2006 BMW Z4 vs. 1973 Cadillac Calais
To start off, 2006 BMW Z4 is newer by 33 year(s). Which means there will be less support and parts availability for 1973 Cadillac Calais. In addition, the cost of maintenance, including insurance, on 1973 Cadillac Calais would be higher. At 7,734 cc (8 cylinders), 1973 Cadillac Calais is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (229 HP @ 5900 RPM) has 21 more horse power than 1973 Cadillac Calais. (208 HP @ 4400 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1973 Cadillac Calais. With that said, vehicle weight also plays an important factor in acceleration. 1973 Cadillac Calais weights approximately 615 kg more than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 1973 Cadillac Calais | |
| Make | BMW | Cadillac |
| Model | Z4 | Calais |
| Year Released | 2006 | 1973 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 7734 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 229 HP | 208 HP |
| Engine RPM | 5900 RPM | 4400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1630 kg | 2245 kg |
| Vehicle Length | 4570 mm | 5880 mm |
| Wheelbase Size | 2500 mm | 3310 mm |
