1973 Mercury Cougar vs. 1978 Renault Siete
To start off, 1978 Renault Siete is newer by 5 year(s). Which means there will be less support and parts availability for 1973 Mercury Cougar. In addition, the cost of maintenance, including insurance, on 1973 Mercury Cougar would be higher. At 5,769 cc (8 cylinders), 1973 Mercury Cougar is equipped with a bigger engine. In terms of performance, 1973 Mercury Cougar (168 HP @ 4000 RPM) has 119 more horse power than 1978 Renault Siete. (49 HP @ 5000 RPM). In normal driving conditions, 1973 Mercury Cougar should accelerate faster than 1978 Renault Siete. With that said, vehicle weight also plays an important factor in acceleration. 1973 Mercury Cougar weights approximately 834 kg more than 1978 Renault Siete. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1973 Mercury Cougar is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1973 Mercury Cougar. However, in wet, icy, snow, or gravel driving conditions, 1978 Renault Siete, being front wheel drive (FWD), will offer much better control with better grip. 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, 1973 Mercury Cougar (363 Nm @ 2400 RPM) has 291 more torque (in Nm) than 1978 Renault Siete. (72 Nm @ 3000 RPM). This means 1973 Mercury Cougar will have an easier job in driving up hills or pulling heavy equipment than 1978 Renault Siete.
Compare all specifications:
| 1973 Mercury Cougar | 1978 Renault Siete | |
| Make | Mercury | Renault |
| Model | Cougar | Siete |
| Year Released | 1973 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 5769 cc | 1037 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 168 HP | 49 HP |
| Engine RPM | 4000 RPM | 5000 RPM |
| Torque | 363 Nm | 72 Nm |
| Torque RPM | 2400 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Vehicle Weight | 1650 kg | 816 kg |
| Vehicle Length | 5080 mm | 3900 mm |
| Vehicle Width | 1920 mm | 1530 mm |
| Vehicle Height | 1310 mm | 1430 mm |
| Wheelbase Size | 2860 mm | 2540 mm |
