2005 BMW M3 vs. 2002 Opel Signum
To start off, 2005 BMW M3 is newer by 3 year(s). Which means there will be less support and parts availability for 2002 Opel Signum. In addition, the cost of maintenance, including insurance, on 2002 Opel Signum would be higher. At 3,244 cc (6 cylinders), 2005 BMW M3 is equipped with a bigger engine. In terms of performance, 2005 BMW M3 (320 HP @ 7400 RPM) has 146 more horse power than 2002 Opel Signum. (174 HP @ 4000 RPM). In normal driving conditions, 2005 BMW M3 should accelerate faster than 2002 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW M3 weights approximately 20 kg more than 2002 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW M3 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 2005 BMW M3. However, in wet, icy, snow, or gravel driving conditions, 2002 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, 2002 Opel Signum (377 Nm) has 40 more torque (in Nm) than 2005 BMW M3. (337 Nm). This means 2002 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW M3.
Compare all specifications:
| 2005 BMW M3 | 2002 Opel Signum | |
| Make | BMW | Opel |
| Model | M3 | Signum |
| Year Released | 2005 | 2002 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3244 cc | 2957 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 174 HP |
| Engine RPM | 7400 RPM | 4000 RPM |
| Torque | 337 Nm | 377 Nm |
| Engine Bore Size | 87 mm | 87.5 mm |
| Engine Stroke Size | 91 mm | 82 mm |
| Engine Compression Ratio | 11.5:1 | 18.5:1 |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1690 kg | 1670 kg |
| Vehicle Length | 4500 mm | 4640 mm |
| Vehicle Width | 1790 mm | 1800 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2740 mm | 2840 mm |
| Fuel Consumption Overall | 13.1 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 63 L | 58 L |
