2006 Alfa Romeo 166 vs. 2004 Opel Vectra
To start off, 2006 Alfa Romeo 166 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2004 Opel Vectra would be higher. At 2,386 cc (5 cylinders), 2006 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2006 Alfa Romeo 166 (148 HP @ 4000 RPM) has 25 more horse power than 2004 Opel Vectra. (123 HP @ 4000 RPM). In normal driving conditions, 2006 Alfa Romeo 166 should accelerate faster than 2004 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alfa Romeo 166 weights approximately 62 kg more than 2004 Opel Vectra. 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 Alfa Romeo 166 (305 Nm @ 1800 RPM) has 25 more torque (in Nm) than 2004 Opel Vectra. (280 Nm @ 1500 RPM). This means 2006 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Vectra.
Compare all specifications:
| 2006 Alfa Romeo 166 | 2004 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | 166 | Vectra |
| Year Released | 2006 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2386 cc | 2198 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 123 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 305 Nm | 280 Nm |
| Torque RPM | 1800 RPM | 1500 RPM |
| Engine Bore Size | 82 mm | 84 mm |
| Engine Stroke Size | 90.4 mm | 98 mm |
| Engine Compression Ratio | 18.4:1 | 18.5:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 210 km/hour | 206 km/hour |
| Acceleration 0-100mph | 9.9 seconds | 10.8 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1585 kg | 1523 kg |
| Vehicle Length | 4730 mm | 4830 mm |
| Vehicle Width | 1810 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2620 mm |
| Fuel Tank Capacity | 69 L | 61 L |
