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 3,175 cc (6 cylinders), 2005 Alfa Romeo 159 is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 159 (247 HP @ 6200 RPM) has 99 more horse power than 2007 BMW Z4. (148 HP @ 6200 RPM). In normal driving conditions, 2005 Alfa Romeo 159 should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 159 weights approximately 445 kg more than 2007 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2005 Alfa Romeo 159 (322 Nm @ 4500 RPM) has 122 more torque (in Nm) than 2007 BMW Z4. (200 Nm @ 3600 RPM). This means 2005 Alfa Romeo 159 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
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 | 1993 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 148 HP |
| Engine RPM | 6200 RPM | 6200 RPM |
| Torque | 322 Nm | 200 Nm |
| Torque RPM | 4500 RPM | 3600 RPM |
| Engine Bore Size | 87.5 mm | 84 mm |
| Engine Stroke Size | 88 mm | 90 mm |
| Engine Compression Ratio | 11.3:1 | 10.5:1 |
| Top Speed | 240 km/hour | 220 km/hour |
| Acceleration 0-100mph | 7 seconds | 8.2 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 | 1295 kg |
| Vehicle Length | 4670 mm | 4100 mm |
| Vehicle Width | 1830 mm | 1310 mm |
| Vehicle Height | 1420 mm | 1790 mm |
| Wheelbase Size | 2710 mm | 2500 mm |
| Fuel Consumption Overall | 11.7 L/100km | 7.5 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
