The company uses Government data released for MOT to compare mileage trends.
This is the first time the national average will have fallen below 6,000 miles a year for the first time since MOT records have been made public.
Lower mileage drivers are using the benefits of flexible, pay-by-mile car insurance during lockdown, with By Miles seeing its strongest sales weeks ever as motorists look to save money on car insurance while not driving.
According to James Blackham, co-founder of By Miles, "You only need to look at the roads to see that motorists haven't driven so much over the last few months, but this latest data from the Department for Transport shows that drivers have been steadily driving less over the last ten years."
"During the crisis, drivers have rightly been questioning why they should pay for insurance they're not able to use, and asking why traditional car insurers can't provide a flexible alternative to meet their needs."
"Our pay-by-mile car insurance provides lower mileage drivers with a flexible, lower cost policy that drivers can track in real-time. And we only expect to see demand growing as driving habits shift while we work our way back to a new normal as lockdown eases."
Source: By Miles