On Rotten Tomatoes, the first season has a 90% approval rating with an average score of 8/10 based on 39 reviews, with a critical consensus of, ""Six Feet Under"s unusual setting provides a perfect backdrop for the macabre meditations on mortality made by its brilliant, brooding cast." The second season has a 79% approval rating with an average score of 9.33/10 based on 14 reviews, with a critical consensus of, ""Six Feet Under"s deliberately paced second season is less endearing than the first, but the engaging ensemble remain reason enough to watch." The third season has a 90% approval rating with an average score of 7.56/10 based on 20 reviews, with a critical consensus of, ""Six Feet Under"s third season dials down the comedy in favor of creepier narratives – a challenge its cast is more than up to." The fourth season has a 50% approval rating with an average score of 5.58/10 based on 10 reviews, with a critical consensus of, ""Six Feet Under" overreaches in its fourth season, with twists and story arcs that feel more contrived than compelling, though its willingness to venture boldly into the dark also proves occasionally exhilarating." The fifth season has a 97% approval rating with an average score of 8.86/10 based on 37 reviews, with a critical consensus of, ""Six Feet Under" offers a fitting end for the Fishers by concluding the way it began: an unexpectedly beautiful rumination on life, death and grief."