2005 Infiniti Q45 vs. 2011 Lexus IS
To start off, 2011 Lexus IS is newer by 6 year(s). Which means there will be less support and parts availability for 2005 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 2005 Infiniti Q45 would be higher. At 4,490 cc (8 cylinders), 2005 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2005 Infiniti Q45 (340 HP) has 136 more horse power than 2011 Lexus IS. (204 HP). In normal driving conditions, 2005 Infiniti Q45 should accelerate faster than 2011 Lexus IS. With that said, vehicle weight also plays an important factor in acceleration. 2005 Infiniti Q45 weights approximately 270 kg more than 2011 Lexus IS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 Lexus IS is all wheel drive (AWD), it will have significant more traction and grip than 2005 Infiniti Q45. In wet, icy, snow, or gravel driving conditions, 2011 Lexus IS 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 Infiniti Q45 (453 Nm) has 202 more torque (in Nm) than 2011 Lexus IS. (251 Nm). This means 2005 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2011 Lexus IS.
Compare all specifications:
| 2005 Infiniti Q45 | 2011 Lexus IS | |
| Make | Infiniti | Lexus |
| Model | Q45 | IS |
| Year Released | 2005 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4490 cc | 2500 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 340 HP | 204 HP |
| Torque | 453 Nm | 251 Nm |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | 6-speed automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1837 kg | 1567 kg |
| Vehicle Length | 5080 mm | 4585 mm |
| Vehicle Width | 1850 mm | 1801 mm |
| Vehicle Height | 1500 mm | 1440 mm |
| Wheelbase Size | 2880 mm | 2731 mm |
| Fuel Consumption Highway | 9.4 L/100km | 8.4 L/100km |
| Fuel Consumption City | 13.8 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 81 L | 65 L |
