1991 Citroen BX vs. 2006 Smart ForFour
To start off, 2006 Smart ForFour is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Citroen BX. In addition, the cost of maintenance, including insurance, on 1991 Citroen BX would be higher. At 1,499 cc (4 cylinders), 2006 Smart ForFour is equipped with a bigger engine. In terms of performance, 2006 Smart ForFour (108 HP @ 6000 RPM) has 37 more horse power than 1991 Citroen BX. (71 HP @ 5500 RPM) In normal driving conditions, 2006 Smart ForFour should accelerate faster than 1991 Citroen BX. With that said, vehicle weight also plays an important factor in acceleration. 2006 Smart ForFour weights approximately 48 kg more than 1991 Citroen BX. 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, 2006 Smart ForFour (145 Nm @ 4000 RPM) has 35 more torque (in Nm) than 1991 Citroen BX. (110 Nm @ 3400 RPM). This means 2006 Smart ForFour will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen BX. 2006 Smart ForFour has automatic transmission and 1991 Citroen BX has manual transmission. 1991 Citroen BX will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Smart ForFour will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Citroen BX | 2006 Smart ForFour | |
| Make | Citroen | Smart |
| Model | BX | ForFour |
| Year Released | 1991 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1358 cc | 1499 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 71 HP | 108 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 110 Nm | 145 Nm |
| Torque RPM | 3400 RPM | 4000 RPM |
| Engine Bore Size | 75 mm | 75.5 mm |
| Engine Stroke Size | 77 mm | 84.8 mm |
| Engine Compression Ratio | 10.2:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 930 kg | 978 kg |
| Vehicle Length | 4400 mm | 3760 mm |
| Vehicle Width | 1690 mm | 1690 mm |
| Vehicle Height | 1440 mm | 1460 mm |
| Wheelbase Size | 2660 mm | 2510 mm |
| Fuel Tank Capacity | 66 L | 47 L |
