Motorists who attempt DIY improvements on their cars may end up lowering their potential resale value, according to British Car Auctions.
Extra fittings such as the wrong kind of alloy wheels and additions like phone holder kits, tinted windows and lowered suspensions, which may not appeal to all drivers, may reduce the resale value of cars by up to £500, the group said.
BCA's Tim Naylor advised people to be more moderate when customising vehicles if they wanted a good price at used car sale.
He said: "That boy racer bling may be appealing now, but retro-fittings can put the average buyer off, so it may be better to go for something with universal appeal, such as a good in-car entertainment system.
"The majority of motorists are wary of any upgrades that are retro-fitted, particularly on younger cars, where there are concerns that this might void any warranties. And by modifying a standard car you are actually reducing your potential audience of buyers."
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