1978 Mercury Grand Marquis vs. 2006 Audi S4
To start off, 2006 Audi S4 is newer by 28 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, 2006 Audi S4 (339 HP @ 7000 RPM) has 200 more horse power than 1978 Mercury Grand Marquis. (139 HP @ 3200 RPM) In normal driving conditions, 2006 Audi S4 should accelerate faster than 1978 Mercury Grand Marquis. With that said, vehicle weight also plays an important factor in acceleration. 1978 Mercury Grand Marquis weights approximately 435 kg more than 2006 Audi S4.
Because 2006 Audi S4 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, 2006 Audi S4 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, 2006 Audi S4 (411 Nm @ 3500 RPM) has 58 more torque (in Nm) than 1978 Mercury Grand Marquis. (353 Nm @ 2200 RPM). This means 2006 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1978 Mercury Grand Marquis.
Compare all specifications:
| 1978 Mercury Grand Marquis | 2006 Audi S4 | |
| Make | Mercury | Audi |
| Model | Grand Marquis | S4 |
| Year Released | 1978 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5766 cc | 4163 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 139 HP | 339 HP |
| Engine RPM | 3200 RPM | 7000 RPM |
| Torque | 353 Nm | 411 Nm |
| Torque RPM | 2200 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1710 kg | 1275 kg |
| Vehicle Length | 5400 mm | 4580 mm |
| Vehicle Width | 1980 mm | 1790 mm |
| Vehicle Height | 1390 mm | 1450 mm |
| Wheelbase Size | 2910 mm | 2660 mm |
