2005 BMW 325 vs. 2003 Opel Signum
To start off, 2005 BMW 325 is newer by 2 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, 2005 BMW 325 (189 HP @ 7400 RPM) has 14 more horse power than 2003 Opel Signum. (175 HP @ 4000 RPM). In normal driving conditions, 2005 BMW 325 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 145 kg more than 2005 BMW 325.
Let's talk about torque, 2003 Opel Signum (371 Nm) has 133 more torque (in Nm) than 2005 BMW 325. (238 Nm). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 325.
Compare all specifications:
| 2005 BMW 325 | 2003 Opel Signum | |
| Make | BMW | Opel |
| Model | 325 | Signum |
| Year Released | 2005 | 2003 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2491 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 175 HP |
| Engine RPM | 7400 RPM | 4000 RPM |
| Torque | 238 Nm | 371 Nm |
| Engine Bore Size | 84 mm | 87.5 mm |
| Engine Stroke Size | 75 mm | 82 mm |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1525 kg | 1670 kg |
| Vehicle Length | 4480 mm | 4640 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2700 mm |
| Fuel Consumption Overall | 9.8 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
