2005 Alfa Romeo Spider vs. 2003 Opel Signum
To start off, 2005 Alfa Romeo Spider is newer by 2 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 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (175 HP @ 4000 RPM) has 12 more horse power than 2005 Alfa Romeo Spider. (163 HP @ 6400 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2005 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 190 kg more than 2005 Alfa Romeo Spider. 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 (371 Nm @ 1900 RPM) has 165 more torque (in Nm) than 2005 Alfa Romeo Spider. (206 Nm @ 3250 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo Spider. 2003 Opel Signum has automatic transmission and 2005 Alfa Romeo Spider has manual transmission. 2005 Alfa Romeo Spider will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Alfa Romeo Spider | 2003 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | Spider | Signum |
| Year Released | 2005 | 2003 |
| Body Type | Roadster | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 163 HP | 175 HP |
| Engine RPM | 6400 RPM | 4000 RPM |
| Torque | 206 Nm | 371 Nm |
| Torque RPM | 3250 RPM | 1900 RPM |
| Engine Bore Size | 83 mm | 87.5 mm |
| Engine Stroke Size | 91 mm | 82 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 210 km/hour | 221 km/hour |
| Acceleration 0-100mph | 8.7 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1480 kg | 1670 kg |
| Vehicle Length | 4310 mm | 4640 mm |
| Vehicle Width | 1780 mm | 1800 mm |
| Vehicle Height | 1320 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2700 mm |
| Fuel Consumption Overall | 9.2 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
