2002 GMC Envoy vs. 1978 Mercury Grand Marquis
To start off, 2002 GMC Envoy is newer by 24 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. In terms of performance, 2002 GMC Envoy (286 HP @ 5200 RPM) has 147 more horse power than 1978 Mercury Grand Marquis. (139 HP @ 3200 RPM). In normal driving conditions, 2002 GMC Envoy should accelerate faster than 1978 Mercury Grand Marquis. With that said, vehicle weight also plays an important factor in acceleration. 2002 GMC Envoy weights approximately 560 kg more than 1978 Mercury Grand Marquis. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2002 GMC Envoy is four wheel drive (4WD), it will have significant more traction and grip than 1978 Mercury Grand Marquis. In wet, icy, snow, or gravel driving conditions, 2002 GMC Envoy will offer significantly more control. 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. Let's talk about torque, 2002 GMC Envoy (448 Nm @ 4000 RPM) has 95 more torque (in Nm) than 1978 Mercury Grand Marquis. (353 Nm @ 2200 RPM). This means 2002 GMC Envoy will have an easier job in driving up hills or pulling heavy equipment than 1978 Mercury Grand Marquis.
Compare all specifications:
| 2002 GMC Envoy | 1978 Mercury Grand Marquis | |
| Make | GMC | Mercury |
| Model | Envoy | Grand Marquis |
| Year Released | 2002 | 1978 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5300 cc | 5766 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 286 HP | 139 HP |
| Engine RPM | 5200 RPM | 3200 RPM |
| Torque | 448 Nm | 353 Nm |
| Torque RPM | 4000 RPM | 2200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Vehicle Weight | 2270 kg | 1710 kg |
| Vehicle Length | 4870 mm | 5400 mm |
| Vehicle Width | 1840 mm | 1980 mm |
| Vehicle Height | 1780 mm | 1390 mm |
| Wheelbase Size | 2880 mm | 2910 mm |
