2006 Infiniti Q45 vs. 2009 Lexus LS
To start off, 2009 Lexus LS is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 2006 Infiniti Q45 would be higher. At 4,605 cc (8 cylinders), 2009 Lexus LS is equipped with a bigger engine. In terms of performance, 2009 Lexus LS (358 HP @ 6400 RPM) has 18 more horse power than 2006 Infiniti Q45. (340 HP @ 6400 RPM) In normal driving conditions, 2009 Lexus LS should accelerate faster than 2006 Infiniti Q45. With that said, vehicle weight also plays an important factor in acceleration. 2009 Lexus LS weights approximately 420 kg more than 2006 Infiniti Q45. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Lexus LS is four wheel drive (4WD), it will have significant more traction and grip than 2006 Infiniti Q45. In wet, icy, snow, or gravel driving conditions, 2009 Lexus LS 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 Lexus LS (466 Nm @ 4100 RPM) has 14 more torque (in Nm) than 2006 Infiniti Q45. (452 Nm @ 4000 RPM). This means 2009 Lexus LS will have an easier job in driving up hills or pulling heavy equipment than 2006 Infiniti Q45.
Compare all specifications:
| 2006 Infiniti Q45 | 2009 Lexus LS | |
| Make | Infiniti | Lexus |
| Model | Q45 | LS |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4490 cc | 4605 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 340 HP | 358 HP |
| Engine RPM | 6400 RPM | 6400 RPM |
| Torque | 452 Nm | 466 Nm |
| Torque RPM | 4000 RPM | 4100 RPM |
| Engine Bore Size | 93 mm | 94 mm |
| Engine Stroke Size | 82.7 mm | 83 mm |
| Engine Compression Ratio | 9.5:1 | 11.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1320 kg | 1740 kg |
| Vehicle Length | 5110 mm | 5160 mm |
| Vehicle Width | 1850 mm | 1880 mm |
| Vehicle Height | 1500 mm | 1490 mm |
| Wheelbase Size | 2880 mm | 3100 mm |
| Fuel Consumption | 10 L/100km | 10.2 L/100km |
| Fuel Consumption City | 14 L/100km | 14.7 L/100km |
| Fuel Consumption Overall | 11.9 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 81 L | 84 L |
