2008 BMW 320 vs. 2006 Opel Signum
To start off, 2008 BMW 320 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Opel Signum. In addition, the cost of maintenance, including insurance, on 2006 Opel Signum would be higher. At 1,998 cc (4 cylinders), 2006 Opel Signum is equipped with a bigger engine. In terms of performance, 2006 Opel Signum (173 HP @ 5500 RPM) has 25 more horse power than 2008 BMW 320. (148 HP @ 4000 RPM) In normal driving conditions, 2006 Opel Signum should accelerate faster than 2008 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 320 weights approximately 120 kg more than 2006 Opel Signum.
Because 2008 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 2008 BMW 320. However, in wet, icy, snow, or gravel driving conditions, 2006 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, 2008 BMW 320 (330 Nm @ 2000 RPM) has 64 more torque (in Nm) than 2006 Opel Signum. (266 Nm @ 2500 RPM). This means 2008 BMW 320 will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Signum.
Compare all specifications:
| 2008 BMW 320 | 2006 Opel Signum | |
| Make | BMW | Opel |
| Model | 320 | Signum |
| Year Released | 2008 | 2006 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 173 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 330 Nm | 266 Nm |
| Torque RPM | 2000 RPM | 2500 RPM |
| Engine Bore Size | 84.1 mm | 86 mm |
| Engine Stroke Size | 90 mm | 86 mm |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 9.7 seconds | 9.4 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1680 kg | 1560 kg |
| Vehicle Length | 4490 mm | 4640 mm |
| Vehicle Width | 1760 mm | 1800 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2840 mm |
| Fuel Consumption Overall | 6.3 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
