1978 Porsche 911 vs. 1998 Alfa Romeo 155
To start off, 1998 Alfa Romeo 155 is newer by 20 year(s). Which means there will be less support and parts availability for 1978 Porsche 911. In addition, the cost of maintenance, including insurance, on 1978 Porsche 911 would be higher. At 2,992 cc (6 cylinders), 1978 Porsche 911 is equipped with a bigger engine. In terms of performance, 1998 Alfa Romeo 155 (493 HP @ 11700 RPM) has 138 more horse power than 1978 Porsche 911. (355 HP @ 4200 RPM) In normal driving conditions, 1998 Alfa Romeo 155 should accelerate faster than 1978 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 1978 Porsche 911 weights approximately 139 kg more than 1998 Alfa Romeo 155.
Let's talk about torque, 1978 Porsche 911 (750 Nm @ 2000 RPM) has 450 more torque (in Nm) than 1998 Alfa Romeo 155. (300 Nm @ 9500 RPM). This means 1978 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1998 Alfa Romeo 155.
Compare all specifications:
| 1978 Porsche 911 | 1998 Alfa Romeo 155 | |
| Make | Porsche | Alfa Romeo |
| Model | 911 | 155 |
| Year Released | 1978 | 1998 |
| Body Type | Coupe | Sedan |
| Engine Position | Rear | Front |
| Engine Size | 2992 cc | 2499 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | boxer | in-line |
| Horse Power | 355 HP | 493 HP |
| Engine RPM | 4200 RPM | 11700 RPM |
| Torque | 750 Nm | 300 Nm |
| Torque RPM | 2000 RPM | 9500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1179 kg | 1040 kg |
| Vehicle Width | 1660 mm | 1750 mm |
