1997 Alfa Romeo 155 vs. 1999 Opel Omega
To start off, 1999 Opel Omega is newer by 2 year(s). Which means there will be less support and parts availability for 1997 Alfa Romeo 155. In addition, the cost of maintenance, including insurance, on 1997 Alfa Romeo 155 would be higher. At 2,499 cc (6 cylinders), 1997 Alfa Romeo 155 is equipped with a bigger engine. In terms of performance, 1997 Alfa Romeo 155 (493 HP @ 11700 RPM) has 370 more horse power than 1999 Opel Omega. (123 HP @ 4500 RPM). In normal driving conditions, 1997 Alfa Romeo 155 should accelerate faster than 1999 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 1999 Opel Omega weights approximately 695 kg more than 1997 Alfa Romeo 155.
Let's talk about torque, 1997 Alfa Romeo 155 (300 Nm @ 9500 RPM) has 49 more torque (in Nm) than 1999 Opel Omega. (251 Nm @ 2200 RPM). This means 1997 Alfa Romeo 155 will have an easier job in driving up hills or pulling heavy equipment than 1999 Opel Omega.
Compare all specifications:
| 1997 Alfa Romeo 155 | 1999 Opel Omega | |
| Make | Alfa Romeo | Opel |
| Model | 155 | Omega |
| Year Released | 1997 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 2499 cc | 2498 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 493 HP | 123 HP |
| Engine RPM | 11700 RPM | 4500 RPM |
| Torque | 300 Nm | 251 Nm |
| Torque RPM | 9500 RPM | 2200 RPM |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1040 kg | 1735 kg |
| Vehicle Width | 1750 mm | 1780 mm |
