2004 Alfa Romeo 156 vs. 2007 BMW Convertible
To start off, 2007 BMW Convertible 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 4,799 cc (8 cylinders), 2007 BMW Convertible is equipped with a bigger engine. In terms of performance, 2007 BMW Convertible (363 HP @ 6300 RPM) has 190 more horse power than 2004 Alfa Romeo 156. (173 HP @ 4000 RPM) In normal driving conditions, 2007 BMW Convertible should accelerate faster than 2004 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Convertible weights approximately 340 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.
Let's talk about torque, 2007 BMW Convertible (490 Nm @ 3600 RPM) has 105 more torque (in Nm) than 2004 Alfa Romeo 156. (385 Nm @ 2000 RPM). This means 2007 BMW Convertible 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 Convertible | |
| Make | Alfa Romeo | BMW |
| Model | 156 | Convertible |
| Year Released | 2004 | 2007 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 4799 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 363 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 385 Nm | 490 Nm |
| Torque RPM | 2000 RPM | 3600 RPM |
| Engine Compression Ratio | 18.5:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 220 km/hour | 250 km/hour |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1510 kg | 1850 kg |
| Vehicle Length | 4450 mm | 4830 mm |
| Vehicle Width | 1750 mm | 1380 mm |
| Vehicle Height | 1400 mm | 1860 mm |
| Wheelbase Size | 2550 mm | 2790 mm |
| Fuel Tank Capacity | 63 L | 70 L |
