2003 BMW 645 vs. 2001 Opel Vectra
To start off, 2003 BMW 645 is newer by 2 year(s). Which means there will be less support and parts availability for 2001 Opel Vectra. In addition, the cost of maintenance, including insurance, on 2001 Opel Vectra would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (325 HP @ 6100 RPM) has 202 more horse power than 2001 Opel Vectra. (123 HP @ 4000 RPM). In normal driving conditions, 2003 BMW 645 should accelerate faster than 2001 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 162 kg more than 2001 Opel Vectra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 BMW 645 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 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2001 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 BMW 645 (450 Nm @ 3600 RPM) has 170 more torque (in Nm) than 2001 Opel Vectra. (280 Nm @ 1500 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2001 Opel Vectra. 2001 Opel Vectra has automatic transmission and 2003 BMW 645 has manual transmission. 2003 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2001 Opel Vectra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW 645 | 2001 Opel Vectra | |
| Make | BMW | Opel |
| Model | 645 | Vectra |
| Year Released | 2003 | 2001 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2172 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 325 HP | 123 HP |
| Engine RPM | 6100 RPM | 4000 RPM |
| Torque | 450 Nm | 280 Nm |
| Torque RPM | 3600 RPM | 1500 RPM |
| Engine Bore Size | 92 mm | 84 mm |
| Engine Stroke Size | 82.7 mm | 98 mm |
| Engine Compression Ratio | 10.5:1 | 18.5:1 |
| Top Speed | 250 km/hour | 202 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 12.1 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1690 kg | 1528 kg |
| Vehicle Length | 4830 mm | 4500 mm |
| Vehicle Width | 1860 mm | 1800 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2840 mm |
| Fuel Consumption Overall | 11.7 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 70 L | 61 L |
