2007 BMW 525 vs. 1986 Renault 21
To start off, 2007 BMW 525 is newer by 21 year(s). Which means there will be less support and parts availability for 1986 Renault 21. In addition, the cost of maintenance, including insurance, on 1986 Renault 21 would be higher. At 2,497 cc (6 cylinders), 2007 BMW 525 is equipped with a bigger engine. In terms of performance, 2007 BMW 525 (215 HP @ 6500 RPM) has 40 more horse power than 1986 Renault 21. (175 HP @ 5200 RPM). In normal driving conditions, 2007 BMW 525 should accelerate faster than 1986 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 1986 Renault 21 weights approximately 65 kg more than 2007 BMW 525.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1986 Renault 21 (275 Nm @ 3000 RPM) has 24 more torque (in Nm) than 2007 BMW 525. (251 Nm @ 2750 RPM). This means 1986 Renault 21 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 525.
Compare all specifications:
| 2007 BMW 525 | 1986 Renault 21 | |
| Make | BMW | Renault |
| Model | 525 | 21 |
| Year Released | 2007 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 215 HP | 175 HP |
| Engine RPM | 6500 RPM | 5200 RPM |
| Torque | 251 Nm | 275 Nm |
| Torque RPM | 2750 RPM | 3000 RPM |
| Engine Bore Size | 78.8 mm | 88 mm |
| Engine Stroke Size | 82 mm | 82 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1280 kg | 1345 kg |
| Vehicle Length | 4850 mm | 4540 mm |
| Vehicle Width | 1850 mm | 1730 mm |
| Vehicle Height | 1500 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2670 mm |
