2002 Alfa Romeo 156 vs. 2006 GMC Sierra
To start off, 2006 GMC Sierra is newer by 4 year(s). Which means there will be less support and parts availability for 2002 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2002 Alfa Romeo 156 would be higher. At 5,996 cc (8 cylinders), 2006 GMC Sierra is equipped with a bigger engine. In terms of performance, 2006 GMC Sierra (345 HP @ 5200 RPM) has 197 more horse power than 2002 Alfa Romeo 156. (148 HP @ 4000 RPM) In normal driving conditions, 2006 GMC Sierra should accelerate faster than 2002 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Sierra weights approximately 1043 kg more than 2002 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2002 Alfa Romeo 156. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 GMC Sierra (515 Nm @ 4000 RPM) has 210 more torque (in Nm) than 2002 Alfa Romeo 156. (305 Nm @ 1800 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2002 Alfa Romeo 156.
Compare all specifications:
| 2002 Alfa Romeo 156 | 2006 GMC Sierra | |
| Make | Alfa Romeo | GMC |
| Model | 156 | Sierra |
| Year Released | 2002 | 2006 |
| Body Type | Station Wagon | Pickup |
| Engine Position | Front | Front |
| Engine Size | 2385 cc | 5996 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 148 HP | 345 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 305 Nm | 515 Nm |
| Torque RPM | 1800 RPM | 4000 RPM |
| Engine Bore Size | 82 mm | 102 mm |
| Engine Stroke Size | 90.4 mm | 92 mm |
| Engine Compression Ratio | 18.5:1 | 9.2:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1435 kg | 2478 kg |
| Vehicle Length | 4440 mm | 5850 mm |
| Vehicle Width | 1750 mm | 2000 mm |
| Vehicle Height | 1440 mm | 1910 mm |
| Wheelbase Size | 2600 mm | 3650 mm |
| Fuel Tank Capacity | 63 L | 98 L |
