2003 Infiniti Q45 vs. 2004 BMW 320
To start off, 2004 BMW 320 is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 2003 Infiniti Q45 would be higher. At 4,494 cc (8 cylinders), 2003 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2003 Infiniti Q45 (340 HP @ 6400 RPM) has 192 more horse power than 2004 BMW 320. (148 HP @ 4000 RPM). In normal driving conditions, 2003 Infiniti Q45 should accelerate faster than 2004 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti Q45 weights approximately 124 kg more than 2004 BMW 320. 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, 2003 Infiniti Q45 (451 Nm @ 4000 RPM) has 101 more torque (in Nm) than 2004 BMW 320. (350 Nm @ 2000 RPM). This means 2003 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 320.
Compare all specifications:
| 2003 Infiniti Q45 | 2004 BMW 320 | |
| Make | Infiniti | BMW |
| Model | Q45 | 320 |
| Year Released | 2003 | 2004 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4494 cc | 1993 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 340 HP | 148 HP |
| Engine RPM | 6400 RPM | 4000 RPM |
| Torque | 451 Nm | 350 Nm |
| Torque RPM | 4000 RPM | 2000 RPM |
| Engine Compression Ratio | 10.5:1 | 17.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1804 kg | 1680 kg |
| Vehicle Length | 5080 mm | 4490 mm |
| Vehicle Width | 1850 mm | 1760 mm |
| Vehicle Height | 1500 mm | 1380 mm |
| Wheelbase Size | 2880 mm | 2730 mm |
| Fuel Tank Capacity | 81 L | 63 L |
