2007 BMW Z4 vs. 1981 Renault 9
To start off, 2007 BMW Z4 is newer by 26 year(s). Which means there will be less support and parts availability for 1981 Renault 9. In addition, the cost of maintenance, including insurance, on 1981 Renault 9 would be higher. At 2,171 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (168 HP @ 6250 RPM) has 121 more horse power than 1981 Renault 9. (47 HP @ 5250 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 1981 Renault 9. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 weights approximately 505 kg more than 1981 Renault 9. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 2007 BMW Z4 | 1981 Renault 9 | |
| Make | BMW | Renault |
| Model | Z4 | 9 |
| Year Released | 2007 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 1108 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 168 HP | 47 HP |
| Engine RPM | 6250 RPM | 5250 RPM |
| Torque RPM | 3500 RPM | 2500 RPM |
| Engine Bore Size | 80 mm | 70 mm |
| Engine Stroke Size | 72 mm | 72 mm |
| Engine Compression Ratio | 10.8:1 | 9.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1325 kg | 820 kg |
| Vehicle Length | 4100 mm | 4070 mm |
| Vehicle Width | 1790 mm | 1660 mm |
| Vehicle Height | 1310 mm | 1410 mm |
| Wheelbase Size | 2500 mm | 2490 mm |
| Fuel Tank Capacity | 55 L | 38 L |
