2002 Alfa Romeo 166 vs. 2004 Opel Vectra
To start off, 2004 Opel Vectra is newer by 2 year(s). Which means there will be less support and parts availability for 2002 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2002 Alfa Romeo 166 would be higher. At 3,178 cc (6 cylinders), 2002 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2002 Alfa Romeo 166 (237 HP @ 6200 RPM) has 62 more horse power than 2004 Opel Vectra. (175 HP @ 5500 RPM). In normal driving conditions, 2002 Alfa Romeo 166 should accelerate faster than 2004 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2002 Alfa Romeo 166 weights approximately 145 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, 2002 Alfa Romeo 166 (300 Nm @ 4800 RPM) has 35 more torque (in Nm) than 2004 Opel Vectra. (265 Nm @ 2500 RPM). This means 2002 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Vectra.
Compare all specifications:
| 2002 Alfa Romeo 166 | 2004 Opel Vectra | |
| Make | Alfa Romeo | Opel |
| Model | 166 | Vectra |
| Year Released | 2002 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 3178 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 175 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 300 Nm | 265 Nm |
| Torque RPM | 4800 RPM | 2500 RPM |
| Engine Bore Size | 93 mm | 86 mm |
| Engine Stroke Size | 78 mm | 86 mm |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 245 km/hour | 230 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1615 kg | 1470 kg |
| Vehicle Length | 4730 mm | 4600 mm |
| Vehicle Width | 1810 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2740 mm |
| Fuel Consumption Overall | 12.5 L/100km | 8.9 L/100km |
