The M25: Britain's most hated motorway turns 40 Motorists are still complaining about the same problems on the M25, which was built 40 years ago and has become a victim of induced demand. Despite its importance to the British economy, the motorway has become less reliable, causing delays and increased costs for businesses. Britain's infamous M25 motorway turns 40 today and drivers are still complaining about the same problems. Built four decades ago using traffic forecasts drawn up decades earlier and with only three lanes in each direction, the motorway quickly attracted more traffic, becoming a victim of induced demand. M25 reputation as hated stretch of roadRather than relieving congestion around London, the M25 has become a hotbed of endless tailbacks, roadworks, and degrading conditions, earning it a reputation as the nation's most hated stretch of road. Despite providing significant economic benefits by bolstering regional connectivity and cutting journey times, the motorway has become less reliable than ever, with over 80 per cent of van drivers saying it causes delays for the services they provide.The consequences can be costly, including late deliveries, higher fuel bills, and missed business opportunities, with estimates suggesting it costs £2billion annually in lost productivity. Motorists consistently rank the M25 as one of the country's most frustrating roads, citing congestion, delayed journey times, and poorly surfaced stretches as major grievances. Many experts warned that the M25 would be overwhelmed with traffic even before it opened, and they were right, with little changing over the past 40 years.The motorway has become a battleground for frustrated drivers, with some taking aim at poor driving standards often encountered on the motorway. While it remains one of the most important pieces of infrastructure in Britain, the M25's chronic problems are here to stay, keeping businesses on their toes and commuters miserable.