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.
Welsh councils face a combined shortfall of £2m from their budgets for repairing roads, according to figures released today.
The report shows that in 2012:
- 156,000 potholes were filled
- £7.4 million was spent filling potholes
- £1.8 million was paid in compensation claims to road users
- 2,750 days of staff time was spent working on damage claims
Welsh councils paid £1.8 million pounds out in compensation claims for road users last year.
The annual Local Authority Road Maintenance Survey says two thirds of roads were badly affected by flooding in 2012.
Between them, councils in Wales filled nearly 160,000 potholes.
It's a familiar tale at this time of year and it seems potholes are still causing problems. New figures from the AA show a third of drivers in Wales report damage to their cars.
After last month's snow the surface on some roads is getting worse, with many councils struggling to fix the damage. David Wood reports.
Andrew Loosemore, from the Vale of Glamorgan Council, talks to ITV News about tackling potholes in the region.
Almost a third of people in Wales who were surveyed by AA have had their vehicles damaged because of potholes.
The breakdown company says the problem has been worse this year due to the cold snap followed by wet weather.
Potholes form as water freezes and expands in cracks in the road surface. Passing traffic opens up the damaged road surface and rain washes out loose material, deepening it further.
The results show that tyres and wheels bear the brunt of the impact with 11 per cent of people surveyed reporting a damaged tyre and four per cent sustaining damage to both tyre and wheel.
On average, AA says it costs the councils in Wales £35 to fill one pothole but in the UK millions of pounds are paid out every year in compensation claims.