Used mild hybrid car sales hit a record level in October, according to Indicata.
The analysis company said mild hybrids accounted for 10.5% of sales in the month, having seen a 2.5% fall in prices since the summer.
However, it said stock levels of the fuel type had continued to rise, accounting for a record 11.9% market share at the beginning of November.
Indicata UK head of sales Dean Merritt said: “Hybrid sales across the board have been strong all year as have prices, but the real test will be how the market copes with the increased volume of used cars coming back from lease, personal finance and salary sacrifice contracts.
“If demand continues to increase in line with this increase in supply, then prices should remain consistently strong, but prices may come under pressure.”
According to Indicata, used EVs were the only fuel type to see a rise in prices in October and early November, up by 0.9%, driven by strong demand from the wholesale and retail sectors.
Merritt said: “Dealers are buying more used EVs from our wholesale MarketPlace online portal than ever before as they sell more zero emission cars to consumers more quickly. “This activation of the wholesale and retail sales ecosystem is what we have been waiting for to help used EVs stake a long-term claim in the overall used market.”