2004 Chevrolet Impala vs. 2008 GMC Sierra
To start off, 2008 GMC Sierra is newer by 4 year(s). Which means there will be less support and parts availability for 2004 Chevrolet Impala. In addition, the cost of maintenance, including insurance, on 2004 Chevrolet Impala would be higher. At 6,000 cc (8 cylinders), 2008 GMC Sierra is equipped with a bigger engine. In terms of performance, 2008 GMC Sierra (353 HP @ 5400 RPM) has 153 more horse power than 2004 Chevrolet Impala. (200 HP @ 5600 RPM) In normal driving conditions, 2008 GMC Sierra should accelerate faster than 2004 Chevrolet Impala. With that said, vehicle weight also plays an important factor in acceleration. 2008 GMC Sierra weights approximately 1119 kg more than 2004 Chevrolet Impala. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2004 Chevrolet Impala. In wet, icy, snow, or gravel driving conditions, 2008 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, 2008 GMC Sierra (506 Nm) has 201 more torque (in Nm) than 2004 Chevrolet Impala. (305 Nm). This means 2008 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2004 Chevrolet Impala.
Compare all specifications:
| 2004 Chevrolet Impala | 2008 GMC Sierra | |
| Make | Chevrolet | GMC |
| Model | Impala | Sierra |
| Year Released | 2004 | 2008 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 3786 cc | 6000 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 200 HP | 353 HP |
| Engine RPM | 5600 RPM | 5400 RPM |
| Torque | 305 Nm | 506 Nm |
| Engine Compression Ratio | 9.4:1 | 9.6:1 |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 3 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1540 kg | 2659 kg |
| Vehicle Length | 5090 mm | 5720 mm |
| Vehicle Width | 1860 mm | 2440 mm |
| Vehicle Height | 1460 mm | 1960 mm |
| Wheelbase Size | 2880 mm | 3380 mm |
| Fuel Consumption Overall | 9.8 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 64 L | 129 L |
