2004 Alfa Romeo 156 vs. 1999 Opel Omega
To start off, 2004 Alfa Romeo 156 is newer by 5 year(s). Which means there will be less support and parts availability for 1999 Opel Omega. In addition, the cost of maintenance, including insurance, on 1999 Opel Omega would be higher. At 2,498 cc (6 cylinders), 1999 Opel Omega is equipped with a bigger engine. In terms of performance, 2004 Alfa Romeo 156 (138 HP @ 6500 RPM) has 15 more horse power than 1999 Opel Omega. (123 HP @ 4500 RPM). In normal driving conditions, 2004 Alfa Romeo 156 should accelerate faster than 1999 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 1999 Opel Omega weights approximately 349 kg more than 2004 Alfa Romeo 156.
Because 1999 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 1999 Opel Omega. However, in wet, icy, snow, or gravel driving conditions, 2004 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, 1999 Opel Omega (251 Nm @ 2200 RPM) has 88 more torque (in Nm) than 2004 Alfa Romeo 156. (163 Nm @ 3900 RPM). This means 1999 Opel Omega will have an easier job in driving up hills or pulling heavy equipment than 2004 Alfa Romeo 156.
Compare all specifications:
| 2004 Alfa Romeo 156 | 1999 Opel Omega | |
| Make | Alfa Romeo | Opel |
| Model | 156 | Omega |
| Year Released | 2004 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 2498 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 138 HP | 123 HP |
| Engine RPM | 6500 RPM | 4500 RPM |
| Torque | 163 Nm | 251 Nm |
| Torque RPM | 3900 RPM | 2200 RPM |
| Engine Bore Size | 82 mm | 80 mm |
| Engine Stroke Size | 82.7 mm | 82.8 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 208 km/hour | 195 km/hour |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1386 kg | 1735 kg |
| Vehicle Length | 4440 mm | 4900 mm |
| Vehicle Width | 1750 mm | 1780 mm |
| Vehicle Height | 1400 mm | 1550 mm |
| Wheelbase Size | 2600 mm | 2640 mm |
| Fuel Tank Capacity | 63 L | 75 L |
