Convertible prices are soaring thanks to the warm spring weather, and seem impervious to the wetter May, with values for three-year-old models increasing by around £340 on average.

And it is not just premium models that are holding their value – fleet cars like the Vauxhall Astra TwinTop and Volkswagen Eos are doing well too.

BCA’s network operations director, Simon Henstock said: “Values for convertibles are more seasonal than other models with prices rising in line with the temperature.

“Average prices for a typical three-year-old, 30,000-mile con-vertible sold at BCA increased by £339 (2.4%) to £13,718 in the first three months of this year, making this a good time to sell a soft-top.”

The residual values of used convertibles increased, month-on-month, by up to 5% in May. EurotaxGlass’s found that a number of volume-brand drop-tops retain a far greater proportion of their value than prestige-brand models from the likes of BMW, Lexus and Maserati.

Jeff Paterson, senior car editor at EurotaxGlass’s said: “This analysis offers some stark examples of how changing patterns of supply and demand are challenging the market’s views of which cars hold their value best.”

Volume convertibles RV top 10

1 . Volkswagen Eos 2.0 TDI Sport
2. MINI 1.6 Cooper S Convertible (Chili Pack)
3. Mazda MX-5 1.8i
4. BMW 330Cd Sport Convertible
5. Mercedes-Benz CLK200 Kompressor A/G Cabriolet
6=.Vauxhall Astra 1.9 CDTi 16v (150ps) TwinTop Sport Coupé
6=. Mitsubishi Colt 1.5 CZC Turbo Cabriolet
6=. Peugeot 206 1.6 HDi 110 Allure Coupe-Cabriolet
6= .BMW Z4 2.5i Sport
10. Audi TT Roadster 1.8 T (150 bhp)