2003 Mazda 3 vs. 2007 Opel Signum
To start off, 2007 Opel Signum is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Mazda 3. In addition, the cost of maintenance, including insurance, on 2003 Mazda 3 would be higher. At 2,958 cc (6 cylinders), 2007 Opel Signum is equipped with a bigger engine. In terms of performance, 2007 Opel Signum (175 HP @ 4000 RPM) has 71 more horse power than 2003 Mazda 3. (104 HP @ 4000 RPM) In normal driving conditions, 2007 Opel Signum should accelerate faster than 2003 Mazda 3. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 530 kg more than 2003 Mazda 3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2007 Opel Signum (370 Nm @ 1900 RPM) has 222 more torque (in Nm) than 2003 Mazda 3. (148 Nm @ 4000 RPM). This means 2007 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2003 Mazda 3.
Compare all specifications:
| 2003 Mazda 3 | 2007 Opel Signum | |
| Make | Mazda | Opel |
| Model | 3 | Signum |
| Year Released | 2003 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1598 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 104 HP | 175 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 148 Nm | 370 Nm |
| Torque RPM | 4000 RPM | 1900 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1140 kg | 1670 kg |
| Vehicle Length | 4430 mm | 4640 mm |
| Vehicle Width | 1760 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2610 mm | 2840 mm |
| Fuel Consumption Overall | 7.2 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 55 L | 60 L |
