2009 Cadillac STS vs. 1998 Alfa Romeo 155
To start off, 2009 Cadillac STS is newer by 11 year(s). Which means there will be less support and parts availability for 1998 Alfa Romeo 155. In addition, the cost of maintenance, including insurance, on 1998 Alfa Romeo 155 would be higher. At 3,600 cc (6 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 1998 Alfa Romeo 155 (493 HP @ 11700 RPM) has 191 more horse power than 2009 Cadillac STS. (302 HP @ 6300 RPM) In normal driving conditions, 1998 Alfa Romeo 155 should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 520 kg more than 1998 Alfa Romeo 155.
Let's talk about torque, 2009 Cadillac STS (369 Nm @ 5200 RPM) has 69 more torque (in Nm) than 1998 Alfa Romeo 155. (300 Nm @ 9500 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1998 Alfa Romeo 155.
Compare all specifications:
| 2009 Cadillac STS | 1998 Alfa Romeo 155 | |
| Make | Cadillac | Alfa Romeo |
| Model | STS | 155 |
| Year Released | 2009 | 1998 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3600 cc | 2499 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 302 HP | 493 HP |
| Engine RPM | 6300 RPM | 11700 RPM |
| Torque | 369 Nm | 300 Nm |
| Torque RPM | 5200 RPM | 9500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1040 kg |
| Vehicle Width | 1850 mm | 1750 mm |
