The picture from the blue car is not from my car... its from some junkyard. Sorry for misleading. According to background check, my car has not been in any accident. Today I got the car to a proper car lift and saw the condition of the chassis. Rust proofing was done half assed - only where the plastic covers are not covering the chassis. On the plastic covers, there was more than 1kg of sand. Suprisingly the behind the plastic covers was mostly not rusted. Just some little surface rust here and there. And the car has 360000km on it. The panoramic roof was leaky when I got it. The rear 'sewing' pipes had shrunk and didn't even reach the grommets so all water just poured in - this might have fed the rust in the chassis on the opposite but same spots as the rear most muffler is. I replaced the 'sewing' pipes. New ones - same part number are more than meter longer. I removed the rear grommets for now and just ran the pipes along the groove for rear hatch - down to the rear bumber. All in all, not that bad for great driving car with much room for growing family. -sills rusted through on both sides at the rear pinch weld jacking point. Pinch welds crushed - maybe a reason for the rust? -> straightened them today -loads of dry leafs behind front wheel arch inner liner. Drivers side (left) rotted, but sill seems to be intact. passenger side good -rear wheel / wing arches both rusted at the marked spot of previous post. -the spot on behind, under chassis, opposite to the muffler, 'behind' the spare wheel well. Not through rusted, likely.. I'll sand blast the bottom to remove surface rust and then give it a proper phosphoric acid bath and then some good antirust paint. The sills.. I'll get klokkerhom's repair pieces for ~86eur / piece. I'm not much of a welder yet.. but maybe I'll learn the trade again with my mig/mag/tig machine. Or pay someone else to weld the bits. I can do the painting and proof the innards with antirust stuff. I might get the company that sold me the car pay me back for the repairs - if I'm lucky. They already told me that even though they had AI enhanced the images, the rusty condition of the car shouldn't be surprise as it has 360tkm on it and the hole in the sills shouldn't be problem for yearly MOT for the car.. ha ha.. if there's a hole, the car won't pass the MOT.