2003 Alfa Romeo 156 vs. 2009 Infiniti QX56
To start off, 2009 Infiniti QX56 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 156 would be higher. At 5,552 cc (8 cylinders), 2009 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2009 Infiniti QX56 (320 HP @ 5200 RPM) has 182 more horse power than 2003 Alfa Romeo 156. (138 HP @ 6500 RPM) In normal driving conditions, 2009 Infiniti QX56 should accelerate faster than 2003 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2009 Infiniti QX56 weights approximately 5 kg more than 2003 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Infiniti QX56 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Alfa Romeo 156. In wet, icy, snow, or gravel driving conditions, 2009 Infiniti QX56 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 Infiniti QX56 (533 Nm @ 3400 RPM) has 370 more torque (in Nm) than 2003 Alfa Romeo 156. (163 Nm @ 3900 RPM). This means 2009 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 156. 2009 Infiniti QX56 has automatic transmission and 2003 Alfa Romeo 156 has manual transmission. 2003 Alfa Romeo 156 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Infiniti QX56 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2009 Infiniti QX56 | |
| Make | Alfa Romeo | Infiniti |
| Model | 156 | QX56 |
| Year Released | 2003 | 2009 |
| Body Type | Station Wagon | SUV |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 5552 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 138 HP | 320 HP |
| Engine RPM | 6500 RPM | 5200 RPM |
| Torque | 163 Nm | 533 Nm |
| Torque RPM | 3900 RPM | 3400 RPM |
| Engine Compression Ratio | 10.3:1 | 10.3:1 |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1315 kg | 1320 kg |
| Vehicle Length | 4450 mm | 5260 mm |
| Vehicle Width | 1750 mm | 2010 mm |
| Vehicle Height | 1440 mm | 2010 mm |
| Wheelbase Size | 2600 mm | 3140 mm |
| Fuel Consumption | 6.5 L/100km | 13.8 L/100km |
| Fuel Consumption City | 12.2 L/100km | 19.6 L/100km |
| Fuel Consumption Overall | 8.6 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 63 L | 106 L |
