2006 Audi A8 vs. 2009 Lexus IS
To start off, 2009 Lexus IS is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi A8. In addition, the cost of maintenance, including insurance, on 2006 Audi A8 would be higher. At 4,134 cc (8 cylinders), 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2006 Audi A8 (322 HP @ 3750 RPM) has 118 more horse power than 2009 Lexus IS. (204 HP @ 6400 RPM). In normal driving conditions, 2006 Audi A8 should accelerate faster than 2009 Lexus IS. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A8 weights approximately 180 kg more than 2009 Lexus IS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 Audi A8 (650 Nm @ 1600 RPM) has 399 more torque (in Nm) than 2009 Lexus IS. (251 Nm @ 4800 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Lexus IS.
Compare all specifications:
| 2006 Audi A8 | 2009 Lexus IS | |
| Make | Audi | Lexus |
| Model | A8 | IS |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4134 cc | 2499 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 204 HP |
| Engine RPM | 3750 RPM | 6400 RPM |
| Torque | 650 Nm | 251 Nm |
| Torque RPM | 1600 RPM | 4800 RPM |
| Engine Bore Size | 83 mm | 83 mm |
| Engine Stroke Size | 95.5 mm | 77 mm |
| Engine Compression Ratio | 16.5:1 | 12.0:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1945 kg | 1765 kg |
| Vehicle Length | 5070 mm | 4590 mm |
| Vehicle Width | 1900 mm | 1810 mm |
| Vehicle Height | 1450 mm | 1450 mm |
| Wheelbase Size | 2950 mm | 2740 mm |
| Fuel Consumption Overall | 9.6 L/100km | 10.7 L/100km |
| Fuel Tank Capacity | 90 L | 65 L |
