2008 BMW 320 vs. 2003 Opel Signum
To start off, 2008 BMW 320 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (175 HP @ 4000 RPM) has 14 more horse power than 2008 BMW 320. (161 HP @ 4000 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2008 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 180 kg more than 2008 BMW 320. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2003 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, 2003 Opel Signum (371 Nm @ 1900 RPM) has 41 more torque (in Nm) than 2008 BMW 320. (330 Nm @ 2000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 320.
Compare all specifications:
| 2008 BMW 320 | 2003 Opel Signum | |
| Make | BMW | Opel |
| Model | 320 | Signum |
| Year Released | 2008 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 161 HP | 175 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 330 Nm | 371 Nm |
| Torque RPM | 2000 RPM | 1900 RPM |
| Engine Bore Size | 84 mm | 87.5 mm |
| Engine Stroke Size | 90 mm | 82 mm |
| Fuel Type | Diesel | Diesel |
| Top Speed | 221 km/hour | 221 km/hour |
| Acceleration 0-100mph | 8.9 seconds | 9.4 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1490 kg | 1670 kg |
| Vehicle Length | 4870 mm | 4640 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2700 mm |
| Fuel Consumption Overall | 5.7 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 60 L | 60 L |
