1978 Mercury Grand Marquis vs. 1956 Porsche 550 A
To start off, 1978 Mercury Grand Marquis is newer by 22 year(s). Which means there will be less support and parts availability for 1956 Porsche 550 A. In addition, the cost of maintenance, including insurance, on 1956 Porsche 550 A would be higher. At 5,766 cc (8 cylinders), 1978 Mercury Grand Marquis is equipped with a bigger engine. In terms of performance, 1978 Mercury Grand Marquis (139 HP @ 3200 RPM) has 31 more horse power than 1956 Porsche 550 A. (108 HP @ 7200 RPM). In normal driving conditions, 1978 Mercury Grand Marquis should accelerate faster than 1956 Porsche 550 A. With that said, vehicle weight also plays an important factor in acceleration. 1978 Mercury Grand Marquis weights approximately 1105 kg more than 1956 Porsche 550 A. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control.
Compare all specifications:
| 1978 Mercury Grand Marquis | 1956 Porsche 550 A | |
| Make | Mercury | Porsche |
| Model | Grand Marquis | 550 A |
| Year Released | 1978 | 1956 |
| Engine Position | Front | Rear |
| Engine Size | 5766 cc | 1498 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | boxer |
| Horse Power | 139 HP | 108 HP |
| Engine RPM | 3200 RPM | 7200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1710 kg | 605 kg |
| Vehicle Length | 5400 mm | 3960 mm |
| Vehicle Width | 1980 mm | 1680 mm |
| Vehicle Height | 1390 mm | 1230 mm |
| Wheelbase Size | 2910 mm | 2110 mm |
