2005 Audi A8 vs. 2009 Lexus IS
To start off, 2009 Lexus IS is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 would be higher. At 3,454 cc (6 cylinders), 2009 Lexus IS is equipped with a bigger engine. In terms of performance, 2009 Lexus IS (306 HP @ 6400 RPM) has 76 more horse power than 2005 Audi A8. (230 HP @ 4000 RPM) In normal driving conditions, 2009 Lexus IS should accelerate faster than 2005 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 90 kg more than 2009 Lexus IS.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Lexus IS. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Audi A8 (450 Nm @ 1400 RPM) has 74 more torque (in Nm) than 2009 Lexus IS. (376 Nm @ 4800 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Lexus IS.
Compare all specifications:
| 2005 Audi A8 | 2009 Lexus IS | |
| Make | Audi | Lexus |
| Model | A8 | IS |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2966 cc | 3454 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 230 HP | 306 HP |
| Engine RPM | 4000 RPM | 6400 RPM |
| Torque | 450 Nm | 376 Nm |
| Torque RPM | 1400 RPM | 4800 RPM |
| Engine Bore Size | 83 mm | 94 mm |
| Engine Stroke Size | 91.4 mm | 83 mm |
| Engine Compression Ratio | 17.0:1 | 11.8:1 |
| Fuel Type | Diesel | Gasoline |
| 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 | 1740 kg |
| Vehicle Length | 5060 mm | 4590 mm |
| Vehicle Width | 1900 mm | 1810 mm |
| Vehicle Height | 1450 mm | 1430 mm |
| Wheelbase Size | 2950 mm | 2740 mm |
| Fuel Consumption Overall | 8.4 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 90 L | 65 L |
