1958 Riley 4 vs. 1981 Zastava 850 K
To start off, 1981 Zastava 850 K is newer by 23 year(s). Which means there will be less support and parts availability for 1958 Riley 4. In addition, the cost of maintenance, including insurance, on 1958 Riley 4 would be higher. At 1,489 cc (4 cylinders), 1958 Riley 4 is equipped with a bigger engine. In terms of performance, 1958 Riley 4 (63 HP @ 4800 RPM) has 28 more horse power than 1981 Zastava 850 K. (35 HP @ 5400 RPM). In normal driving conditions, 1958 Riley 4 should accelerate faster than 1981 Zastava 850 K. With that said, vehicle weight also plays an important factor in acceleration. 1958 Riley 4 weights approximately 285 kg more than 1981 Zastava 850 K. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1958 Riley 4 | 1981 Zastava 850 K | |
| Make | Riley | Zastava |
| Model | 4 | 850 K |
| Year Released | 1958 | 1981 |
| Engine Size | 1489 cc | 848 cc |
| Horse Power | 63 HP | 35 HP |
| Engine RPM | 4800 RPM | 5400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1140 kg | 855 kg |
| Vehicle Length | 4530 mm | 3740 mm |
| Vehicle Width | 1620 mm | 1490 mm |
| Vehicle Height | 1530 mm | 1700 mm |
| Wheelbase Size | 2530 mm | 2010 mm |
