Hi there,
I've had a go at the sunroof drains. Reading on the net strimmer "wire" is recomended, though i didn't have particularly thick stuff and it was a medium sucess. I ended up taking the Passenger wheel off and the back arch cover. Up in the top of the wing is where the front sunroof points exit and a bit of massaging of the nozzle and I cleared it and flushed water down and it's free flowing now.
Tried the same trick with the drivers side, but removing the arch and the washer water bottle is obscuring things
Not ideal but at least now with one drain working well it clears the water build up quickly and the cabin is safe from going round a corner!
Do all the D3's have rear sunroof drains as i've seen conflicting info and didn't look *doh*
Lee