April saw average car values at the three-year, 60,000-mile point, fall by 1.5%, equivalent to around £300 as the market returns to seasonal norms.
The start of April saw used values fall 0.7% for three year old cars and 60,000 miles on the clock.
Wholesale prices for used electric vehicles (EVs) fell by almost £5,000 during Q4, according to Aston Barclay.
The average cost of a used van or LCV sold in BCA's auctions during July was £10,220, a 4.2% rise month on month, as used car costs rose by 2.9% to £9,464.
Used car sales have recovered by 2.8% from September 6, while new retail adverts have surged by 27.8%, according to the latest Cazana data.
Used diesel values have dropped by more than 10% since 2017, as demand shifts towards petrol models.
Demand for used diesel cars has remained strong in the first quarter of 2018, driving conversion rates at auction.
Average used values of used cars at three years/60,000 miles dropped 1.5%.
Britain’s Brexit decision could provide a boost to the used car sector at the expense of new car sales, according to Startline Motor Finance.
The pace of decline in used values is accelerating, with prices in May falling 1.9% so far.
The average selling price for part-exchanged cars sold by Manheim in October increased by 5.2% (£177) year-on-year.
Average used values dropped by 2.2% with an expected seasonal slide, according to the latest figures from CAP.
