2007 BMW Z4 vs. 2003 Infiniti FX
To start off, 2007 BMW Z4 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Infiniti FX. In addition, the cost of maintenance, including insurance, on 2003 Infiniti FX would be higher. At 4,494 cc (8 cylinders), 2003 Infiniti FX is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (335 HP @ 7900 RPM) has 24 more horse power than 2003 Infiniti FX. (311 HP @ 6400 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2003 Infiniti FX. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti FX weights approximately 660 kg more than 2007 BMW Z4.
Because 2003 Infiniti FX is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2003 Infiniti FX will offer significantly more control. 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 FX (446 Nm @ 4000 RPM) has 131 more torque (in Nm) than 2007 BMW Z4. (315 Nm @ 2750 RPM). This means 2003 Infiniti FX will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4. 2003 Infiniti FX has automatic transmission and 2007 BMW Z4 has manual transmission. 2007 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Infiniti FX will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Z4 | 2003 Infiniti FX | |
| Make | BMW | Infiniti |
| Model | Z4 | FX |
| Year Released | 2007 | 2003 |
| Body Type | Convertible | Crossover |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 4494 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 335 HP | 311 HP |
| Engine RPM | 7900 RPM | 6400 RPM |
| Torque | 315 Nm | 446 Nm |
| Torque RPM | 2750 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1290 kg | 1950 kg |
| Vehicle Length | 4100 mm | 4810 mm |
| Vehicle Width | 1790 mm | 1930 mm |
| Vehicle Height | 1310 mm | 1660 mm |
| Wheelbase Size | 2500 mm | 2860 mm |
