2004 Alfa Romeo Spider vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 2004 Alfa Romeo Spider would be higher. At 3,246 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (338 HP @ 7900 RPM) has 101 more horse power than 2004 Alfa Romeo Spider. (237 HP @ 6200 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2004 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2004 Alfa Romeo Spider weights approximately 9 kg more than 2006 BMW Z4.
Because 2006 BMW Z4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2006 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2004 Alfa Romeo Spider, being front wheel drive (FWD), will offer much better control with better grip. 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, 2006 BMW Z4 (365 Nm @ 4900 RPM) has 65 more torque (in Nm) than 2004 Alfa Romeo Spider. (300 Nm @ 4800 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Alfa Romeo Spider.
Compare all specifications:
| 2004 Alfa Romeo Spider | 2006 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | Spider | Z4 |
| Year Released | 2004 | 2006 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3179 cc | 3246 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 338 HP |
| Engine RPM | 6200 RPM | 7900 RPM |
| Torque | 300 Nm | 365 Nm |
| Torque RPM | 4800 RPM | 4900 RPM |
| Engine Compression Ratio | 10.0:1 | 11.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 242 km/hour | 245 km/hour |
| Acceleration 0-100mph | 6.3 seconds | 5 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1494 kg | 1485 kg |
| Vehicle Length | 4310 mm | 4120 mm |
| Vehicle Width | 1780 mm | 1790 mm |
| Vehicle Height | 1330 mm | 1310 mm |
| Wheelbase Size | 2600 mm | 2500 mm |
| Fuel Consumption Overall | 13.2 L/100km | 12.1 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
