2004 Opel Signum vs. 2005 Opel Zafira
To start off, 2005 Opel Zafira is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 2,198 cc (4 cylinders), 2005 Opel Zafira is equipped with a bigger engine. In terms of performance, 2005 Opel Zafira (120 HP @ 4000 RPM) has 21 more horse power than 2004 Opel Signum. (99 HP @ 3120 RPM) In normal driving conditions, 2005 Opel Zafira should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 45 kg more than 2005 Opel Zafira.
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, 2005 Opel Zafira (280 Nm @ 1500 RPM) has 50 more torque (in Nm) than 2004 Opel Signum. (230 Nm @ 1500 RPM). This means 2005 Opel Zafira will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
| 2004 Opel Signum | 2005 Opel Zafira | |
| Make | Opel | Opel |
| Model | Signum | Zafira |
| Year Released | 2004 | 2005 |
| Body Type | Hatchback | Minivan |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 2198 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 99 HP | 120 HP |
| Engine RPM | 3120 RPM | 4000 RPM |
| Torque | 230 Nm | 280 Nm |
| Torque RPM | 1500 RPM | 1500 RPM |
| Engine Bore Size | 84.1 mm | 84 mm |
| Engine Stroke Size | 90 mm | 98 mm |
| Engine Compression Ratio | 18.5:1 | 18.5:1 |
| Fuel Type | Diesel | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1595 kg | 1550 kg |
| Vehicle Length | 4640 mm | 4320 mm |
| Vehicle Width | 1800 mm | 1750 mm |
| Vehicle Height | 1470 mm | 1640 mm |
| Wheelbase Size | 2620 mm | 2610 mm |
| Fuel Consumption Overall | 5.9 L/100km | 6.9 L/100km |
| Fuel Tank Capacity | 58 L | 58 L |
