2006 Alfa Romeo 156 vs. 2005 Pontiac Grand Prix
To start off, 2006 Alfa Romeo 156 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Pontiac Grand Prix. In addition, the cost of maintenance, including insurance, on 2005 Pontiac Grand Prix would be higher. At 3,786 cc (6 cylinders), 2005 Pontiac Grand Prix is equipped with a bigger engine. In terms of performance, 2005 Pontiac Grand Prix (200 HP) has 11 more horse power than 2006 Alfa Romeo 156. (189 HP) In normal driving conditions, 2005 Pontiac Grand Prix should accelerate faster than 2006 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2005 Pontiac Grand Prix weights approximately 65 kg more than 2006 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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 Pontiac Grand Prix (312 Nm) has 94 more torque (in Nm) than 2006 Alfa Romeo 156. (218 Nm). This means 2005 Pontiac Grand Prix will have an easier job in driving up hills or pulling heavy equipment than 2006 Alfa Romeo 156.
Compare all specifications:
| 2006 Alfa Romeo 156 | 2005 Pontiac Grand Prix | |
| Make | Alfa Romeo | Pontiac |
| Model | 156 | Grand Prix |
| Year Released | 2006 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 3786 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 189 HP | 200 HP |
| Torque | 218 Nm | 312 Nm |
| Engine Bore Size | 88 mm | 97 mm |
| Engine Stroke Size | 68.3 mm | 86 mm |
| Engine Compression Ratio | 10.3:1 | 9.4:1 |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1585 kg | 1650 kg |
| Vehicle Length | 4440 mm | 5040 mm |
| Vehicle Width | 1750 mm | 1830 mm |
| Vehicle Height | 1440 mm | 1430 mm |
| Wheelbase Size | 2600 mm | 2720 mm |
| Fuel Consumption Overall | 11.8 L/100km | 10.4 L/100km |
| Fuel Tank Capacity | 63 L | 64 L |
