2005 BMW Z4 vs. 2003 BMW 320
To start off, 2005 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 BMW 320. In addition, the cost of maintenance, including insurance, on 2003 BMW 320 would be higher. Both 2005 BMW Z4 and 2003 BMW 320 are equipped with a 1,995 cc engine. In terms of performance, 2003 BMW 320 (142 HP @ 6100 RPM) has 1 more horse power than 2005 BMW Z4. (141 HP @ 6200 RPM) In normal driving conditions, 2003 BMW 320 should accelerate faster than 2005 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW Z4 weights approximately 15 kg more than 2003 BMW 320.
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, both vehicles can yield 200 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 2005 BMW Z4 | 2003 BMW 320 | |
| Make | BMW | BMW |
| Model | Z4 | 320 |
| Year Released | 2005 | 2003 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 141 HP | 142 HP |
| Engine RPM | 6200 RPM | 6100 RPM |
| Torque | 200 Nm | 200 Nm |
| Torque RPM | 3600 RPM | 3750 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 90 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 Doors | 2 doors | 2 doors |
| Vehicle Weight | 1325 kg | 1310 kg |
| Vehicle Length | 4100 mm | 4480 mm |
| Vehicle Width | 1790 mm | 1770 mm |
| Vehicle Height | 1310 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2710 mm |
| Fuel Tank Capacity | 55 L | 67 L |
