2005 BMW 325 vs. 2001 Opel Signum
To start off, 2005 BMW 325 is newer by 4 year(s). Which means there will be less support and parts availability for 2001 Opel Signum. In addition, the cost of maintenance, including insurance, on 2001 Opel Signum would be higher. At 2,958 cc (6 cylinders), 2001 Opel Signum is equipped with a bigger engine. In terms of performance, 2005 BMW 325 (184 HP @ 7400 RPM) has 9 more horse power than 2001 Opel Signum. (175 HP @ 4000 RPM). In normal driving conditions, 2005 BMW 325 should accelerate faster than 2001 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2001 Opel Signum weights approximately 210 kg more than 2005 BMW 325.
Let's talk about torque, 2001 Opel Signum (370 Nm) has 133 more torque (in Nm) than 2005 BMW 325. (237 Nm). This means 2001 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 | 2001 Opel Signum | |
| Make | BMW | Opel |
| Model | 325 | Signum |
| Year Released | 2005 | 2001 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 184 HP | 175 HP |
| Engine RPM | 7400 RPM | 4000 RPM |
| Torque | 237 Nm | 370 Nm |
| Engine Bore Size | 84 mm | 87.5 mm |
| Engine Stroke Size | 75 mm | 82 mm |
| Engine Compression Ratio | 10.5:1 | 18.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1460 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 | 2710 mm |
| Fuel Tank Capacity | 63 L | 60 L |
