1977 Alfa Romeo Giulietta vs. 1978 Opel Manta
To start off, 1978 Opel Manta is newer by 1 year(s). Which means there will be less support and parts availability for 1977 Alfa Romeo Giulietta. In addition, the cost of maintenance, including insurance, on 1977 Alfa Romeo Giulietta would be higher. At 1,979 cc (4 cylinders), 1978 Opel Manta is equipped with a bigger engine. In terms of performance, 1977 Alfa Romeo Giulietta (108 HP @ 5600 RPM) has 8 more horse power than 1978 Opel Manta. (100 HP @ 5400 RPM). In normal driving conditions, 1977 Alfa Romeo Giulietta should accelerate faster than 1978 Opel Manta. With that said, vehicle weight also plays an important factor in acceleration. 1977 Alfa Romeo Giulietta weights approximately 20 kg more than 1978 Opel Manta. 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, 1977 Alfa Romeo Giulietta (144 Nm @ 4300 RPM) has 9 more torque (in Nm) than 1978 Opel Manta. (135 Nm @ 3800 RPM). This means 1977 Alfa Romeo Giulietta will have an easier job in driving up hills or pulling heavy equipment than 1978 Opel Manta.
Compare all specifications:
| 1977 Alfa Romeo Giulietta | 1978 Opel Manta | |
| Make | Alfa Romeo | Opel |
| Model | Giulietta | Manta |
| Year Released | 1977 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 1570 cc | 1979 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 108 HP | 100 HP |
| Engine RPM | 5600 RPM | 5400 RPM |
| Torque | 144 Nm | 135 Nm |
| Torque RPM | 4300 RPM | 3800 RPM |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1070 kg | 1050 kg |
| Vehicle Length | 4220 mm | 4460 mm |
| Vehicle Width | 1660 mm | 1680 mm |
| Vehicle Height | 1410 mm | 1340 mm |
| Wheelbase Size | 2520 mm | 2520 mm |
| Fuel Tank Capacity | 53 L | 50 L |
