2006 Alfa Romeo 156 vs. 2008 BMW Z4
To start off, 2008 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2006 Alfa Romeo 156 would be higher. At 2,497 cc (6 cylinders), 2008 BMW Z4 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alfa Romeo 156 weights approximately 255 kg more than 2008 BMW Z4.
Because 2008 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 2008 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2006 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, 2008 BMW Z4 (250 Nm @ 2750 RPM) has 69 more torque (in Nm) than 2006 Alfa Romeo 156. (181 Nm @ 3800 RPM). This means 2008 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2006 Alfa Romeo 156.
Compare all specifications:
| 2006 Alfa Romeo 156 | 2008 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | 156 | Z4 |
| Year Released | 2006 | 2008 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1970 cc | 2497 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 149 HP | 0 HP |
| Torque | 181 Nm | 250 Nm |
| Torque RPM | 3800 RPM | 2750 RPM |
| Engine Bore Size | 83 mm | 82 mm |
| Engine Stroke Size | 91 mm | 78.8 mm |
| Engine Compression Ratio | 10.0:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 214 km/hour | 240 km/hour |
| Acceleration 0-100mph | 8.8 seconds | 6.8 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1615 kg | 1360 kg |
| Vehicle Length | 4440 mm | 4100 mm |
| Vehicle Width | 1750 mm | 1310 mm |
| Vehicle Height | 1440 mm | 1790 mm |
| Wheelbase Size | 2600 mm | 2500 mm |
| Fuel Consumption Overall | 8.7 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 63 L | 55 L |
