2006 BMW 320 vs. 2004 Opel Signum
To start off, 2006 BMW 320 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 2,171 cc (6 cylinders), 2006 BMW 320 is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (173 HP @ 5500 RPM) has 5 more horse power than 2006 BMW 320. (168 HP @ 6100 RPM) In normal driving conditions, 2004 Opel Signum should accelerate faster than 2006 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 40 kg more than 2006 BMW 320. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW 320 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 2006 BMW 320. However, in wet, icy, snow, or gravel driving conditions, 2004 Opel Signum, 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, 2004 Opel Signum (265 Nm @ 2500 RPM) has 55 more torque (in Nm) than 2006 BMW 320. (210 Nm @ 3500 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 320.
Compare all specifications:
| 2006 BMW 320 | 2004 Opel Signum | |
| Make | BMW | Opel |
| Model | 320 | Signum |
| Year Released | 2006 | 2004 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 168 HP | 173 HP |
| Engine RPM | 6100 RPM | 5500 RPM |
| Torque | 210 Nm | 265 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Engine Bore Size | 80.1 mm | 86 mm |
| Engine Stroke Size | 72 mm | 86 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1520 kg | 1560 kg |
| Vehicle Length | 4480 mm | 4640 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2840 mm |
| Fuel Consumption Overall | 9 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
