2005 Opel Signum vs. 2004 Volkswagen Passat
To start off, 2005 Opel Signum is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Volkswagen Passat. In addition, the cost of maintenance, including insurance, on 2004 Volkswagen Passat would be higher. At 2,958 cc (6 cylinders), 2005 Opel Signum is equipped with a bigger engine. In terms of performance, 2005 Opel Signum (175 HP @ 4000 RPM) has 47 more horse power than 2004 Volkswagen Passat. (128 HP @ 4000 RPM). In normal driving conditions, 2005 Opel Signum should accelerate faster than 2004 Volkswagen Passat. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 105 kg more than 2004 Volkswagen Passat. 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, 2005 Opel Signum (370 Nm) has 20 more torque (in Nm) than 2004 Volkswagen Passat. (350 Nm). This means 2005 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2004 Volkswagen Passat.
Compare all specifications:
| 2005 Opel Signum | 2004 Volkswagen Passat | |
| Make | Opel | Volkswagen |
| Model | Signum | Passat |
| Year Released | 2005 | 2004 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 1896 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 175 HP | 128 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 370 Nm | 350 Nm |
| Engine Bore Size | 87.5 mm | 81 mm |
| Engine Stroke Size | 82 mm | 96 mm |
| Engine Compression Ratio | 18.5:1 | 18.5:1 |
| Fuel Type | Diesel | Diesel |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1670 kg | 1565 kg |
| Vehicle Length | 4640 mm | 4710 mm |
| Vehicle Width | 1800 mm | 1750 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2620 mm | 2710 mm |
| Fuel Tank Capacity | 60 L | 62 L |
