2009 BMW 745 vs. 1986 Renault 21
To start off, 2009 BMW 745 is newer by 23 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 4,396 cc (8 cylinders), 2009 BMW 745 is equipped with a bigger engine. In terms of performance, 2009 BMW 745 (328 HP @ 6100 RPM) has 208 more horse power than 1986 Renault 21. (120 HP @ 5500 RPM). In normal driving conditions, 2009 BMW 745 should accelerate faster than 1986 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 745 weights approximately 850 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 2009 BMW 745 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2009 BMW 745. However, in wet, icy, snow, or gravel driving conditions, 1986 Renault 21, being front wheel drive (FWD), will offer much better control with better grip. 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, 2009 BMW 745 (450 Nm @ 3600 RPM) has 282 more torque (in Nm) than 1986 Renault 21. (168 Nm @ 4500 RPM). This means 2009 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 1986 Renault 21. 2009 BMW 745 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. 2009 BMW 745 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW 745 | 1986 Renault 21 | |
| Make | BMW | Renault |
| Model | 745 | 21 |
| Year Released | 2009 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 4396 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 328 HP | 120 HP |
| Engine RPM | 6100 RPM | 5500 RPM |
| Torque | 450 Nm | 168 Nm |
| Torque RPM | 3600 RPM | 4500 RPM |
| Engine Bore Size | 92 mm | 88.1 mm |
| Engine Stroke Size | 82.7 mm | 82 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1985 kg | 1135 kg |
| Vehicle Length | 5180 mm | 4650 mm |
| Vehicle Width | 1910 mm | 1720 mm |
| Vehicle Height | 1500 mm | 1430 mm |
| Wheelbase Size | 3140 mm | 2760 mm |
