2003 Alfa Romeo 156 vs. 2006 BMW 730
To start off, 2006 BMW 730 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 156 would be higher. At 2,991 cc (6 cylinders), 2006 BMW 730 is equipped with a bigger engine. In terms of performance, 2006 BMW 730 (228 HP @ 4000 RPM) has 90 more horse power than 2003 Alfa Romeo 156. (138 HP @ 6200 RPM) In normal driving conditions, 2006 BMW 730 should accelerate faster than 2003 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 730 weights approximately 635 kg more than 2003 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW 730 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 2006 BMW 730. However, in wet, icy, snow, or gravel driving conditions, 2003 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, 2006 BMW 730 (520 Nm @ 2000 RPM) has 356 more torque (in Nm) than 2003 Alfa Romeo 156. (164 Nm @ 3900 RPM). This means 2006 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 156.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2006 BMW 730 | |
| Make | Alfa Romeo | BMW |
| Model | 156 | 730 |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1774 cc | 2991 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 228 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 164 Nm | 520 Nm |
| Torque RPM | 3900 RPM | 2000 RPM |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 208 km/hour | 238 km/hour |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1340 kg | 1975 kg |
| Vehicle Length | 4440 mm | 5050 mm |
| Vehicle Width | 1750 mm | 1910 mm |
| Vehicle Height | 1400 mm | 1500 mm |
| Wheelbase Size | 2600 mm | 3000 mm |
| Fuel Consumption Overall | 8.5 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 63 L | 88 L |
