1987 Ford Sierra vs. 1971 Renault 15
To start off, 1987 Ford Sierra is newer by 16 year(s). Which means there will be less support and parts availability for 1971 Renault 15. In addition, the cost of maintenance, including insurance, on 1971 Renault 15 would be higher. At 1,796 cc (4 cylinders), 1987 Ford Sierra is equipped with a bigger engine. In terms of performance, 1987 Ford Sierra (90 HP @ 5400 RPM) has 1 more horse power than 1971 Renault 15. (89 HP @ 5500 RPM). In normal driving conditions, 1987 Ford Sierra should accelerate faster than 1971 Renault 15. With that said, vehicle weight also plays an important factor in acceleration. 1987 Ford Sierra weights approximately 35 kg more than 1971 Renault 15. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1987 Ford Sierra (143 Nm @ 3500 RPM) has 18 more torque (in Nm) than 1971 Renault 15. (125 Nm @ 3000 RPM). This means 1987 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1971 Renault 15.
Compare all specifications:
| 1987 Ford Sierra | 1971 Renault 15 | |
| Make | Ford | Renault |
| Model | Sierra | 15 |
| Year Released | 1987 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1565 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 90 HP | 89 HP |
| Engine RPM | 5400 RPM | 5500 RPM |
| Torque | 143 Nm | 125 Nm |
| Torque RPM | 3500 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1055 kg | 1020 kg |
| Vehicle Length | 4500 mm | 4260 mm |
| Vehicle Width | 1680 mm | 1640 mm |
| Vehicle Height | 1400 mm | 1320 mm |
| Wheelbase Size | 2620 mm | 2440 mm |
