1984 Ford Sierra vs. 1971 Opel GT
To start off, 1984 Ford Sierra is newer by 13 year(s). Which means there will be less support and parts availability for 1971 Opel GT. In addition, the cost of maintenance, including insurance, on 1971 Opel GT would be higher. At 1,900 cc (4 cylinders), 1971 Opel GT is equipped with a bigger engine. In terms of performance, 1971 Opel GT (89 HP @ 5200 RPM) has 14 more horse power than 1984 Ford Sierra. (75 HP @ 5300 RPM) In normal driving conditions, 1971 Opel GT should accelerate faster than 1984 Ford Sierra.
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, 1971 Opel GT (152 Nm @ 3400 RPM) has 33 more torque (in Nm) than 1984 Ford Sierra. (119 Nm @ 2900 RPM). This means 1971 Opel GT will have an easier job in driving up hills or pulling heavy equipment than 1984 Ford Sierra.
Compare all specifications:
| 1984 Ford Sierra | 1971 Opel GT | |
| Make | Ford | Opel |
| Model | Sierra | GT |
| Year Released | 1984 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 1608 cc | 1900 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 89 HP |
| Engine RPM | 5300 RPM | 5200 RPM |
| Torque | 119 Nm | 152 Nm |
| Torque RPM | 2900 RPM | 3400 RPM |
| Engine Bore Size | 87.8 mm | 93 mm |
| Engine Stroke Size | 66 mm | 69.8 mm |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Length | 4500 mm | 4120 mm |
| Vehicle Width | 1720 mm | 1590 mm |
| Vehicle Height | 1450 mm | 1230 mm |
| Wheelbase Size | 2610 mm | 2440 mm |
| Fuel Tank Capacity | 60 L | 53 L |
