2008 Audi A6 vs. 2006 GMC Sierra
To start off, 2008 Audi A6 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 207 more horse power than 2008 Audi A6. (138 HP @ 4000 RPM) In normal driving conditions, 2006 GMC Sierra should accelerate faster than 2008 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Sierra weights approximately 1203 kg more than 2008 Audi A6. 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 2008 Audi A6. 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 195 more torque (in Nm) than 2008 Audi A6. (320 Nm @ 1750 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A6.
Compare all specifications:
| 2008 Audi A6 | 2006 GMC Sierra | |
| Make | Audi | GMC |
| Model | A6 | Sierra |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 1967 cc | 5996 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 138 HP | 345 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 320 Nm | 515 Nm |
| Torque RPM | 1750 RPM | 4000 RPM |
| Engine Bore Size | 81 mm | 102 mm |
| Engine Stroke Size | 95.5 mm | 92 mm |
| Engine Compression Ratio | 18.0:1 | 9.2:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1275 kg | 2478 kg |
| Vehicle Length | 4800 mm | 5850 mm |
| Vehicle Width | 1820 mm | 2000 mm |
| Vehicle Height | 1460 mm | 1910 mm |
| Wheelbase Size | 2770 mm | 3650 mm |
| Fuel Consumption Overall | 9.9 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 70 L | 98 L |
