I know you said you maintain your vehicle regularly but I would definately take it to Renault for a free inspection...as well as other people with clios. I would hate for it not to be a non maintenance issue and somebody get seriously hurt or killed....
As far as I know Renault are doing free checks
Originally Posted by mr.ed
As the owner of a 2003 Clio with a bonnet catch exactly the same as this one I don't have any worries at all. The catches appear to me to be quite substantial and the plastic bit is only to pull to release the safety catch. Like all things mechanical though they do need maintenance, in this case lubrication the lack of which could, I suppose, cause the safety catch to stick in the open position or the return spring could rust and break.
Even if the vehicle has been serviced regularly it is down to the driver to ensure that the vehicle, as far as is possible, is roadworthy. I inspect all fluid levels, tyre pressures, locks and hinges at least weekly. Why? Because that way I reduce the risk of an unpleasant surprise of something failing.
I suspect when all this has been sorted it will be down to lack of lubrication/maintenance.