2005 Alfa Romeo 156 vs. 2009 GMC Sierra
To start off, 2009 GMC Sierra 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 6,000 cc (8 cylinders), 2009 GMC Sierra is equipped with a bigger engine. In terms of performance, 2009 GMC Sierra (353 HP @ 5400 RPM) has 163 more horse power than 2005 Alfa Romeo 156. (190 HP @ 6300 RPM) In normal driving conditions, 2009 GMC Sierra should accelerate faster than 2005 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2009 GMC Sierra weights approximately 1189 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 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2005 Alfa Romeo 156. In wet, icy, snow, or gravel driving conditions, 2009 GMC Sierra 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, 2009 GMC Sierra (506 Nm @ 4400 RPM) has 288 more torque (in Nm) than 2005 Alfa Romeo 156. (218 Nm @ 5000 RPM). This means 2009 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo 156.
Compare all specifications:
| 2005 Alfa Romeo 156 | 2009 GMC Sierra | |
| Make | Alfa Romeo | GMC |
| Model | 156 | Sierra |
| Year Released | 2005 | 2009 |
| Body Type | Station Wagon | Pickup |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 6000 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 190 HP | 353 HP |
| Engine RPM | 6300 RPM | 5400 RPM |
| Torque | 218 Nm | 506 Nm |
| Torque RPM | 5000 RPM | 4400 RPM |
| Engine Compression Ratio | 10.3:1 | 9.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 3 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1470 kg | 2659 kg |
| Vehicle Length | 4450 mm | 5720 mm |
| Vehicle Width | 1750 mm | 2440 mm |
| Vehicle Height | 1400 mm | 1960 mm |
| Wheelbase Size | 2600 mm | 3380 mm |
| Fuel Consumption Overall | 11.9 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 63 L | 129 L |
