1988 Opel Omega vs. 1971 Riley 4
To start off, 1988 Opel Omega is newer by 17 year(s). Which means there will be less support and parts availability for 1971 Riley 4. In addition, the cost of maintenance, including insurance, on 1971 Riley 4 would be higher. At 1,796 cc (4 cylinders), 1988 Opel Omega is equipped with a bigger engine. In terms of performance, 1988 Opel Omega (89 HP @ 5200 RPM) has 22 more horse power than 1971 Riley 4. (67 HP @ 5000 RPM). In normal driving conditions, 1988 Opel Omega should accelerate faster than 1971 Riley 4. With that said, vehicle weight also plays an important factor in acceleration. 1988 Opel Omega weights approximately 52 kg more than 1971 Riley 4. 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, 1988 Opel Omega (152 Nm @ 3400 RPM) has 31 more torque (in Nm) than 1971 Riley 4. (121 Nm @ 2500 RPM). This means 1988 Opel Omega will have an easier job in driving up hills or pulling heavy equipment than 1971 Riley 4.
Compare all specifications:
| 1988 Opel Omega | 1971 Riley 4 | |
| Make | Opel | Riley |
| Model | Omega | 4 |
| Year Released | 1988 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 1622 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 89 HP | 67 HP |
| Engine RPM | 5200 RPM | 5000 RPM |
| Torque | 152 Nm | 121 Nm |
| Torque RPM | 3400 RPM | 2500 RPM |
| Engine Bore Size | 84.8 mm | 76.3 mm |
| Engine Stroke Size | 79.5 mm | 88.9 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Vehicle Weight | 1200 kg | 1148 kg |
| Vehicle Length | 4740 mm | 4540 mm |
| Vehicle Width | 1780 mm | 1620 mm |
| Vehicle Height | 1490 mm | 1510 mm |
| Wheelbase Size | 2740 mm | 2530 mm |
