2005 Infiniti I vs. 2003 Opel Astra
To start off, 2005 Infiniti I is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Opel Astra. In addition, the cost of maintenance, including insurance, on 2003 Opel Astra would be higher. At 2,960 cc (6 cylinders), 2005 Infiniti I is equipped with a bigger engine. In terms of performance, 2005 Infiniti I (224 HP @ 5600 RPM) has 79 more horse power than 2003 Opel Astra. (145 HP @ 5800 RPM). In normal driving conditions, 2005 Infiniti I should accelerate faster than 2003 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Infiniti I weights approximately 212 kg more than 2003 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, 2005 Infiniti I (271 Nm @ 4800 RPM) has 68 more torque (in Nm) than 2003 Opel Astra. (203 Nm @ 4000 RPM). This means 2005 Infiniti I will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Astra. 2003 Opel Astra has automatic transmission and 2005 Infiniti I has manual transmission. 2005 Infiniti I will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Opel Astra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Infiniti I | 2003 Opel Astra | |
| Make | Infiniti | Opel |
| Model | I | Astra |
| Year Released | 2005 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2960 cc | 2198 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 224 HP | 145 HP |
| Engine RPM | 5600 RPM | 5800 RPM |
| Torque | 271 Nm | 203 Nm |
| Torque RPM | 4800 RPM | 4000 RPM |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Vehicle Weight | 1510 kg | 1298 kg |
| Vehicle Length | 4930 mm | 4120 mm |
| Vehicle Width | 1790 mm | 1720 mm |
| Vehicle Height | 1450 mm | 1430 mm |
| Wheelbase Size | 2760 mm | 2500 mm |
