2009 Audi A8 vs. 2007 Pontiac Grand Prix
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Pontiac Grand Prix. In addition, the cost of maintenance, including insurance, on 2007 Pontiac Grand Prix would be higher. At 3,786 cc (6 cylinders), 2007 Pontiac Grand Prix is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (229 HP) has 29 more horse power than 2007 Pontiac Grand Prix. (200 HP). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2007 Pontiac Grand Prix. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 474 kg more than 2007 Pontiac Grand Prix. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Pontiac Grand Prix. In wet, icy, snow, or gravel driving conditions, 2009 Audi A8 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, 2009 Audi A8 (450 Nm @ 1400 RPM) has 138 more torque (in Nm) than 2007 Pontiac Grand Prix. (312 Nm @ 4000 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Pontiac Grand Prix.
Compare all specifications:
| 2009 Audi A8 | 2007 Pontiac Grand Prix | |
| Make | Audi | Pontiac |
| Model | A8 | Grand Prix |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2966 cc | 3786 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 229 HP | 200 HP |
| Torque | 450 Nm | 312 Nm |
| Torque RPM | 1400 RPM | 4000 RPM |
| Engine Bore Size | 83 mm | 97 mm |
| Engine Stroke Size | 91.4 mm | 86 mm |
| Engine Compression Ratio | 17.0:1 | 9.4:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1830 kg | 1356 kg |
| Vehicle Height | 1900 mm | 1430 mm |
| Wheelbase Size | 2950 mm | 2810 mm |
| Fuel Consumption Overall | 8.4 L/100km | 9.8 L/100km |
| Fuel Tank Capacity | 90 L | 64 L |
