Metro Trains has been voted the worst city rail system in the country for the fifth year running, with aggrieved commuters singling out the myki ticketing system as the biggest problem.

A nationwide satisfaction survey rating service reliability, trip comfort, ticketing, timetables, and station and train cleanliness has found Melbourne passengers are the most dissatisfied.

Topping the list of grievances was the ticketing system, overcrowding and inadequate security on trains and at Melbourne stations. More than half of passengers reported experiencing delays often, and 50 per cent said they regularly witnessed anti-social behaviour on the network. Only 42 per cent of passengers said they felt safe catching trains at night.

Consumer research firm Canstar Blue surveyed 6000 rail users in Melbourne, Sydney, Perth, Adelaide and Queensland to compare train passenger satisfaction. For the fifth year in a row, Metro came in last with an overall satisfaction rating of three stars. TransPerth was rated highest overall with five stars, while Adelaide Metro, Sydney Trains and Queensland Rail all scored four stars overall.