2003 Ford Ka vs. 2007 Opel Signum
To start off, 2007 Opel Signum is newer by 4 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 3,173 cc (6 cylinders), 2007 Opel Signum is equipped with a bigger engine. In terms of performance, 2007 Opel Signum (208 HP @ 6200 RPM) has 139 more horse power than 2003 Ford Ka. (69 HP @ 5600 RPM) In normal driving conditions, 2007 Opel Signum should accelerate faster than 2003 Ford Ka. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 648 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, 2007 Opel Signum (300 Nm @ 4000 RPM) has 194 more torque (in Nm) than 2003 Ford Ka. (106 Nm @ 3000 RPM). This means 2007 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 | 2007 Opel Signum | |
| Make | Ford | Opel |
| Model | Ka | Signum |
| Year Released | 2003 | 2007 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1299 cc | 3173 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 69 HP | 208 HP |
| Engine RPM | 5600 RPM | 6200 RPM |
| Torque | 106 Nm | 300 Nm |
| Torque RPM | 3000 RPM | 4000 RPM |
| Engine Bore Size | 74 mm | 87.5 mm |
| Engine Stroke Size | 75.5 mm | 88 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 167 km/hour | 237 km/hour |
| Acceleration 0-100mph | 14.1 seconds | 7.9 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 | 962 kg | 1610 kg |
| Vehicle Length | 3630 mm | 4640 mm |
| Vehicle Width | 1650 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2450 mm | 2840 mm |
| Fuel Consumption Overall | 6 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 40 L | 60 L |
