2003 Alfa Romeo 166 vs. 2006 Opel Astra
To start off, 2006 Opel Astra is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 166 would be higher. At 2,492 cc (6 cylinders), 2003 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 166 (185 HP @ 6300 RPM) has 17 more horse power than 2006 Opel Astra. (168 HP @ 5200 RPM). In normal driving conditions, 2003 Alfa Romeo 166 should accelerate faster than 2006 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 166 weights approximately 50 kg more than 2006 Opel Astra. 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, 2006 Opel Astra (250 Nm @ 1950 RPM) has 29 more torque (in Nm) than 2003 Alfa Romeo 166. (221 Nm @ 5000 RPM). This means 2006 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 166.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2006 Opel Astra | |
| Make | Alfa Romeo | Opel |
| Model | 166 | Astra |
| Year Released | 2003 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 168 HP |
| Engine RPM | 6300 RPM | 5200 RPM |
| Torque | 221 Nm | 250 Nm |
| Torque RPM | 5000 RPM | 1950 RPM |
| Engine Compression Ratio | 10.3:1 | 8.8:1 |
| Top Speed | 220 km/hour | 217 km/hour |
| Acceleration 0-100mph | 8.4 seconds | 8.7 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1435 kg | 1385 kg |
| Vehicle Length | 4730 mm | 4260 mm |
| Vehicle Width | 1810 mm | 1760 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2620 mm |
| Fuel Consumption Overall | 11.9 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 69 L | 52 L |
