Welsh councils repaired more than 118,000 potholes over the last year, according to a Freedom of Information request by Plaid Cymru.
But a number of local authorities took more than a year to fix non-urgent work.
Isle of Anglesey Council said it repaired 99 per cent of potholes within 24 hours but Caerphilly reported it only repaired 64 per cent of road and pavement potholes within its target time.
Cardiff Council said it repaired more than 16,000.
Across Wales, the equivalent of more than 300 potholes per day were fixed last year.