2008 BMW 545 vs. 1991 Renault 21
To start off, 2008 BMW 545 is newer by 17 year(s). Which means there will be less support and parts availability for 1991 Renault 21. In addition, the cost of maintenance, including insurance, on 1991 Renault 21 would be higher. At 4,398 cc (8 cylinders), 2008 BMW 545 is equipped with a bigger engine. In terms of performance, 2008 BMW 545 (328 HP @ 6100 RPM) has 253 more horse power than 1991 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 2008 BMW 545 should accelerate faster than 1991 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 545 weights approximately 1020 kg more than 1991 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 BMW 545 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 2008 BMW 545. However, in wet, icy, snow, or gravel driving conditions, 1991 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, 2008 BMW 545 (450 Nm @ 3600 RPM) has 321 more torque (in Nm) than 1991 Renault 21. (129 Nm @ 3250 RPM). This means 2008 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 1991 Renault 21.
Compare all specifications:
| 2008 BMW 545 | 1991 Renault 21 | |
| Make | BMW | Renault |
| Model | 545 | 21 |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1721 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 328 HP | 75 HP |
| Engine RPM | 6100 RPM | 5000 RPM |
| Torque | 450 Nm | 129 Nm |
| Torque RPM | 3600 RPM | 3250 RPM |
| Engine Bore Size | 92 mm | 81.1 mm |
| Engine Stroke Size | 82.7 mm | 83.5 mm |
| Engine Compression Ratio | 10.0:1 | 9.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1975 kg | 955 kg |
| Vehicle Length | 4850 mm | 4470 mm |
| Vehicle Width | 1850 mm | 1730 mm |
| Vehicle Height | 1500 mm | 1430 mm |
| Wheelbase Size | 2840 mm | 2550 mm |
| Fuel Consumption Overall | 11.3 L/100km | 7 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
