1975 Mazda RX 4 Coupe vs. 2002 Opel Signum
To start off, 2002 Opel Signum is newer by 27 year(s). Which means there will be less support and parts availability for 1975 Mazda RX 4 Coupe. In addition, the cost of maintenance, including insurance, on 1975 Mazda RX 4 Coupe would be higher. At 2,616 cc (2 cylinders), 1975 Mazda RX 4 Coupe is equipped with a bigger engine. In terms of performance, 1975 Mazda RX 4 Coupe (114 HP @ 6000 RPM) has 14 more horse power than 2002 Opel Signum. (100 HP @ 3120 RPM). In normal driving conditions, 1975 Mazda RX 4 Coupe should accelerate faster than 2002 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2002 Opel Signum weights approximately 485 kg more than 1975 Mazda RX 4 Coupe.
Let's talk about torque, 2002 Opel Signum (230 Nm @ 1500 RPM) has 65 more torque (in Nm) than 1975 Mazda RX 4 Coupe. (165 Nm @ 4000 RPM). This means 2002 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1975 Mazda RX 4 Coupe.
Compare all specifications:
| 1975 Mazda RX 4 Coupe | 2002 Opel Signum | |
| Make | Mazda | Opel |
| Model | RX 4 Coupe | Signum |
| Year Released | 1975 | 2002 |
| Engine Position | Front | Front |
| Engine Size | 2616 cc | 1995 cc |
| Engine Cylinders | 2 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 114 HP | 100 HP |
| Engine RPM | 6000 RPM | 3120 RPM |
| Torque | 165 Nm | 230 Nm |
| Torque RPM | 4000 RPM | 1500 RPM |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1110 kg | 1595 kg |
| Vehicle Length | 4400 mm | 4640 mm |
| Vehicle Width | 1670 mm | 1720 mm |
| Vehicle Height | 1390 mm | 1470 mm |
| Wheelbase Size | 2520 mm | 2610 mm |
