2003 Opel Signum vs. 1971 Opel Manta
To start off, 2003 Opel Signum is newer by 32 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 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (175 HP @ 5500 RPM) has 116 more horse power than 1971 Opel Manta. (59 HP @ 5400 RPM). In normal driving conditions, 2003 Opel Signum should accelerate faster than 1971 Opel Manta. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 645 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.
Because 1971 Opel Manta is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1971 Opel Manta. However, in wet, icy, snow, or gravel driving conditions, 2003 Opel Signum, being front wheel drive (FWD), will offer much better control with better grip. 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, 2003 Opel Signum (370 Nm @ 1900 RPM) has 280 more torque (in Nm) than 1971 Opel Manta. (90 Nm @ 3000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1971 Opel Manta.
Compare all specifications:
| 2003 Opel Signum | 1971 Opel Manta | |
| Make | Opel | Opel |
| Model | Signum | Manta |
| Year Released | 2003 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 1196 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 175 HP | 59 HP |
| Engine RPM | 5500 RPM | 5400 RPM |
| Torque | 370 Nm | 90 Nm |
| Torque RPM | 1900 RPM | 3000 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1575 kg | 930 kg |
| Vehicle Length | 4640 mm | 4300 mm |
| Vehicle Width | 1800 mm | 1640 mm |
| Vehicle Height | 1470 mm | 1360 mm |
| Wheelbase Size | 2840 mm | 2440 mm |
