2003 Opel Signum vs. 2004 Smart ForFour
To start off, 2004 Smart ForFour is newer by 1 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 3,173 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (207 HP @ 6200 RPM) has 133 more horse power than 2004 Smart ForFour. (74 HP @ 6000 RPM). In normal driving conditions, 2003 Opel Signum should accelerate faster than 2004 Smart ForFour. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 648 kg more than 2004 Smart ForFour. 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 (300 Nm @ 4000 RPM) has 200 more torque (in Nm) than 2004 Smart ForFour. (100 Nm @ 3500 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2004 Smart ForFour. 2003 Opel Signum has automatic transmission and 2004 Smart ForFour has manual transmission. 2004 Smart ForFour 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:
| 2003 Opel Signum | 2004 Smart ForFour | |
| Make | Opel | Smart |
| Model | Signum | ForFour |
| Year Released | 2003 | 2004 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3173 cc | 1123 cc |
| Engine Cylinders | 6 cylinders | 3 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 207 HP | 74 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 300 Nm | 100 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 87.5 mm | 75.5 mm |
| Engine Stroke Size | 88 mm | 84.8 mm |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Top Speed | 235 km/hour | 165 km/hour |
| Acceleration 0-100mph | 8.5 seconds | 13.4 seconds |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1613 kg | 965 kg |
| Vehicle Length | 4640 mm | 3760 mm |
| Vehicle Width | 1800 mm | 1690 mm |
| Vehicle Height | 1470 mm | 1460 mm |
| Wheelbase Size | 2840 mm | 2510 mm |
| Fuel Consumption Overall | 10.7 L/100km | 5.5 L/100km |
| Fuel Tank Capacity | 60 L | 47 L |
