Hi, since Fiat supplies the new Stilos without a lockable tank cover, I called yesterday at the Fiat headquarters in Frankfurt. Just the call back came. So: There are now in the Fiat accessories lockable tank covers for the new Stilos. Cost: for petrol models 17,48 €, for diesel vehicles 22,39 €, each plus fairy tale tax. In Frankfurt they said that they reacted to the criticism in Internet forums(!) and from dealers.