1999 Alfa Romeo 146 vs. 2003 Opel Signum
To start off, 2003 Opel Signum is newer by 4 year(s). Which means there will be less support and parts availability for 1999 Alfa Romeo 146. In addition, the cost of maintenance, including insurance, on 1999 Alfa Romeo 146 would be higher. At 2,172 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 1999 Alfa Romeo 146 (118 HP @ 6300 RPM) has 3 more horse power than 2003 Opel Signum. (115 HP @ 3000 RPM). In normal driving conditions, 1999 Alfa Romeo 146 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 345 kg more than 1999 Alfa Romeo 146.
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 (280 Nm @ 1500 RPM) has 135 more torque (in Nm) than 1999 Alfa Romeo 146. (145 Nm @ 4500 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1999 Alfa Romeo 146.
Compare all specifications:
| 1999 Alfa Romeo 146 | 2003 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | 146 | Signum |
| Year Released | 1999 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 1598 cc | 2172 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 118 HP | 115 HP |
| Engine RPM | 6300 RPM | 3000 RPM |
| Torque | 145 Nm | 280 Nm |
| Torque RPM | 4500 RPM | 1500 RPM |
| Engine Bore Size | 83.1 mm | 84.1 mm |
| Engine Stroke Size | 75.7 mm | 98 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1190 kg | 1535 kg |
| Vehicle Length | 4270 mm | 4640 mm |
| Vehicle Width | 1720 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2840 mm |
