2005 Alfa Romeo 156 vs. 2007 Daihatsu Sirion
To start off, 2007 Daihatsu Sirion is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2005 Alfa Romeo 156 would be higher. At 2,492 cc (6 cylinders), 2005 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 156 (185 HP @ 5000 RPM) has 84 more horse power than 2007 Daihatsu Sirion. (101 HP @ 3600 RPM). In normal driving conditions, 2005 Alfa Romeo 156 should accelerate faster than 2007 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 156 weights approximately 550 kg more than 2007 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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 Alfa Romeo 156 (222 Nm @ 5000 RPM) has 82 more torque (in Nm) than 2007 Daihatsu Sirion. (140 Nm @ 4600 RPM). This means 2005 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2007 Daihatsu Sirion.
Compare all specifications:
| 2005 Alfa Romeo 156 | 2007 Daihatsu Sirion | |
| Make | Alfa Romeo | Daihatsu |
| Model | 156 | Sirion |
| Year Released | 2005 | 2007 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1298 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 101 HP |
| Engine RPM | 5000 RPM | 3600 RPM |
| Torque | 222 Nm | 140 Nm |
| Torque RPM | 5000 RPM | 4600 RPM |
| Engine Bore Size | 88 mm | 72 mm |
| Engine Stroke Size | 68.3 mm | 79.7 mm |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1490 kg | 940 kg |
| Vehicle Length | 4450 mm | 3610 mm |
| Vehicle Width | 1750 mm | 1560 mm |
| Vehicle Height | 1440 mm | 1670 mm |
| Wheelbase Size | 2710 mm | 2440 mm |
| Fuel Tank Capacity | 72 L | 40 L |
