2003 BMW Z4 vs. 2000 Infiniti Q45
To start off, 2003 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2000 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 2000 Infiniti Q45 would be higher. At 4,130 cc (8 cylinders), 2000 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2000 Infiniti Q45 (265 HP @ 5600 RPM) has 38 more horse power than 2003 BMW Z4. (227 HP @ 6000 RPM) In normal driving conditions, 2000 Infiniti Q45 should accelerate faster than 2003 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2000 Infiniti Q45 weights approximately 470 kg more than 2003 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, 2000 Infiniti Q45 (378 Nm @ 4000 RPM) has 87 more torque (in Nm) than 2003 BMW Z4. (291 Nm @ 3500 RPM). This means 2000 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW Z4. 2000 Infiniti Q45 has automatic transmission and 2003 BMW Z4 has manual transmission. 2003 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2000 Infiniti Q45 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW Z4 | 2000 Infiniti Q45 | |
| Make | BMW | Infiniti |
| Model | Z4 | Q45 |
| Year Released | 2003 | 2000 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 4130 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 227 HP | 265 HP |
| Engine RPM | 6000 RPM | 5600 RPM |
| Torque | 291 Nm | 378 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 93 mm |
| Engine Stroke Size | 90 mm | 76 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1290 kg | 1760 kg |
| Vehicle Length | 4100 mm | 5070 mm |
| Vehicle Width | 1790 mm | 1830 mm |
| Vehicle Height | 1310 mm | 1450 mm |
| Wheelbase Size | 2500 mm | 2840 mm |
| Fuel Tank Capacity | 55 L | 60 L |
