1974 Alfa Romeo Giulia vs. 1971 Opel Manta
To start off, 1974 Alfa Romeo Giulia is newer by 3 year(s). Which means there will be less support and parts availability for 1971 Opel Manta. In addition, the cost of maintenance, including insurance, on 1971 Opel Manta would be higher. At 1,290 cc (4 cylinders), 1974 Alfa Romeo Giulia is equipped with a bigger engine. In terms of performance, 1974 Alfa Romeo Giulia (81 HP) has 22 more horse power than 1971 Opel Manta. (59 HP). In normal driving conditions, 1974 Alfa Romeo Giulia should accelerate faster than 1971 Opel Manta. With that said, vehicle weight also plays an important factor in acceleration. 1974 Alfa Romeo Giulia weights approximately 118 kg more than 1971 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, 1974 Alfa Romeo Giulia (105 Nm @ 4900 RPM) has 15 more torque (in Nm) than 1971 Opel Manta. (90 Nm @ 3000 RPM). This means 1974 Alfa Romeo Giulia will have an easier job in driving up hills or pulling heavy equipment than 1971 Opel Manta.
Compare all specifications:
| 1974 Alfa Romeo Giulia | 1971 Opel Manta | |
| Make | Alfa Romeo | Opel |
| Model | Giulia | Manta |
| Year Released | 1974 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 1290 cc | 1196 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 81 HP | 59 HP |
| Torque | 105 Nm | 90 Nm |
| Torque RPM | 4900 RPM | 3000 RPM |
| Engine Bore Size | 74 mm | 79 mm |
| Engine Stroke Size | 75 mm | 61 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1048 kg | 930 kg |
| Vehicle Length | 4170 mm | 4300 mm |
| Vehicle Width | 1570 mm | 1640 mm |
| Vehicle Height | 1440 mm | 1360 mm |
| Wheelbase Size | 2460 mm | 2440 mm |
