2008 Chevrolet Impala vs. 2006 GMC Sierra
To start off, 2008 Chevrolet Impala is newer by 2 year(s). Which means there will be less support and parts availability for 2006 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2006 GMC Sierra 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 42 more horse power than 2008 Chevrolet Impala. (303 HP @ 5600 RPM) In normal driving conditions, 2006 GMC Sierra should accelerate faster than 2008 Chevrolet Impala.
Because 2006 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2008 Chevrolet Impala. 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 77 more torque (in Nm) than 2008 Chevrolet Impala. (438 Nm @ 4000 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2008 Chevrolet Impala.
Compare all specifications:
| 2008 Chevrolet Impala | 2006 GMC Sierra | |
| Make | Chevrolet | GMC |
| Model | Impala | Sierra |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 5670 cc | 5996 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 303 HP | 345 HP |
| Engine RPM | 5600 RPM | 5200 RPM |
| Torque | 438 Nm | 515 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5100 mm | 5850 mm |
| Vehicle Width | 1860 mm | 2000 mm |
| Vehicle Height | 1500 mm | 1910 mm |
| Wheelbase Size | 2810 mm | 3650 mm |
| Fuel Consumption | 9.8 L/100km | 13.8 L/100km |
| Fuel Consumption City | 14.7 L/100km | 18.1 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 64 L | 98 L |
