2009 Audi A4 vs. 1971 Renault 15
To start off, 2009 Audi A4 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 1,779 cc (4 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (161 HP @ 5700 RPM) has 72 more horse power than 1971 Renault 15. (89 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1971 Renault 15. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 520 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 Audi A4 (225 Nm @ 1950 RPM) has 100 more torque (in Nm) than 1971 Renault 15. (125 Nm @ 3000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1971 Renault 15.
Compare all specifications:
| 2009 Audi A4 | 1971 Renault 15 | |
| Make | Audi | Renault |
| Model | A4 | 15 |
| Year Released | 2009 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 1565 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 161 HP | 89 HP |
| Engine RPM | 5700 RPM | 5500 RPM |
| Torque | 225 Nm | 125 Nm |
| Torque RPM | 1950 RPM | 3000 RPM |
| Engine Bore Size | 81 mm | 77 mm |
| Engine Stroke Size | 86.4 mm | 84 mm |
| Engine Compression Ratio | 9.0:1 | 9.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1540 kg | 1020 kg |
| Vehicle Length | 4580 mm | 4260 mm |
| Vehicle Width | 1780 mm | 1640 mm |
| Vehicle Height | 1400 mm | 1320 mm |
| Wheelbase Size | 2660 mm | 2440 mm |
| Fuel Tank Capacity | 70 L | 38 L |
