2004 Infiniti FX
To start off, 2004 Infiniti FX is newer by 1 year(s). Which means there will be less support and parts availability for 2003 BMW 645. In addition, the cost of maintenance, including insurance, on 2003 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (310 HP) has 30 more horse power than 2004 Infiniti FX. (280 HP). In normal driving conditions, 2003 BMW 645 should accelerate faster than 2004 Infiniti FX. With that said, vehicle weight also plays an important factor in acceleration. 2004 Infiniti FX weights approximately 142 kg more than 2003 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, 2003 BMW 645 (450 Nm) has 84 more torque (in Nm) than 2004 Infiniti FX. (366 Nm). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2004 Infiniti FX.
Compare all specifications:
| 2003 BMW 645 | 2004 Infiniti FX | |
| Make | BMW | Infiniti |
| Model | 645 | FX |
| Year Released | 2003 | 2004 |
| Body Type | Coupe | Crossover |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 3491 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 310 HP | 280 HP |
| Torque | 450 Nm | 366 Nm |
| Engine Compression Ratio | 10.5:1 | 10.3:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1698 kg | 1840 kg |
| Vehicle Length | 4830 mm | 4810 mm |
| Vehicle Width | 1860 mm | 1930 mm |
| Vehicle Height | 1380 mm | 1660 mm |
| Wheelbase Size | 2790 mm | 2860 mm |
| Fuel Consumption | 8 L/100km | 10.2 L/100km |
| Fuel Consumption City | 16.1 L/100km | 13.8 L/100km |
| Fuel Consumption Overall | 10.9 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
