A survey of 8,000 motorists revealed the London at Dover The route is the least traveled main road in the country, with 37% of people dissatisfied with their last trip.
Sections of the M20 have been transformed into a “smart highway”, resulting in major road works from July 2018 to March 2020.
Planning for a no-deal Brexit has also caused disruption, with the installation and removal of road barriers.
A respondent to the Transport Focus survey, which was conducted between April 2019 and March of this year, said: “Do the road works. It’s been 50 mph for too long – it must last two years maybe. ”
This is the second year in a row that the M20 has come last in the poll.
The M23, which connects Gatwick Airport to London, was ranked second worst motorway this year, with a satisfaction rating of just 64%.
In contrast, the M11, which runs between London and Cambridge, was England’s top rated motorway.
Around 92% of motorists are satisfied with their last trip, with high scores in terms of travel time and safety.
The average satisfaction rate on all routes was 81%.
Drivers voted the A66 road through the Pennines between Scotch Corner and Penrith as the best A road, with a 90% satisfaction score.
Anthony Smith, Managing Director of Transport Focus, said: “As drivers return to the roads, it is essential that the management of road works is reviewed.
“Our research shows that if you are happy with the travel time, you will be generally happy with your trip.
“This is an important message for Highways England as traffic begins to return to pre-foreclosure levels. ”
A Highways England spokesperson said: ‘The M20 and M23 are two of the busiest motorways in the country, with thousands of drivers using them daily.
“Over the past five years, Highways England has invested almost £ 400 million in three major projects aimed at improving the flow of traffic on these roads.
“We are aware that traveling in traffic management on a daily basis is not ideal, but drivers will soon start to feel the benefits of our work. “