2004 Alfa Romeo 156 vs. 2007 BMW 550
To start off, 2007 BMW 550 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2004 Alfa Romeo 156 would be higher. At 2,497 cc (8 cylinders), 2007 BMW 550 is equipped with a bigger engine. In terms of performance, 2007 BMW 550 (362 HP @ 6300 RPM) has 214 more horse power than 2004 Alfa Romeo 156. (148 HP @ 4000 RPM) In normal driving conditions, 2007 BMW 550 should accelerate faster than 2004 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 550 weights approximately 75 kg more than 2004 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Alfa Romeo 156 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 550. In wet, icy, snow, or gravel driving conditions, 2004 Alfa Romeo 156 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 550 (491 Nm @ 3400 RPM) has 191 more torque (in Nm) than 2004 Alfa Romeo 156. (300 Nm @ 2000 RPM). This means 2007 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2004 Alfa Romeo 156.
Compare all specifications:
| 2004 Alfa Romeo 156 | 2007 BMW 550 | |
| Make | Alfa Romeo | BMW |
| Model | 156 | 550 |
| Year Released | 2004 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 2497 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 362 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 300 Nm | 491 Nm |
| Torque RPM | 2000 RPM | 3400 RPM |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 10.5 seconds | 5.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1585 kg | 1660 kg |
| Vehicle Length | 4450 mm | 4850 mm |
| Vehicle Width | 1770 mm | 1490 mm |
| Vehicle Height | 1480 mm | 1850 mm |
| Wheelbase Size | 2600 mm | 2890 mm |
| Fuel Consumption Overall | 7.1 L/100km | 11.1 L/100km |
| Fuel Tank Capacity | 50 L | 70 L |
