Hi I have a leak in my Fiat500l its coming from the roof and the garage have said they need to take the whole of the inside roof off including airbags to locate it - sounds expenses - any ideas anyone thx

Hi it does seem drastic I assume it has a glass sunroof and that the drain tubes have been checked, I remember with Croma's that drains could get blocked and water getting where it shouldn’t. If there is no way to get to the tube under the glass it might be possible to find where they drain at the bottom and gently push something suitable up hoping to dislodge the blockage/whatever.
Also parking at an angle might cause the drains not to work if they are front left/right then parking uphill will case water to back up.