2004 BMW M6 vs. 1971 Renault 15
To start off, 2004 BMW M6 is newer by 33 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 4,998 cc (10 cylinders), 2004 BMW M6 is equipped with a bigger engine. In terms of performance, 2004 BMW M6 (500 HP @ 7750 RPM) has 411 more horse power than 1971 Renault 15. (89 HP @ 5500 RPM). In normal driving conditions, 2004 BMW M6 should accelerate faster than 1971 Renault 15. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW M6 weights approximately 765 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, 2004 BMW M6 (520 Nm @ 6100 RPM) has 395 more torque (in Nm) than 1971 Renault 15. (125 Nm @ 3000 RPM). This means 2004 BMW M6 will have an easier job in driving up hills or pulling heavy equipment than 1971 Renault 15.
Compare all specifications:
| 2004 BMW M6 | 1971 Renault 15 | |
| Make | BMW | Renault |
| Model | M6 | 15 |
| Year Released | 2004 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 4998 cc | 1565 cc |
| Engine Cylinders | 10 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 500 HP | 89 HP |
| Engine RPM | 7750 RPM | 5500 RPM |
| Torque | 520 Nm | 125 Nm |
| Torque RPM | 6100 RPM | 3000 RPM |
| Engine Bore Size | 92 mm | 77 mm |
| Engine Stroke Size | 75.2 mm | 84 mm |
| Engine Compression Ratio | 12.0:1 | 9.3:1 |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1785 kg | 1020 kg |
| Vehicle Length | 4880 mm | 4260 mm |
| Vehicle Width | 1860 mm | 1640 mm |
| Vehicle Height | 1380 mm | 1320 mm |
| Wheelbase Size | 2790 mm | 2440 mm |
| Fuel Tank Capacity | 70 L | 38 L |
