2006 BMW Z4 vs. 2004 Infiniti QX56
To start off, 2006 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Infiniti QX56. In addition, the cost of maintenance, including insurance, on 2004 Infiniti QX56 would be higher. At 5,556 cc (8 cylinders), 2004 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2004 Infiniti QX56 (315 HP) has 126 more horse power than 2006 BMW Z4. (189 HP) In normal driving conditions, 2004 Infiniti QX56 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2004 Infiniti QX56 weights approximately 1096 kg more than 2006 BMW Z4. 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, 2004 Infiniti QX56 (529 Nm) has 284 more torque (in Nm) than 2006 BMW Z4. (245 Nm). This means 2004 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 2004 Infiniti QX56 | |
| Make | BMW | Infiniti |
| Model | Z4 | QX56 |
| Year Released | 2006 | 2004 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 5556 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 315 HP |
| Torque | 245 Nm | 529 Nm |
| Engine Bore Size | 84 mm | 98 mm |
| Engine Stroke Size | 75 mm | 92 mm |
| Engine Compression Ratio | 11.0:1 | 9.8:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 7 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1335 kg | 2431 kg |
| Vehicle Length | 4100 mm | 5260 mm |
| Vehicle Width | 1790 mm | 2010 mm |
| Vehicle Height | 1310 mm | 1980 mm |
| Wheelbase Size | 2500 mm | 3140 mm |
| Fuel Consumption Overall | 9 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 55 L | 106 L |
