1971 Mazda Cosmo vs. 2005 Opel Signum
To start off, 2005 Opel Signum is newer by 34 year(s). Which means there will be less support and parts availability for 1971 Mazda Cosmo. In addition, the cost of maintenance, including insurance, on 1971 Mazda Cosmo would be higher. At 2,958 cc (6 cylinders), 2005 Opel Signum is equipped with a bigger engine. In terms of performance, 2005 Opel Signum (175 HP @ 4000 RPM) has 82 more horse power than 1971 Mazda Cosmo. (93 HP @ 7000 RPM) In normal driving conditions, 2005 Opel Signum should accelerate faster than 1971 Mazda Cosmo. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 730 kg more than 1971 Mazda Cosmo. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Opel Signum (370 Nm @ 1900 RPM) has 237 more torque (in Nm) than 1971 Mazda Cosmo. (133 Nm @ 3500 RPM). This means 2005 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1971 Mazda Cosmo.
Compare all specifications:
| 1971 Mazda Cosmo | 2005 Opel Signum | |
| Make | Mazda | Opel |
| Model | Cosmo | Signum |
| Year Released | 1971 | 2005 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1964 cc | 2958 cc |
| Horse Power | 93 HP | 175 HP |
| Engine RPM | 7000 RPM | 4000 RPM |
| Torque | 133 Nm | 370 Nm |
| Torque RPM | 3500 RPM | 1900 RPM |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 940 kg | 1670 kg |
| Vehicle Length | 4150 mm | 4640 mm |
| Vehicle Width | 1600 mm | 1800 mm |
| Vehicle Height | 1170 mm | 1470 mm |
| Wheelbase Size | 2210 mm | 2620 mm |
