Fuel tank: 14 of 14 variants rated.
Fiat Regata 90 i.e. S tops the Fiat Regata ranking by Fuel tank, at 55 L (14.5 gal US).
Across 14 ranked variants, Fuel tank spans from 55 L (14.5 gal US) to 55 L (14.5 gal US).
| # | Variant | Year | Body | Fuel | Fuel tank |
|---|---|---|---|---|---|
| 1 | Fiat Regata 90 i.e. S | 1988 | Sedan | Petrol | 55 L (14.5 gal US) |
| 2 | Fiat Regata 75 i.e. | 1987 | Sedan | Petrol | 55 L (14.5 gal US) |
| 3 | Fiat Regata Weekend Diesel S | 1986 | Wagon | Diesel | 55 L (14.5 gal US) |
| 4 | Fiat Regata 100 i.e. S | 1986 | Sedan | Petrol | 55 L (14.5 gal US) |
| 5 | Fiat Regata Turbo Diesel S | 1986 | Sedan | Diesel | 55 L (14.5 gal US) |
| 6 | Fiat Regata Weekend 70 | 1985 | Wagon | Petrol | 55 L (14.5 gal US) |
| 7 | Fiat Regata Weekend 85 | 1985 | Wagon | Petrol | 55 L (14.5 gal US) |
| 8 | Fiat Regata Weekend Diesel | 1985 | Wagon | Diesel | 55 L (14.5 gal US) |
| 9 | Fiat Regata 70+1 | 1984 | Sedan | Petrol | 55 L (14.5 gal US) |
| 10 | Fiat Regata 85 | 1984 | Sedan | Petrol | 55 L (14.5 gal US) |
| 11 | Fiat Regata 85 S+1 | 1984 | Sedan | Petrol | 55 L (14.5 gal US) |
| 12 | Fiat Regata 100 S | 1984 | Sedan | Petrol | 55 L (14.5 gal US) |
| 13 | Fiat Regata Diesel | 1984 | Sedan | Diesel | 55 L (14.5 gal US) |
| 14 | Fiat Regata Diesel S | 1984 | Sedan | Diesel | 55 L (14.5 gal US) |