2007 BMW 550 vs. 1981 Renault 9
To start off, 2007 BMW 550 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 4,799 cc (8 cylinders), 2007 BMW 550 is equipped with a bigger engine. In terms of performance, 2007 BMW 550 (362 HP @ 6300 RPM) has 308 more horse power than 1981 Renault 9. (54 HP @ 4800 RPM). In normal driving conditions, 2007 BMW 550 should accelerate faster than 1981 Renault 9. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 550 weights approximately 745 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.
Let's talk about torque, 2007 BMW 550 (490 Nm @ 3400 RPM) has 386 more torque (in Nm) than 1981 Renault 9. (104 Nm @ 2250 RPM). This means 2007 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 1981 Renault 9.
Compare all specifications:
| 2007 BMW 550 | 1981 Renault 9 | |
| Make | BMW | Renault |
| Model | 550 | 9 |
| Year Released | 2007 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 1595 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 362 HP | 54 HP |
| Engine RPM | 6300 RPM | 4800 RPM |
| Torque | 490 Nm | 104 Nm |
| Torque RPM | 3400 RPM | 2250 RPM |
| Engine Bore Size | 93 mm | 78 mm |
| Engine Stroke Size | 88.3 mm | 83.5 mm |
| Engine Compression Ratio | 10.5:1 | 22.5:1 |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1660 kg | 915 kg |
| Vehicle Length | 4850 mm | 4070 mm |
| Vehicle Width | 1470 mm | 1660 mm |
| Vehicle Height | 1850 mm | 1410 mm |
| Wheelbase Size | 2890 mm | 2490 mm |
| Fuel Tank Capacity | 70 L | 38 L |
