2005 Alfa Romeo 156 vs. 2009 BMW Z4
To start off, 2009 BMW Z4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2005 Alfa Romeo 156 would be higher. At 3,244 cc (6 cylinders), 2009 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (338 HP @ 7900 RPM) has 153 more horse power than 2005 Alfa Romeo 156. (185 HP @ 5000 RPM) In normal driving conditions, 2009 BMW Z4 should accelerate faster than 2005 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW Z4 weights approximately 5 kg more than 2005 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 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 2009 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2005 Alfa Romeo 156, 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 BMW Z4 (365 Nm @ 4900 RPM) has 143 more torque (in Nm) than 2005 Alfa Romeo 156. (222 Nm @ 5000 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo 156.
Compare all specifications:
| 2005 Alfa Romeo 156 | 2009 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | 156 | Z4 |
| Year Released | 2005 | 2009 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 3244 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 338 HP |
| Engine RPM | 5000 RPM | 7900 RPM |
| Torque | 222 Nm | 365 Nm |
| Torque RPM | 5000 RPM | 4900 RPM |
| Engine Bore Size | 88 mm | 87 mm |
| Engine Stroke Size | 68.3 mm | 91 mm |
| Top Speed | 225 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.4 seconds | 5 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1490 kg | 1495 kg |
| Vehicle Length | 4450 mm | 4120 mm |
| Vehicle Width | 1750 mm | 1790 mm |
| Vehicle Height | 1440 mm | 1290 mm |
| Wheelbase Size | 2710 mm | 2500 mm |
| Fuel Consumption Overall | 11.8 L/100km | 12.1 L/100km |
| Fuel Tank Capacity | 72 L | 60 L |
