1978 Mercury Grand Marquis vs. 2003 Avanti Sport Convertible
To start off, 2003 Avanti Sport Convertible is newer by 25 year(s). Which means there will be less support and parts availability for 1978 Mercury Grand Marquis. In addition, the cost of maintenance, including insurance, on 1978 Mercury Grand Marquis would be higher. At 5,766 cc (8 cylinders), 1978 Mercury Grand Marquis is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 1978 Mercury Grand Marquis weights approximately 60 kg more than 2003 Avanti Sport Convertible.
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 | 2003 Avanti Sport Convertible | |
| Make | Mercury | Avanti |
| Model | Grand Marquis | Sport Convertible |
| Year Released | 1978 | 2003 |
| Engine Size | 5766 cc | 5700 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 139 HP | 0 HP |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Vehicle Weight | 1710 kg | 1650 kg |
| Vehicle Length | 5400 mm | 4720 mm |
| Vehicle Width | 1980 mm | 1990 mm |
| Vehicle Height | 1390 mm | 1330 mm |
| Wheelbase Size | 2910 mm | 2570 mm |
