Fuel tank: 6 of 6 variants rated.
Renault 20 TX tops the Renault 20 ranking by Fuel tank, at 67 L (17.7 gal US).
Across 6 ranked variants, Fuel tank spans from 67 L (17.7 gal US) to 67 L (17.7 gal US).
| # | Variant | Year | Body | Fuel | Fuel tank |
|---|---|---|---|---|---|
| 1 | Renault 20 TX+1 | 1980 | Hatchback | Petrol | 67 L (17.7 gal US) |
| 2 | Renault 20 TD | 1980 | Hatchback | Diesel | 67 L (17.7 gal US) |
| 3 | Renault 20 GTD | 1980 | Hatchback | Diesel | 67 L (17.7 gal US) |
| 4 | Renault 20 TL | 1977 | Hatchback | Petrol | 67 L (17.7 gal US) |
| 5 | Renault 20 LS | 1977 | Hatchback | Petrol | 67 L (17.7 gal US) |
| 6 | Renault 20 TS+1 | 1977 | Hatchback | Petrol | 67 L (17.7 gal US) |