2005 Alfa Romeo 159 vs. 2007 BMW Z4
To start off, 2007 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Alfa Romeo 159. In addition, the cost of maintenance, including insurance, on 2005 Alfa Romeo 159 would be higher. At 3,246 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (338 HP @ 7900 RPM) has 91 more horse power than 2005 Alfa Romeo 159. (247 HP @ 6200 RPM) In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2005 Alfa Romeo 159. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 159 weights approximately 255 kg more than 2007 BMW Z4.
Because 2005 Alfa Romeo 159 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2005 Alfa Romeo 159 will offer significantly more control. 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, 2007 BMW Z4 (365 Nm @ 4900 RPM) has 43 more torque (in Nm) than 2005 Alfa Romeo 159. (322 Nm @ 4500 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo 159.
Compare all specifications:
| 2005 Alfa Romeo 159 | 2007 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | 159 | Z4 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3175 cc | 3246 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 338 HP |
| Engine RPM | 6200 RPM | 7900 RPM |
| Torque | 322 Nm | 365 Nm |
| Torque RPM | 4500 RPM | 4900 RPM |
| Engine Bore Size | 87.5 mm | 87 mm |
| Engine Stroke Size | 88 mm | 91 mm |
| Engine Compression Ratio | 11.3:1 | 11.5:1 |
| Top Speed | 240 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7 seconds | 5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1740 kg | 1485 kg |
| Vehicle Length | 4670 mm | 4120 mm |
| Vehicle Width | 1830 mm | 1790 mm |
| Vehicle Height | 1420 mm | 1310 mm |
| Wheelbase Size | 2710 mm | 2500 mm |
| Fuel Consumption Overall | 11.7 L/100km | 12.1 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
