1991 Renault 21 vs. 2010 Citroen C6
To start off, 2010 Citroen C6 is newer by 19 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 2,720 cc (6 cylinders), 2010 Citroen C6 is equipped with a bigger engine. In terms of performance, 2010 Citroen C6 (201 HP @ 4200 RPM) has 126 more horse power than 1991 Renault 21. (75 HP @ 5000 RPM) In normal driving conditions, 2010 Citroen C6 should accelerate faster than 1991 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2010 Citroen C6 weights approximately 915 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, 2010 Citroen C6 (440 Nm @ 1900 RPM) has 311 more torque (in Nm) than 1991 Renault 21. (129 Nm @ 3250 RPM). This means 2010 Citroen C6 will have an easier job in driving up hills or pulling heavy equipment than 1991 Renault 21. 2010 Citroen C6 has automatic transmission and 1991 Renault 21 has manual transmission. 1991 Renault 21 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2010 Citroen C6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Renault 21 | 2010 Citroen C6 | |
| Make | Renault | Citroen |
| Model | 21 | C6 |
| Year Released | 1991 | 2010 |
| Engine Position | Front | Front |
| Engine Size | 1721 cc | 2720 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 75 HP | 201 HP |
| Engine RPM | 5000 RPM | 4200 RPM |
| Torque | 129 Nm | 440 Nm |
| Torque RPM | 3250 RPM | 1900 RPM |
| Engine Bore Size | 81.1 mm | 81 mm |
| Engine Stroke Size | 83.5 mm | 88 mm |
| Engine Compression Ratio | 9.2:1 | 17.3:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 955 kg | 1870 kg |
| Vehicle Length | 4470 mm | 4910 mm |
| Vehicle Width | 1730 mm | 1870 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2550 mm | 2910 mm |
| Fuel Consumption Overall | 7 L/100km | 8.7 L/100km |
| Fuel Tank Capacity | 55 L | 72 L |
