1978 Porsche 924 vs. 1991 Porsche 928
To start off, 1991 Porsche 928 is newer by 13 year(s). Which means there will be less support and parts availability for 1978 Porsche 924. In addition, the cost of maintenance, including insurance, on 1978 Porsche 924 would be higher. At 4,663 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (306 HP @ 5900 RPM) has 136 more horse power than 1978 Porsche 924. (170 HP @ 5500 RPM) In normal driving conditions, 1991 Porsche 928 should accelerate faster than 1978 Porsche 924. With that said, vehicle weight also plays an important factor in acceleration. 1991 Porsche 928 weights approximately 350 kg more than 1978 Porsche 924. 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, 1991 Porsche 928 (408 Nm @ 4100 RPM) has 163 more torque (in Nm) than 1978 Porsche 924. (245 Nm @ 3500 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 1978 Porsche 924.
Compare all specifications:
| 1978 Porsche 924 | 1991 Porsche 928 | |
| Make | Porsche | Porsche |
| Model | 924 | 928 |
| Year Released | 1978 | 1991 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 4663 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 170 HP | 306 HP |
| Engine RPM | 5500 RPM | 5900 RPM |
| Torque | 245 Nm | 408 Nm |
| Torque RPM | 3500 RPM | 4100 RPM |
| Engine Bore Size | 86.6 mm | 97 mm |
| Engine Stroke Size | 84.4 mm | 78.9 mm |
| Engine Compression Ratio | 7.5:1 | 10.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1180 kg | 1530 kg |
| Vehicle Length | 4220 mm | 4530 mm |
| Vehicle Width | 1660 mm | 2060 mm |
| Vehicle Height | 1270 mm | 1290 mm |
| Wheelbase Size | 2410 mm | 2510 mm |
| Fuel Tank Capacity | 61 L | 76 L |
