2003 Opel Signum vs. 2004 Opel Zafira
To start off, 2004 Opel Zafira is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 2,172 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (115 HP @ 3000 RPM) has 14 more horse power than 2004 Opel Zafira. (101 HP @ 6200 RPM). In normal driving conditions, 2003 Opel Signum should accelerate faster than 2004 Opel Zafira. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 155 kg more than 2004 Opel Zafira. 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, 2003 Opel Signum (280 Nm @ 1500 RPM) has 130 more torque (in Nm) than 2004 Opel Zafira. (150 Nm @ 3600 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Zafira.
Compare all specifications:
| 2003 Opel Signum | 2004 Opel Zafira | |
| Make | Opel | Opel |
| Model | Signum | Zafira |
| Year Released | 2003 | 2004 |
| Body Type | Hatchback | Minivan |
| Engine Position | Front | Front |
| Engine Size | 2172 cc | 1598 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 115 HP | 101 HP |
| Engine RPM | 3000 RPM | 6200 RPM |
| Torque | 280 Nm | 150 Nm |
| Torque RPM | 1500 RPM | 3600 RPM |
| Engine Bore Size | 84.1 mm | 79 mm |
| Engine Stroke Size | 98 mm | 81.5 mm |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Front | Front |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1535 kg | 1380 kg |
| Vehicle Length | 4640 mm | 4320 mm |
| Vehicle Width | 1800 mm | 1750 mm |
| Vehicle Height | 1470 mm | 1640 mm |
| Wheelbase Size | 2840 mm | 2610 mm |
