The aggregate rating of Viking Mars is build on scorse given by the following portals:
| Aug / 24 | Sep / 24 | Oct / 24 | ||
| cruisetimetables.com | 4.0 / 21 | 4.2 / 21 | 4.2 / 21 | |
| cruisemapper.com | 4.0 / 1 | 4.0 / 1 | 4.0 / 1 | |
| cruiseline.com | 4.5 / 17 | 4.5 / 17 | 4.5 / 17 | |
| cruisecritic.com | 4.4 / 148 | 4.5 / 161 | 4.5 / |
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