2002 Mazda 6 vs. 2004 Opel Signum
To start off, 2004 Opel Signum is newer by 2 year(s). Which means there will be less support and parts availability for 2002 Mazda 6. In addition, the cost of maintenance, including insurance, on 2002 Mazda 6 would be higher. At 1,798 cc (4 cylinders), 2002 Mazda 6 is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (125 HP @ 5600 RPM) has 5 more horse power than 2002 Mazda 6. (120 HP @ 5300 RPM) In normal driving conditions, 2004 Opel Signum should accelerate faster than 2002 Mazda 6. With that said, vehicle weight also plays an important factor in acceleration. 2002 Mazda 6 weights approximately 40 kg more than 2004 Opel Signum.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2004 Opel Signum (170 Nm @ 3800 RPM) has 2 more torque (in Nm) than 2002 Mazda 6. (168 Nm @ 4500 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2002 Mazda 6.
Compare all specifications:
| 2002 Mazda 6 | 2004 Opel Signum | |
| Make | Mazda | Opel |
| Model | 6 | Signum |
| Year Released | 2002 | 2004 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 1796 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 120 HP | 125 HP |
| Engine RPM | 5300 RPM | 5600 RPM |
| Torque | 168 Nm | 170 Nm |
| Torque RPM | 4500 RPM | 3800 RPM |
| Engine Bore Size | 83 mm | 80.5 mm |
| Engine Stroke Size | 83.1 mm | 88.2 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1420 kg | 1380 kg |
| Vehicle Length | 4690 mm | 4640 mm |
| Vehicle Width | 1790 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2680 mm | 2700 mm |
| Fuel Tank Capacity | 64 L | 58 L |
