Fuel tank: 4 of 4 variants rated.
Mini Roadster Cooper S tops the Mini Roadster ranking by Fuel tank, at 50 L (13.2 gal US).
| # | Variant | Year | Body | Fuel | Fuel tank |
|---|---|---|---|---|---|
| 1 | Mini Roadster Cooper S+1 | 2012 | Convertible | Petrol | 50 L (13.2 gal US) |
| 2 | Mini Roadster John Cooper Works+1 | 2012 | Convertible | Petrol | 50 L (13.2 gal US) |
| 3 | Mini Roadster Cooper+1 | 2012 | Convertible | Petrol | 40 L (10.6 gal US) |
| 4 | Mini Roadster Cooper SD+1 | 2012 | Convertible | Diesel | 40 L (10.6 gal US) |