1998 Opel Speedster vs. 1978 Porsche 911
To start off, 1998 Opel Speedster is newer by 20 year(s). Which means there will be less support and parts availability for 1978 Porsche 911. In addition, the cost of maintenance, including insurance, on 1978 Porsche 911 would be higher. At 2,994 cc (6 cylinders), 1978 Porsche 911 is equipped with a bigger engine. In terms of performance, 1978 Porsche 911 (185 HP @ 5500 RPM) has 40 more horse power than 1998 Opel Speedster. (145 HP @ 5800 RPM) In normal driving conditions, 1978 Porsche 911 should accelerate faster than 1998 Opel Speedster. With that said, vehicle weight also plays an important factor in acceleration. 1978 Porsche 911 weights approximately 235 kg more than 1998 Opel Speedster. 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, 1978 Porsche 911 (265 Nm @ 4100 RPM) has 62 more torque (in Nm) than 1998 Opel Speedster. (203 Nm @ 4000 RPM). This means 1978 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1998 Opel Speedster.
Compare all specifications:
| 1998 Opel Speedster | 1978 Porsche 911 | |
| Make | Opel | Porsche |
| Model | Speedster | 911 |
| Year Released | 1998 | 1978 |
| Body Type | Convertible | Coupe |
| Engine Position | Middle | Rear |
| Engine Size | 2198 cc | 2994 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 145 HP | 185 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 203 Nm | 265 Nm |
| Torque RPM | 4000 RPM | 4100 RPM |
| Engine Compression Ratio | 10.0:1 | 8.5:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 945 kg | 1180 kg |
| Vehicle Length | 3790 mm | 4300 mm |
| Vehicle Width | 1710 mm | 1660 mm |
| Vehicle Height | 1120 mm | 1330 mm |
| Wheelbase Size | 2340 mm | 2280 mm |
| Fuel Tank Capacity | 60 L | 80 L |
