2007 Alfa Romeo 147 vs. 1991 Renault 21
To start off, 2007 Alfa Romeo 147 is newer by 16 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 1,908 cc (4 cylinders), 2007 Alfa Romeo 147 is equipped with a bigger engine. In terms of performance, 2007 Alfa Romeo 147 (148 HP @ 4000 RPM) has 73 more horse power than 1991 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 2007 Alfa Romeo 147 should accelerate faster than 1991 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2007 Alfa Romeo 147 weights approximately 355 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.
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, 2007 Alfa Romeo 147 (305 Nm @ 2000 RPM) has 176 more torque (in Nm) than 1991 Renault 21. (129 Nm @ 3250 RPM). This means 2007 Alfa Romeo 147 will have an easier job in driving up hills or pulling heavy equipment than 1991 Renault 21.
Compare all specifications:
| 2007 Alfa Romeo 147 | 1991 Renault 21 | |
| Make | Alfa Romeo | Renault |
| Model | 147 | 21 |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1908 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 148 HP | 75 HP |
| Engine RPM | 4000 RPM | 5000 RPM |
| Torque | 305 Nm | 129 Nm |
| Torque RPM | 2000 RPM | 3250 RPM |
| Engine Bore Size | 82 mm | 81.1 mm |
| Engine Stroke Size | 90.4 mm | 83.5 mm |
| Engine Compression Ratio | 18.0:1 | 9.2:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1310 kg | 955 kg |
| Vehicle Length | 4230 mm | 4470 mm |
| Vehicle Width | 1740 mm | 1730 mm |
| Vehicle Height | 1450 mm | 1430 mm |
| Wheelbase Size | 2550 mm | 2550 mm |
| Fuel Consumption Overall | 5.9 L/100km | 7 L/100km |
| Fuel Tank Capacity | 60 L | 55 L |
