2003 Alfa Romeo 156 vs. 1975 Cadillac Calais
To start off, 2003 Alfa Romeo 156 is newer by 28 year(s). Which means there will be less support and parts availability for 1975 Cadillac Calais. In addition, the cost of maintenance, including insurance, on 1975 Cadillac Calais would be higher. At 8,192 cc (8 cylinders), 1975 Cadillac Calais is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 156 (189 HP @ 6300 RPM) has 9 more horse power than 1975 Cadillac Calais. (180 HP @ 4400 RPM). In normal driving conditions, 2003 Alfa Romeo 156 should accelerate faster than 1975 Cadillac Calais. With that said, vehicle weight also plays an important factor in acceleration. 1975 Cadillac Calais weights approximately 870 kg more than 2003 Alfa Romeo 156.
Compare all specifications:
| 2003 Alfa Romeo 156 | 1975 Cadillac Calais | |
| Make | Alfa Romeo | Cadillac |
| Model | 156 | Calais |
| Year Released | 2003 | 1975 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 8192 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 189 HP | 180 HP |
| Engine RPM | 6300 RPM | 4400 RPM |
| Vehicle Weight | 1435 kg | 2305 kg |
| Vehicle Length | 4440 mm | 5880 mm |
| Wheelbase Size | 2710 mm | 3310 mm |
