1997 Citroen XM vs. 1971 Renault 15
To start off, 1997 Citroen XM is newer by 26 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 1,998 cc (4 cylinders), 1997 Citroen XM is equipped with a bigger engine. In terms of performance, 1997 Citroen XM (115 HP @ 5750 RPM) has 26 more horse power than 1971 Renault 15. (89 HP @ 5500 RPM). In normal driving conditions, 1997 Citroen XM should accelerate faster than 1971 Renault 15. With that said, vehicle weight also plays an important factor in acceleration. 1997 Citroen XM weights approximately 260 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, 1997 Citroen XM (175 Nm @ 4250 RPM) has 50 more torque (in Nm) than 1971 Renault 15. (125 Nm @ 3000 RPM). This means 1997 Citroen XM will have an easier job in driving up hills or pulling heavy equipment than 1971 Renault 15.
Compare all specifications:
| 1997 Citroen XM | 1971 Renault 15 | |
| Make | Citroen | Renault |
| Model | XM | 15 |
| Year Released | 1997 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 1565 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 115 HP | 89 HP |
| Engine RPM | 5750 RPM | 5500 RPM |
| Torque | 175 Nm | 125 Nm |
| Torque RPM | 4250 RPM | 3000 RPM |
| Engine Bore Size | 86 mm | 77 mm |
| Engine Stroke Size | 86 mm | 84 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 3 doors |
| Vehicle Weight | 1280 kg | 1020 kg |
| Vehicle Length | 4720 mm | 4260 mm |
| Vehicle Width | 1800 mm | 1640 mm |
| Vehicle Height | 1400 mm | 1320 mm |
| Wheelbase Size | 2760 mm | 2440 mm |
| Fuel Tank Capacity | 66 L | 38 L |
