2004 Alfa Romeo 156 vs. 2007 Daihatsu Sirion
To start off, 2007 Daihatsu Sirion is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2004 Alfa Romeo 156 would be higher. At 2,387 cc (6 cylinders), 2004 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2004 Alfa Romeo 156 (189 HP @ 6300 RPM) has 88 more horse power than 2007 Daihatsu Sirion. (101 HP @ 3600 RPM). In normal driving conditions, 2004 Alfa Romeo 156 should accelerate faster than 2007 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2004 Alfa Romeo 156 weights approximately 490 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, 2004 Alfa Romeo 156 (218 Nm @ 5000 RPM) has 78 more torque (in Nm) than 2007 Daihatsu Sirion. (140 Nm @ 4600 RPM). This means 2004 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2007 Daihatsu Sirion.
Compare all specifications:
| 2004 Alfa Romeo 156 | 2007 Daihatsu Sirion | |
| Make | Alfa Romeo | Daihatsu |
| Model | 156 | Sirion |
| Year Released | 2004 | 2007 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 1298 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 101 HP |
| Engine RPM | 6300 RPM | 3600 RPM |
| Torque | 218 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 |
| Engine Compression Ratio | 10.3:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1430 kg | 940 kg |
| Vehicle Length | 4440 mm | 3610 mm |
| Vehicle Width | 1750 mm | 1560 mm |
| Vehicle Height | 1400 mm | 1670 mm |
| Wheelbase Size | 2550 mm | 2440 mm |
| Fuel Tank Capacity | 63 L | 40 L |
