2003 Alfa Romeo 166 vs. 2001 Daihatsu Sirion
To start off, 2003 Alfa Romeo 166 is newer by 2 year(s). Which means there will be less support and parts availability for 2001 Daihatsu Sirion. In addition, the cost of maintenance, including insurance, on 2001 Daihatsu Sirion would be higher. At 2,959 cc (6 cylinders), 2003 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 166 (217 HP @ 6300 RPM) has 145 more horse power than 2001 Daihatsu Sirion. (72 HP @ 5200 RPM). In normal driving conditions, 2003 Alfa Romeo 166 should accelerate faster than 2001 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 166 weights approximately 710 kg more than 2001 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, 2003 Alfa Romeo 166 (265 Nm @ 5000 RPM) has 164 more torque (in Nm) than 2001 Daihatsu Sirion. (101 Nm @ 3600 RPM). This means 2003 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2001 Daihatsu Sirion. 2003 Alfa Romeo 166 has automatic transmission and 2001 Daihatsu Sirion has manual transmission. 2001 Daihatsu Sirion will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Alfa Romeo 166 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2001 Daihatsu Sirion | |
| Make | Alfa Romeo | Daihatsu |
| Model | 166 | Sirion |
| Year Released | 2003 | 2001 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 1298 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 217 HP | 72 HP |
| Engine RPM | 6300 RPM | 5200 RPM |
| Torque | 265 Nm | 101 Nm |
| Torque RPM | 5000 RPM | 3600 RPM |
| Engine Bore Size | 93 mm | 72 mm |
| Engine Stroke Size | 72.6 mm | 79.7 mm |
| Engine Compression Ratio | 10.0:1 | 11.0:1 |
| Top Speed | 236 km/hour | 179 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1550 kg | 840 kg |
| Vehicle Length | 4730 mm | 3680 mm |
| Vehicle Width | 1810 mm | 1600 mm |
| Vehicle Height | 1420 mm | 1460 mm |
| Wheelbase Size | 2600 mm | 2370 mm |
| Fuel Tank Capacity | 69 L | 37 L |
