1978 Mercury Cougar vs. 1989 Renault 21
To start off, 1989 Renault 21 is newer by 11 year(s). Which means there will be less support and parts availability for 1978 Mercury Cougar. In addition, the cost of maintenance, including insurance, on 1978 Mercury Cougar would be higher. At 4,941 cc (8 cylinders), 1978 Mercury Cougar is equipped with a bigger engine. In terms of performance, 1978 Mercury Cougar (133 HP @ 3400 RPM) has 58 more horse power than 1989 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 1978 Mercury Cougar should accelerate faster than 1989 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 1978 Mercury Cougar weights approximately 835 kg more than 1989 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1978 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 1978 Mercury Cougar. However, in wet, icy, snow, or gravel driving conditions, 1989 Renault 21, 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, 1978 Mercury Cougar (336 Nm @ 1600 RPM) has 207 more torque (in Nm) than 1989 Renault 21. (129 Nm @ 3250 RPM). This means 1978 Mercury Cougar will have an easier job in driving up hills or pulling heavy equipment than 1989 Renault 21.
Compare all specifications:
| 1978 Mercury Cougar | 1989 Renault 21 | |
| Make | Mercury | Renault |
| Model | Cougar | 21 |
| Year Released | 1978 | 1989 |
| Engine Position | Front | Front |
| Engine Size | 4941 cc | 1721 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 133 HP | 75 HP |
| Engine RPM | 3400 RPM | 5000 RPM |
| Torque | 336 Nm | 129 Nm |
| Torque RPM | 1600 RPM | 3250 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Vehicle Weight | 1855 kg | 1020 kg |
| Vehicle Length | 5480 mm | 4650 mm |
| Vehicle Width | 2010 mm | 1720 mm |
| Vehicle Height | 1340 mm | 1430 mm |
| Wheelbase Size | 2910 mm | 2820 mm |
