2004 BMW M3 vs. 2007 Opel Signum
To start off, 2007 Opel Signum is newer by 3 year(s). Which means there will be less support and parts availability for 2004 BMW M3. In addition, the cost of maintenance, including insurance, on 2004 BMW M3 would be higher. At 3,246 cc (6 cylinders), 2004 BMW M3 is equipped with a bigger engine. In terms of performance, 2004 BMW M3 (328 HP @ 7400 RPM) has 153 more horse power than 2007 Opel Signum. (175 HP @ 4000 RPM). In normal driving conditions, 2004 BMW M3 should accelerate faster than 2007 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 121 kg more than 2004 BMW M3.
Because 2004 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 2004 BMW M3. However, in wet, icy, snow, or gravel driving conditions, 2007 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 Opel Signum (370 Nm) has 20 more torque (in Nm) than 2004 BMW M3. (350 Nm). This means 2007 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW M3.
Compare all specifications:
| 2004 BMW M3 | 2007 Opel Signum | |
| Make | BMW | Opel |
| Model | M3 | Signum |
| Year Released | 2004 | 2007 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 175 HP |
| Engine RPM | 7400 RPM | 4000 RPM |
| Torque | 350 Nm | 370 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 | 5 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1549 kg | 1670 kg |
| Vehicle Length | 4500 mm | 4640 mm |
| Vehicle Width | 1790 mm | 1800 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2840 mm |
| Fuel Consumption Overall | 12.4 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
