1990 Renault 21 vs. 2009 Fiat Siena
To start off, 2009 Fiat Siena is newer by 19 year(s). Which means there will be less support and parts availability for 1990 Renault 21. In addition, the cost of maintenance, including insurance, on 1990 Renault 21 would be higher. At 1,720 cc (4 cylinders), 1990 Renault 21 is equipped with a bigger engine. In terms of performance, 2009 Fiat Siena (106 HP @ 5500 RPM) has 31 more horse power than 1990 Renault 21. (75 HP @ 5000 RPM) In normal driving conditions, 2009 Fiat Siena should accelerate faster than 1990 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2009 Fiat Siena weights approximately 140 kg more than 1990 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2009 Fiat Siena (140 Nm @ 4000 RPM) has 11 more torque (in Nm) than 1990 Renault 21. (129 Nm @ 3250 RPM). This means 2009 Fiat Siena will have an easier job in driving up hills or pulling heavy equipment than 1990 Renault 21.
Compare all specifications:
| 1990 Renault 21 | 2009 Fiat Siena | |
| Make | Renault | Fiat |
| Model | 21 | Siena |
| Year Released | 1990 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 1720 cc | 1581 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 75 HP | 106 HP |
| Engine RPM | 5000 RPM | 5500 RPM |
| Torque | 129 Nm | 140 Nm |
| Torque RPM | 3250 RPM | 4000 RPM |
| Engine Bore Size | 81 mm | 86.5 mm |
| Engine Stroke Size | 83.5 mm | 67.4 mm |
| Engine Compression Ratio | 9.2:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 955 kg | 1095 kg |
| Vehicle Length | 4470 mm | 3550 mm |
| Vehicle Width | 1730 mm | 1640 mm |
| Vehicle Height | 1430 mm | 1490 mm |
| Wheelbase Size | 2550 mm | 2370 mm |
| Fuel Consumption Overall | 7 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 55 L | 47 L |
