1984 Ford Sierra vs. 1986 Alfa Romeo 90
To start off, 1986 Alfa Romeo 90 is newer by 2 year(s). Which means there will be less support and parts availability for 1984 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1984 Ford Sierra would be higher. At 2,391 cc (4 cylinders), 1986 Alfa Romeo 90 is equipped with a bigger engine. In terms of performance, 1986 Alfa Romeo 90 (109 HP @ 4200 RPM) has 50 more horse power than 1984 Ford Sierra. (59 HP @ 5700 RPM) In normal driving conditions, 1986 Alfa Romeo 90 should accelerate faster than 1984 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1986 Alfa Romeo 90 weights approximately 280 kg more than 1984 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 1986 Alfa Romeo 90 (235 Nm @ 2300 RPM) has 137 more torque (in Nm) than 1984 Ford Sierra. (98 Nm @ 3100 RPM). This means 1986 Alfa Romeo 90 will have an easier job in driving up hills or pulling heavy equipment than 1984 Ford Sierra.
Compare all specifications:
| 1984 Ford Sierra | 1986 Alfa Romeo 90 | |
| Make | Ford | Alfa Romeo |
| Model | Sierra | 90 |
| Year Released | 1984 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 1294 cc | 2391 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 59 HP | 109 HP |
| Engine RPM | 5700 RPM | 4200 RPM |
| Torque | 98 Nm | 235 Nm |
| Torque RPM | 3100 RPM | 2300 RPM |
| Engine Bore Size | 79.1 mm | 92 mm |
| Engine Stroke Size | 66 mm | 90 mm |
| Engine Compression Ratio | 9.0:1 | 22.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 4 doors |
| Vehicle Weight | 970 kg | 1250 kg |
| Vehicle Length | 4400 mm | 4400 mm |
| Vehicle Width | 1710 mm | 1650 mm |
| Vehicle Height | 1420 mm | 1430 mm |
| Wheelbase Size | 2610 mm | 2520 mm |
| Fuel Tank Capacity | 60 L | 49 L |
