2005 BMW Z4 vs. 2002 BMW 320
To start off, 2005 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2002 BMW 320. In addition, the cost of maintenance, including insurance, on 2002 BMW 320 would be higher. At 2,489 cc (6 cylinders), 2005 BMW Z4 is equipped with a bigger engine. In terms of performance, 2005 BMW Z4 (184 HP @ 6100 RPM) has 42 more horse power than 2002 BMW 320. (142 HP @ 6000 RPM). In normal driving conditions, 2005 BMW Z4 should accelerate faster than 2002 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW Z4 weights approximately 95 kg more than 2002 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, 2005 BMW Z4 (237 Nm @ 3500 RPM) has 27 more torque (in Nm) than 2002 BMW 320. (210 Nm @ 3750 RPM). This means 2005 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2002 BMW 320.
Compare all specifications:
| 2005 BMW Z4 | 2002 BMW 320 | |
| Make | BMW | BMW |
| Model | Z4 | 320 |
| Year Released | 2005 | 2002 |
| Engine Position | Front | Front |
| Engine Size | 2489 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 184 HP | 142 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 237 Nm | 210 Nm |
| Torque RPM | 3500 RPM | 3750 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 75 mm | 90 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1395 kg | 1300 kg |
| Vehicle Length | 4100 mm | 4270 mm |
| Vehicle Width | 1790 mm | 1760 mm |
| Vehicle Height | 1310 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2740 mm |
| Fuel Tank Capacity | 55 L | 63 L |
