2003 Infiniti Q45 vs. 2003 Opel Vectra
To start off, both 2003 Infiniti Q45 and 2003 Opel Vectra were released in the same year (2003). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,494 cc (8 cylinders), 2003 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2003 Infiniti Q45 (340 HP @ 6400 RPM) has 167 more horse power than 2003 Opel Vectra. (173 HP @ 4000 RPM). In normal driving conditions, 2003 Infiniti Q45 should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti Q45 weights approximately 199 kg more than 2003 Opel Vectra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Infiniti Q45 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2003 Infiniti Q45. However, in wet, icy, snow, or gravel driving conditions, 2003 Opel Vectra, being front wheel drive (FWD), will offer much better control with better grip. 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, 2003 Infiniti Q45 (451 Nm @ 4000 RPM) has 81 more torque (in Nm) than 2003 Opel Vectra. (370 Nm @ 1900 RPM). This means 2003 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Vectra.
Compare all specifications:
| 2003 Infiniti Q45 | 2003 Opel Vectra | |
| Make | Infiniti | Opel |
| Model | Q45 | Vectra |
| Year Released | 2003 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 4494 cc | 2957 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 340 HP | 173 HP |
| Engine RPM | 6400 RPM | 4000 RPM |
| Torque | 451 Nm | 370 Nm |
| Torque RPM | 4000 RPM | 1900 RPM |
| Engine Compression Ratio | 10.5:1 | 18.5:1 |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1804 kg | 1605 kg |
| Vehicle Length | 5080 mm | 4600 mm |
| Vehicle Width | 1850 mm | 1770 mm |
| Vehicle Height | 1500 mm | 1470 mm |
| Wheelbase Size | 2880 mm | 2740 mm |
| Fuel Tank Capacity | 81 L | 60 L |
