1975 Alfa Romeo Alfetta vs. 1999 Daihatsu Sirion
To start off, 1999 Daihatsu Sirion is newer by 24 year(s). Which means there will be less support and parts availability for 1975 Alfa Romeo Alfetta. In addition, the cost of maintenance, including insurance, on 1975 Alfa Romeo Alfetta would be higher. At 1,570 cc (4 cylinders), 1975 Alfa Romeo Alfetta is equipped with a bigger engine. In terms of performance, 1975 Alfa Romeo Alfetta (108 HP @ 5600 RPM) has 55 more horse power than 1999 Daihatsu Sirion. (53 HP @ 5200 RPM). In normal driving conditions, 1975 Alfa Romeo Alfetta should accelerate faster than 1999 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 1975 Alfa Romeo Alfetta weights approximately 190 kg more than 1999 Daihatsu Sirion. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 Daihatsu Sirion is four wheel drive (4WD), it will have significant more traction and grip than 1975 Alfa Romeo Alfetta. In wet, icy, snow, or gravel driving conditions, 1999 Daihatsu Sirion will offer significantly more control. 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, 1975 Alfa Romeo Alfetta (142 Nm @ 4300 RPM) has 54 more torque (in Nm) than 1999 Daihatsu Sirion. (88 Nm @ 3600 RPM). This means 1975 Alfa Romeo Alfetta will have an easier job in driving up hills or pulling heavy equipment than 1999 Daihatsu Sirion.
Compare all specifications:
| 1975 Alfa Romeo Alfetta | 1999 Daihatsu Sirion | |
| Make | Alfa Romeo | Daihatsu |
| Model | Alfetta | Sirion |
| Year Released | 1975 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 1570 cc | 988 cc |
| Engine Cylinders | 4 cylinders | 3 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 108 HP | 53 HP |
| Engine RPM | 5600 RPM | 5200 RPM |
| Torque | 142 Nm | 88 Nm |
| Torque RPM | 4300 RPM | 3600 RPM |
| Engine Bore Size | 78 mm | 71.9 mm |
| Engine Stroke Size | 82 mm | 81 mm |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1080 kg | 890 kg |
| Vehicle Length | 4290 mm | 3680 mm |
| Vehicle Width | 1620 mm | 1600 mm |
| Vehicle Height | 1440 mm | 1460 mm |
| Wheelbase Size | 2520 mm | 2350 mm |
| Fuel Tank Capacity | 49 L | 37 L |
