2009 Mazda CX-7 vs. 1971 Renault 15
To start off, 2009 Mazda CX-7 is newer by 38 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 2,260 cc (4 cylinders), 2009 Mazda CX-7 is equipped with a bigger engine. In terms of performance, 2009 Mazda CX-7 (244 HP @ 5000 RPM) has 155 more horse power than 1971 Renault 15. (89 HP @ 5500 RPM). In normal driving conditions, 2009 Mazda CX-7 should accelerate faster than 1971 Renault 15. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mazda CX-7 weights approximately 312 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, 2009 Mazda CX-7 (350 Nm @ 2500 RPM) has 225 more torque (in Nm) than 1971 Renault 15. (125 Nm @ 3000 RPM). This means 2009 Mazda CX-7 will have an easier job in driving up hills or pulling heavy equipment than 1971 Renault 15.
Compare all specifications:
| 2009 Mazda CX-7 | 1971 Renault 15 | |
| Make | Mazda | Renault |
| Model | CX-7 | 15 |
| Year Released | 2009 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 2260 cc | 1565 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 244 HP | 89 HP |
| Engine RPM | 5000 RPM | 5500 RPM |
| Torque | 350 Nm | 125 Nm |
| Torque RPM | 2500 RPM | 3000 RPM |
| Engine Compression Ratio | 10.0:1 | 9.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 3 doors |
| Vehicle Weight | 1332 kg | 1020 kg |
| Vehicle Length | 4680 mm | 4260 mm |
| Vehicle Width | 1880 mm | 1640 mm |
| Vehicle Height | 1650 mm | 1320 mm |
| Wheelbase Size | 2760 mm | 2440 mm |
| Fuel Tank Capacity | 69 L | 38 L |
