2009 Audi S8 vs. 2008 Chevrolet Impala
To start off, 2009 Audi S8 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Chevrolet Impala. In addition, the cost of maintenance, including insurance, on 2008 Chevrolet Impala would be higher. At 5,204 cc (10 cylinders), 2009 Audi S8 is equipped with a bigger engine. In terms of performance, 2009 Audi S8 (450 HP @ 7000 RPM) has 239 more horse power than 2008 Chevrolet Impala. (211 HP @ 5800 RPM). In normal driving conditions, 2009 Audi S8 should accelerate faster than 2008 Chevrolet Impala. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi S8 weights approximately 100 kg more than 2008 Chevrolet Impala. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 2008 Chevrolet Impala. In wet, icy, snow, or gravel driving conditions, 2009 Audi S8 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 S8 (540 Nm @ 3500 RPM) has 250 more torque (in Nm) than 2008 Chevrolet Impala. (290 Nm @ 4000 RPM). This means 2009 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Chevrolet Impala.
Compare all specifications:
| 2009 Audi S8 | 2008 Chevrolet Impala | |
| Make | Audi | Chevrolet |
| Model | S8 | Impala |
| Year Released | 2009 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 3505 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 450 HP | 211 HP |
| Engine RPM | 7000 RPM | 5800 RPM |
| Torque | 540 Nm | 290 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Compression Ratio | 12.5:1 | 9.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | AWD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1175 kg | 1075 kg |
| Vehicle Length | 5070 mm | 5100 mm |
| Vehicle Width | 1900 mm | 1860 mm |
| Vehicle Height | 1430 mm | 1500 mm |
| Wheelbase Size | 2950 mm | 2810 mm |
| Fuel Consumption Highway | 12.4 L/100km | 8.1 L/100km |
| Fuel Consumption City | 18.2 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 15.8 L/100km | 10.7 L/100km |
| Fuel Tank Capacity | 90 L | 64 L |
