2004 BMW Z4 vs. 1971 Renault 15
To start off, 2004 BMW Z4 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 2,171 cc (6 cylinders), 2004 BMW Z4 is equipped with a bigger engine. In terms of performance, 2004 BMW Z4 (168 HP @ 6250 RPM) has 79 more horse power than 1971 Renault 15. (89 HP @ 5500 RPM). In normal driving conditions, 2004 BMW Z4 should accelerate faster than 1971 Renault 15. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW Z4 weights approximately 305 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 Z4 (210 Nm @ 3500 RPM) has 85 more torque (in Nm) than 1971 Renault 15. (125 Nm @ 3000 RPM). This means 2004 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1971 Renault 15.
Compare all specifications:
| 2004 BMW Z4 | 1971 Renault 15 | |
| Make | BMW | Renault |
| Model | Z4 | 15 |
| Year Released | 2004 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 1565 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 168 HP | 89 HP |
| Engine RPM | 6250 RPM | 5500 RPM |
| Torque | 210 Nm | 125 Nm |
| Torque RPM | 3500 RPM | 3000 RPM |
| Engine Compression Ratio | 10.8:1 | 9.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1325 kg | 1020 kg |
| Vehicle Length | 4100 mm | 4260 mm |
| Vehicle Width | 1790 mm | 1640 mm |
| Vehicle Height | 1310 mm | 1320 mm |
| Wheelbase Size | 2500 mm | 2440 mm |
| Fuel Tank Capacity | 55 L | 38 L |
