2007 BMW 325 vs. 2004 Opel Signum
To start off, 2007 BMW 325 is newer by 3 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 2,497 cc (6 cylinders), 2007 BMW 325 is equipped with a bigger engine. In terms of performance, 2007 BMW 325 (215 HP @ 6500 RPM) has 90 more horse power than 2004 Opel Signum. (125 HP @ 5600 RPM). In normal driving conditions, 2007 BMW 325 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 325 weights approximately 144 kg more than 2004 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW 325 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 2007 BMW 325. 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, 2007 BMW 325 (250 Nm @ 2750 RPM) has 80 more torque (in Nm) than 2004 Opel Signum. (170 Nm @ 3800 RPM). This means 2007 BMW 325 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 2007 BMW 325 | 2004 Opel Signum | |
| Make | BMW | Opel |
| Model | 325 | Signum |
| Year Released | 2007 | 2004 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 1796 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 125 HP |
| Engine RPM | 6500 RPM | 5600 RPM |
| Torque | 250 Nm | 170 Nm |
| Torque RPM | 2750 RPM | 3800 RPM |
| Engine Bore Size | 78.8 mm | 80.5 mm |
| Engine Stroke Size | 82 mm | 88.2 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 245 km/hour | 197 km/hour |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1524 kg | 1380 kg |
| Vehicle Length | 4530 mm | 4640 mm |
| Vehicle Width | 1430 mm | 1800 mm |
| Vehicle Height | 1820 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2700 mm |
| Fuel Consumption Highway | 7.8 L/100km | 6.1 L/100km |
| Fuel Consumption Overall | 9 L/100km | 7.5 L/100km |
| Fuel Tank Capacity | 60 L | 58 L |
