2004 Opel Signum vs. 1981 Renault 18
To start off, 2004 Opel Signum is newer by 23 year(s). Which means there will be less support and parts availability for 1981 Renault 18. In addition, the cost of maintenance, including insurance, on 1981 Renault 18 would be higher. At 2,068 cc (4 cylinders), 1981 Renault 18 is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (173 HP) has 86 more horse power than 1981 Renault 18. (87 HP). In normal driving conditions, 2004 Opel Signum should accelerate faster than 1981 Renault 18.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear 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, 2004 Opel Signum (265 Nm) has 84 more torque (in Nm) than 1981 Renault 18. (181 Nm). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1981 Renault 18.
Compare all specifications:
| 2004 Opel Signum | 1981 Renault 18 | |
| Make | Opel | Renault |
| Model | Signum | 18 |
| Year Released | 2004 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2068 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 173 HP | 87 HP |
| Torque | 265 Nm | 181 Nm |
| Engine Bore Size | 86 mm | 86 mm |
| Engine Stroke Size | 86 mm | 89 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4640 mm | 4470 mm |
| Vehicle Width | 1800 mm | 1710 mm |
| Vehicle Height | 1470 mm | 1410 mm |
