Fuel tank: 6 of 6 variants rated.
Peugeot 604 GTI tops the Peugeot 604 ranking by Fuel tank, at 70 L (18.5 gal US).
Across 6 ranked variants, Fuel tank spans from 70 L (18.5 gal US) to 70 L (18.5 gal US).
| # | Variant | Year | Body | Fuel | Fuel tank |
|---|---|---|---|---|---|
| 1 | Peugeot 604 GTI+1 | 1983 | Sedan | Petrol | 70 L (18.5 gal US) |
| 2 | Peugeot 604 GTD Turbo+1 | 1983 | Sedan | Diesel | 70 L (18.5 gal US) |
| 3 | Peugeot 604 GRD Turbo | 1981 | Sedan | Diesel | 70 L (18.5 gal US) |
| 4 | Peugeot 604 STI+1 | 1980 | Sedan | Petrol | 70 L (18.5 gal US) |
| 5 | Peugeot 604 SRD Turbo+1 | 1980 | Sedan | Diesel | 70 L (18.5 gal US) |
| 6 | Peugeot 604 SL+1 | 1975 | Sedan | Petrol | 70 L (18.5 gal US) |