2008 Daihatsu Sirion vs. 1991 Renault 21
To start off, 2008 Daihatsu Sirion 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 1,721 cc (4 cylinders), 1991 Renault 21 is equipped with a bigger engine. In terms of performance, 2008 Daihatsu Sirion (90 HP @ 6000 RPM) has 15 more horse power than 1991 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 2008 Daihatsu Sirion should accelerate faster than 1991 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 1991 Renault 21 weights approximately 40 kg more than 2008 Daihatsu Sirion.
Because 2008 Daihatsu Sirion is four wheel drive (4WD), it will have significant more traction and grip than 1991 Renault 21. In wet, icy, snow, or gravel driving conditions, 2008 Daihatsu Sirion 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, 1991 Renault 21 (129 Nm @ 3250 RPM) has 9 more torque (in Nm) than 2008 Daihatsu Sirion. (120 Nm @ 4400 RPM). This means 1991 Renault 21 will have an easier job in driving up hills or pulling heavy equipment than 2008 Daihatsu Sirion.
Compare all specifications:
| 2008 Daihatsu Sirion | 1991 Renault 21 | |
| Make | Daihatsu | Renault |
| Model | Sirion | 21 |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1298 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 90 HP | 75 HP |
| Engine RPM | 6000 RPM | 5000 RPM |
| Torque | 120 Nm | 129 Nm |
| Torque RPM | 4400 RPM | 3250 RPM |
| Engine Bore Size | 72 mm | 81 mm |
| Engine Stroke Size | 79.7 mm | 83.5 mm |
| Engine Compression Ratio | 10.0:1 | 9.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Front |
| Vehicle Weight | 980 kg | 1020 kg |
| Vehicle Length | 3610 mm | 4650 mm |
| Vehicle Width | 1670 mm | 1720 mm |
| Vehicle Height | 1560 mm | 1430 mm |
| Wheelbase Size | 2440 mm | 2820 mm |
