2008 BMW 325 vs. 2004 Opel Signum
To start off, 2008 BMW 325 is newer by 4 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 2,494 cc (6 cylinders), 2008 BMW 325 is equipped with a bigger engine. In terms of performance, 2008 BMW 325 (189 HP @ 6000 RPM) has 41 more horse power than 2004 Opel Signum. (148 HP @ 4000 RPM). In normal driving conditions, 2008 BMW 325 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 35 kg more than 2008 BMW 325.
Because 2008 BMW 325 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Opel Signum. In wet, icy, snow, or gravel driving conditions, 2008 BMW 325 will offer significantly more control. 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 (326 Nm @ 2000 RPM) has 81 more torque (in Nm) than 2008 BMW 325. (245 Nm @ 3500 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 325.
Compare all specifications:
| 2008 BMW 325 | 2004 Opel Signum | |
| Make | BMW | Opel |
| Model | 325 | Signum |
| Year Released | 2008 | 2004 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 1908 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 189 HP | 148 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 245 Nm | 326 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 75 mm | 90.4 mm |
| Engine Compression Ratio | 11.0:1 | 18.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 234 km/hour | 209 km/hour |
| Acceleration 0-100mph | 7.8 seconds | 10.5 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1575 kg | 1610 kg |
| Vehicle Length | 4480 mm | 4640 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2840 mm |
| Fuel Consumption Overall | 10 L/100km | 6.1 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
