2009 Alfa Romeo Spider vs. 2006 BMW Z4
To start off, 2009 Alfa Romeo Spider is newer by 3 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 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 141 more horse power than 2009 Alfa Romeo Spider. (197 HP @ 4000 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2009 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2009 Alfa Romeo Spider weights approximately 245 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, 2009 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, 2009 Alfa Romeo Spider (400 Nm @ 2000 RPM) has 35 more torque (in Nm) than 2006 BMW Z4. (365 Nm @ 4900 RPM). This means 2009 Alfa Romeo Spider will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2009 Alfa Romeo Spider | 2006 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | Spider | Z4 |
| Year Released | 2009 | 2006 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2385 cc | 3246 cc |
| Engine Cylinders | 5 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 197 HP | 338 HP |
| Engine RPM | 4000 RPM | 7900 RPM |
| Torque | 400 Nm | 365 Nm |
| Torque RPM | 2000 RPM | 4900 RPM |
| Engine Compression Ratio | 17.0:1 | 11.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 225 km/hour | 245 km/hour |
| Acceleration 0-100mph | 8.5 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 | 1730 kg | 1485 kg |
| Vehicle Length | 4400 mm | 4120 mm |
| Vehicle Width | 1840 mm | 1790 mm |
| Vehicle Height | 1380 mm | 1310 mm |
| Wheelbase Size | 2530 mm | 2500 mm |
| Fuel Consumption Overall | 7.9 L/100km | 12.1 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
