2009 Ford Flex vs. 1990 Renault 21
To start off, 2009 Ford Flex 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 3,496 cc (6 cylinders), 2009 Ford Flex is equipped with a bigger engine. In terms of performance, 2009 Ford Flex (262 HP @ 6250 RPM) has 187 more horse power than 1990 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 2009 Ford Flex should accelerate faster than 1990 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2009 Ford Flex weights approximately 11 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 Ford Flex (336 Nm @ 4500 RPM) has 207 more torque (in Nm) than 1990 Renault 21. (129 Nm @ 3250 RPM). This means 2009 Ford Flex will have an easier job in driving up hills or pulling heavy equipment than 1990 Renault 21. 2009 Ford Flex has automatic transmission and 1990 Renault 21 has manual transmission. 1990 Renault 21 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Ford Flex will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Ford Flex | 1990 Renault 21 | |
| Make | Ford | Renault |
| Model | Flex | 21 |
| Year Released | 2009 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 3496 cc | 1720 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 262 HP | 75 HP |
| Engine RPM | 6250 RPM | 5000 RPM |
| Torque | 336 Nm | 129 Nm |
| Torque RPM | 4500 RPM | 3250 RPM |
| Engine Compression Ratio | 10.0:1 | 9.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 966 kg | 955 kg |
| Vehicle Length | 5130 mm | 4470 mm |
| Vehicle Width | 1930 mm | 1730 mm |
| Vehicle Height | 1730 mm | 1430 mm |
| Wheelbase Size | 3000 mm | 2550 mm |
| Fuel Consumption Overall | 12.4 L/100km | 7 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
