2003 Ford Ka vs. 2008 Opel Signum
To start off, 2008 Opel Signum is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Ford Ka. In addition, the cost of maintenance, including insurance, on 2003 Ford Ka would be higher. At 2,957 cc (6 cylinders), 2008 Opel Signum is equipped with a bigger engine. In terms of performance, 2008 Opel Signum (175 HP @ 4000 RPM) has 102 more horse power than 2003 Ford Ka. (73 HP @ 6150 RPM) In normal driving conditions, 2008 Opel Signum should accelerate faster than 2003 Ford Ka. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 800 kg more than 2003 Ford Ka. 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, 2008 Opel Signum (370 Nm @ 1900 RPM) has 260 more torque (in Nm) than 2003 Ford Ka. (110 Nm @ 3000 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2003 Ford Ka.
Compare all specifications:
| 2003 Ford Ka | 2008 Opel Signum | |
| Make | Ford | Opel |
| Model | Ka | Signum |
| Year Released | 2003 | 2008 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1294 cc | 2957 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 73 HP | 175 HP |
| Engine RPM | 6150 RPM | 4000 RPM |
| Torque | 110 Nm | 370 Nm |
| Torque RPM | 3000 RPM | 1900 RPM |
| Engine Bore Size | 74 mm | 87.5 mm |
| Engine Stroke Size | 75.5 mm | 82 mm |
| Engine Compression Ratio | 10.0:1 | 18.5:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 167 km/hour | 221 km/hour |
| Acceleration 0-100mph | 14.1 seconds | 9.4 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 870 kg | 1670 kg |
| Vehicle Length | 3630 mm | 4640 mm |
| Vehicle Width | 1640 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2620 mm | 2840 mm |
| Fuel Consumption Overall | 11.8 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 42 L | 60 L |
