Fiat 138 AR.000, Engine
| Engine capacity | 1,585 cm³ |
| Maximum power (range), hp | 105 |
| Fuel used | Petrol |
| Fuel consumption, l/100 km | 8.8 |
| Engine type | In-line, 4-cylinder |
| Valve drive | DOHC |
| Number of valves per cylinder (range) | 4 |
| Engine capacity | 1,585 cm³ |
| Maximum power (range), hp | 105 |
| Fuel used | Petrol |
| Fuel consumption, l/100 km | 8.8 |
| Engine type | In-line, 4-cylinder |
| Valve drive | DOHC |
| Number of valves per cylinder (range) | 4 |