2003 Alfa Romeo 156 vs. 2002 Opel Omega
To start off, 2003 Alfa Romeo 156 is newer by 1 year(s). Which means there will be less support and parts availability for 2002 Opel Omega. In addition, the cost of maintenance, including insurance, on 2002 Opel Omega would be higher. At 2,497 cc (6 cylinders), 2002 Opel Omega is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 156 (173 HP @ 4000 RPM) has 25 more horse power than 2002 Opel Omega. (148 HP @ 4000 RPM). In normal driving conditions, 2003 Alfa Romeo 156 should accelerate faster than 2002 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 156 weights approximately 25 kg more than 2002 Opel Omega. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2002 Opel Omega is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2002 Opel Omega. However, in wet, icy, snow, or gravel driving conditions, 2003 Alfa Romeo 156, being front wheel drive (FWD), will offer much better control with better grip. 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 Alfa Romeo 156 (385 Nm @ 2000 RPM) has 85 more torque (in Nm) than 2002 Opel Omega. (300 Nm @ 1750 RPM). This means 2003 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2002 Opel Omega.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2002 Opel Omega | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Omega |
| Year Released | 2003 | 2002 |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 2497 cc |
| Engine Cylinders | 5 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 148 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 385 Nm | 300 Nm |
| Torque RPM | 2000 RPM | 1750 RPM |
| Engine Bore Size | 82 mm | 80 mm |
| Engine Stroke Size | 90.4 mm | 82.8 mm |
| Fuel Type | Diesel | Diesel |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1510 kg | 1485 kg |
| Vehicle Length | 4450 mm | 4900 mm |
| Vehicle Width | 1750 mm | 1780 mm |
| Vehicle Height | 1400 mm | 1460 mm |
| Wheelbase Size | 2600 mm | 2640 mm |
| Fuel Consumption Overall | 7 L/100km | 5.6 L/100km |
| Fuel Tank Capacity | 63 L | 75 L |
