2007 BMW Z4 vs. 2003 Infiniti Q45
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 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 151 more horse power than 2007 BMW Z4. (189 HP @ 6000 RPM) In normal driving conditions, 2003 Infiniti Q45 should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti Q45 weights approximately 544 kg more than 2007 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, 2003 Infiniti Q45 (451 Nm @ 4000 RPM) has 206 more torque (in Nm) than 2007 BMW Z4. (245 Nm @ 3500 RPM). This means 2003 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4. 2003 Infiniti Q45 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 Q45 will be easier to drive especially in heavy traffic.
Compare all specifications:
2007 BMW Z4 | 2003 Infiniti Q45 | |
Make | BMW | Infiniti |
Model | Z4 | Q45 |
Year Released | 2007 | 2003 |
Body Type | Convertible | Sedan |
Engine Position | Front | Front |
Engine Size | 2494 cc | 4494 cc |
Engine Cylinders | 6 cylinders | 8 cylinders |
Engine Type | in-line | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 189 HP | 340 HP |
Engine RPM | 6000 RPM | 6400 RPM |
Torque | 245 Nm | 451 Nm |
Torque RPM | 3500 RPM | 4000 RPM |
Drive Type | Rear | Rear |
Transmission Type | Manual | Automatic |
Number of Seats | 2 seats | 5 seats |
Number of Doors | 2 doors | 4 doors |
Vehicle Weight | 1260 kg | 1804 kg |
Vehicle Length | 4100 mm | 5080 mm |
Vehicle Width | 1790 mm | 1850 mm |
Vehicle Height | 1310 mm | 1500 mm |
Wheelbase Size | 2500 mm | 2880 mm |
Fuel Tank Capacity | 55 L | 81 L |