2009 Audi A8 vs. 2007 GMC Sierra
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2007 GMC Sierra would be higher. At 5,999 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (444 HP @ 7000 RPM) has 144 more horse power than 2007 GMC Sierra. (300 HP @ 4400 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2007 GMC Sierra.
Let's talk about torque, 2009 Audi A8 (540 Nm @ 3500 RPM) has 52 more torque (in Nm) than 2007 GMC Sierra. (488 Nm @ 4000 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 GMC Sierra.
Compare all specifications:
| 2009 Audi A8 | 2007 GMC Sierra | |
| Make | Audi | GMC |
| Model | A8 | Sierra |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 5999 cc |
| Engine Cylinders | 10 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 444 HP | 300 HP |
| Engine RPM | 7000 RPM | 4400 RPM |
| Torque | 540 Nm | 488 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84.5 mm | 102 mm |
| Engine Stroke Size | 92.8 mm | 92 mm |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Length | 5070 mm | 6330 mm |
| Vehicle Width | 1900 mm | 2450 mm |
| Vehicle Height | 1430 mm | 1940 mm |
| Wheelbase Size | 2950 mm | 4010 mm |
| Fuel Tank Capacity | 90 L | 129 L |
