2008 Audi A8 vs. 2006 GMC Sierra
To start off, 2008 Audi A8 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 5,965 cc (8 cylinders), 2006 GMC Sierra is equipped with a bigger engine. In terms of performance, 2008 Audi A8 (330 HP @ 6500 RPM) has 29 more horse power than 2006 GMC Sierra. (301 HP @ 4400 RPM). In normal driving conditions, 2008 Audi A8 should accelerate faster than 2006 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Sierra weights approximately 525 kg more than 2008 Audi A8.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 (488 Nm @ 4000 RPM) has 57 more torque (in Nm) than 2008 Audi A8. (431 Nm @ 3500 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A8.
Compare all specifications:
| 2008 Audi A8 | 2006 GMC Sierra | |
| Make | Audi | GMC |
| Model | A8 | Sierra |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 5965 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 330 HP | 301 HP |
| Engine RPM | 6500 RPM | 4400 RPM |
| Torque | 431 Nm | 488 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Drive Type | 4WD | 4WD |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1910 kg | 2435 kg |
| Vehicle Length | 5190 mm | 6570 mm |
| Vehicle Width | 1900 mm | 2030 mm |
| Vehicle Height | 1460 mm | 1960 mm |
| Wheelbase Size | 3080 mm | 4250 mm |
| Fuel Consumption Overall | 11.9 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 90 L | 129 L |
