Nearly 80,000 potholes were filled in London last year
Some £1.3bn is needed to tackle the half a million potholes that blight London's roads, industry experts warn.
The Asphalt Industry Alliance (AIA) said on average there was a pothole in London every 36 yards, causing traffic congestion and increased pollution.
In its annual report, the AIA said it would take more than 10 years to bring the city's roads up to scatch.
The Department for Transport said it had trebled funding for local authorities in England.
But the AIA said better "funding solutions" to tackle the problem such as using money earmarked for infrastructure improvements could solve the problem relatively quickly.
"Vehicles that have to constantly stop and start generate more emissions and with a road opening or pothole in London every 36 yards, free flowing traffic seems like an impossible dream," said the AIA's chairman Mike Linley.
Nearly 80,000 potholes were filled across London last year, the AIA survey found, while nearly £5m was paid out in compensation claims and staff costs.
The survey collects information from local authority highways departments (responsible for 95% of roads) across England and Wales.