2008 BMW X5 vs. 1986 Renault 21
To start off, 2008 BMW X5 is newer by 22 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 4,797 cc (8 cylinders), 2008 BMW X5 is equipped with a bigger engine. In terms of performance, 2008 BMW X5 (355 HP @ 6200 RPM) has 268 more horse power than 1986 Renault 21. (87 HP @ 4250 RPM). In normal driving conditions, 2008 BMW X5 should accelerate faster than 1986 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW X5 weights approximately 1065 kg more than 1986 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1986 Renault 21. In wet, icy, snow, or gravel driving conditions, 2008 BMW X5 will offer significantly more control. 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, 2008 BMW X5 (490 Nm @ 3600 RPM) has 305 more torque (in Nm) than 1986 Renault 21. (185 Nm @ 2000 RPM). This means 2008 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1986 Renault 21. 2008 BMW X5 has automatic transmission and 1986 Renault 21 has manual transmission. 1986 Renault 21 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW X5 | 1986 Renault 21 | |
| Make | BMW | Renault |
| Model | X5 | 21 |
| Year Released | 2008 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 4797 cc | 2067 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 355 HP | 87 HP |
| Engine RPM | 6200 RPM | 4250 RPM |
| Torque | 490 Nm | 185 Nm |
| Torque RPM | 3600 RPM | 2000 RPM |
| Engine Bore Size | 93 mm | 86 mm |
| Engine Stroke Size | 88.3 mm | 89 mm |
| Engine Compression Ratio | 11.0:1 | 21.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2200 kg | 1135 kg |
| Vehicle Length | 4670 mm | 4540 mm |
| Vehicle Width | 1880 mm | 1720 mm |
| Vehicle Height | 1710 mm | 1430 mm |
| Wheelbase Size | 2830 mm | 2670 mm |
