Year on year, the used car market grew 108.6 percent in the second quarter, with more than 2.2 million vehicles changing hands, the Society of Motor Manufacturers and Traders (SMMT) said.
The number of sales was up 6.6 percent on pre-pandemic levels in 2019.
But petrol cars made up most of the sales, with the uptake of electrics slow.
In addition, increased demand led to a rise in sales of older used cars, with only 12.7 percent of all vehicles sold being made within the last three years, the lowest on record.
The SMMT said the increase in sales tracked the country’s easing of COVID-19 restrictions, with demand rising as businesses reopened.
Ford Fiestas, Vauxhall Corsas, Ford Focuses, and Volkswagen Golfs were the most popular models, with black, silver, blue, and grey being the most common color choices.
SMMT boss Mike Hawes said many consumers had also turned to the second-hand market due to a shortage of new cars, at a time of “increased need for personal mobility with people remaining wary of public transport as they return to work”.
The shortage has been linked to a lack of parts. When lockdowns forced production lines to halt, microchip manufacturers diverted the chips that would normally go into new cars to the consumer electronics market, and supply is yet to fully recover.
It has driven up the price of second-hand cars, said the SMMT. One dealership, Nuneaton Cars, said buyers were attempting to gazump each other to get hold of used cars already marked as sold.
‘Electric uptake slow’
Despite the surging demand, sales of used battery-electric and plug-in hybrid vehicles made up just 1.3 percent of second-hand car sales in the second quarter of 2021.
The SMMT said the plug-in used car market “is not yet seeing the acceleration of uptake as has been seen in the new car market”.
“The scale of the challenge to transition the entire used car [fleet] away from traditional fuels remains significant,” the industry body said.
The slow uptake in greener vehicles comes amid a major UN scientific report that said human activity is changing the climate in unprecedented and sometimes irreversible ways.
Despite this, Mr. Hawes said the rebound in sales was “welcome news” due to a buoyant used car market being “necessary to maintain strong residual values which, in turn, supports new car transactions”.
“We now need to see a similar rebound in new car sales to accelerate the fleet renewal necessary to deliver immediate and continuous improvements in air quality and carbon emissions,” he said.
New car registrations fell by almost a third last month, marking the worst July sales since 1998.
Just 123,296 new cars were registered in the UK, a 29.5 percent decline in July 2020.