2009 Alfa Romeo 159 vs. 2005 Infiniti Q45
To start off, 2009 Alfa Romeo 159 is newer by 4 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 132 more horse power than 2009 Alfa Romeo 159. (208 HP) In normal driving conditions, 2005 Infiniti Q45 should accelerate faster than 2009 Alfa Romeo 159. With that said, vehicle weight also plays an important factor in acceleration. 2005 Infiniti Q45 weights approximately 117 kg more than 2009 Alfa Romeo 159. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Infiniti Q45 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2005 Infiniti Q45. However, in wet, icy, snow, or gravel driving conditions, 2009 Alfa Romeo 159, being front wheel drive (FWD), will offer much better control with better grip. 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 53 more torque (in Nm) than 2009 Alfa Romeo 159. (400 Nm). This means 2005 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2009 Alfa Romeo 159. 2005 Infiniti Q45 has automatic transmission and 2009 Alfa Romeo 159 has manual transmission. 2009 Alfa Romeo 159 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Infiniti Q45 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Alfa Romeo 159 | 2005 Infiniti Q45 | |
| Make | Alfa Romeo | Infiniti |
| Model | 159 | Q45 |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 4490 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 208 HP | 340 HP |
| Torque | 400 Nm | 453 Nm |
| Engine Bore Size | 82 mm | 93 mm |
| Engine Stroke Size | 90.4 mm | 83 mm |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1720 kg | 1837 kg |
| Vehicle Length | 4670 mm | 5080 mm |
| Vehicle Width | 1840 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1500 mm |
| Wheelbase Size | 2710 mm | 2880 mm |
| Fuel Consumption Overall | 6.8 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 70 L | 81 L |
