2005 Audi RS6 vs. 2008 Lexus IS
To start off, 2008 Lexus IS is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Audi RS6. In addition, the cost of maintenance, including insurance, on 2005 Audi RS6 would be higher. At 4,172 cc (8 cylinders), 2005 Audi RS6 is equipped with a bigger engine. In terms of performance, 2005 Audi RS6 (444 HP @ 5700 RPM) has 138 more horse power than 2008 Lexus IS. (306 HP @ 6400 RPM). In normal driving conditions, 2005 Audi RS6 should accelerate faster than 2008 Lexus IS. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi RS6 weights approximately 125 kg more than 2008 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, 2005 Audi RS6 (580 Nm @ 1950 RPM) has 204 more torque (in Nm) than 2008 Lexus IS. (376 Nm @ 4800 RPM). This means 2005 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2008 Lexus IS.
Compare all specifications:
| 2005 Audi RS6 | 2008 Lexus IS | |
| Make | Audi | Lexus |
| Model | RS6 | IS |
| Year Released | 2005 | 2008 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 3456 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 444 HP | 306 HP |
| Engine RPM | 5700 RPM | 6400 RPM |
| Torque | 580 Nm | 376 Nm |
| Torque RPM | 1950 RPM | 4800 RPM |
| Engine Bore Size | 84.5 mm | 94 mm |
| Engine Stroke Size | 93 mm | 83 mm |
| Engine Compression Ratio | 9.0:1 | 11.8:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 228 km/hour |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1865 kg | 1740 kg |
| Vehicle Length | 4840 mm | 4580 mm |
| Vehicle Width | 1860 mm | 1810 mm |
| Vehicle Height | 1400 mm | 1430 mm |
| Wheelbase Size | 2760 mm | 2740 mm |
| Fuel Consumption Overall | 14.6 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 82 L | 65 L |
