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 2,996 cc (6 cylinders), 2009 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (335 HP @ 7900 RPM) has 217 more horse power than 2005 Alfa Romeo 156. (118 HP @ 6500 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 60 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 (315 Nm @ 2750 RPM) has 168 more torque (in Nm) than 2005 Alfa Romeo 156. (147 Nm @ 4500 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo 156. 2009 BMW Z4 has automatic transmission and 2005 Alfa Romeo 156 has manual transmission. 2005 Alfa Romeo 156 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW Z4 will be easier to drive especially in heavy traffic.
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 | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1598 cc | 2996 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 118 HP | 335 HP |
| Engine RPM | 6500 RPM | 7900 RPM |
| Torque | 147 Nm | 315 Nm |
| Torque RPM | 4500 RPM | 2750 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1250 kg | 1310 kg |
| Vehicle Length | 4450 mm | 4100 mm |
| Vehicle Width | 1750 mm | 1790 mm |
| Vehicle Height | 1440 mm | 1310 mm |
| Wheelbase Size | 2710 mm | 2500 mm |
| Fuel Consumption Overall | 8.6 L/100km | 9.7 L/100km |
| Fuel Tank Capacity | 63 L | 55 L |
