2002 Infiniti G20 vs. 2005 Opel Vectra
To start off, 2005 Opel Vectra is newer by 3 year(s). Which means there will be less support and parts availability for 2002 Infiniti G20. In addition, the cost of maintenance, including insurance, on 2002 Infiniti G20 would be higher. At 1,998 cc (4 cylinders), 2002 Infiniti G20 is equipped with a bigger engine. In terms of performance, 2005 Opel Vectra (170 HP @ 5500 RPM) has 26 more horse power than 2002 Infiniti G20. (144 HP @ 6000 RPM) In normal driving conditions, 2005 Opel Vectra should accelerate faster than 2002 Infiniti G20. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Vectra weights approximately 127 kg more than 2002 Infiniti G20. 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, 2005 Opel Vectra (265 Nm @ 2500 RPM) has 80 more torque (in Nm) than 2002 Infiniti G20. (185 Nm @ 4800 RPM). This means 2005 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 2002 Infiniti G20. 2002 Infiniti G20 has automatic transmission and 2005 Opel Vectra has manual transmission. 2005 Opel Vectra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2002 Infiniti G20 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2002 Infiniti G20 | 2005 Opel Vectra | |
| Make | Infiniti | Opel |
| Model | G20 | Vectra |
| Year Released | 2002 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 1997 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 144 HP | 170 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 185 Nm | 265 Nm |
| Torque RPM | 4800 RPM | 2500 RPM |
| Engine Bore Size | 86 mm | 86 mm |
| Engine Stroke Size | 86 mm | 86 mm |
| Engine Compression Ratio | 9.5:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1343 kg | 1470 kg |
| Vehicle Length | 4520 mm | 4600 mm |
| Vehicle Width | 1700 mm | 1800 mm |
| Vehicle Height | 1410 mm | 1470 mm |
| Wheelbase Size | 2610 mm | 2720 mm |
| Fuel Tank Capacity | 60 L | 61 L |
