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Thanks toot, yes I saw those threads after posting. That seems a fair conclusion! The RAC recovery driver knew what the problem was immediately and said he'd seen loads. I'll try the Skoda dealership that we bought it from, then Skoda UK, then a letter before action. I'll also report it to DVSA so they can send me one of what looks like their standard letters.

I've got pretty much the same car, same year, bought from Skoda with about 5k on the clock and exactly the same happened to ours, exactly the same. It cost over £800 to fix; the mechanic replaced the injector as well as the bolts and seals. I've got a job sheet with pictures and videos to send to Skoda. It failed after a short trip but the day before it had driven about 300 miles back from holiday. The mechanic said we were very lucky it didn't go then when the engine was very hot.

Just confirming that you do need to remove the entire filter housing as described in the 3rd post in the thread below. Don't try to just unclip and pull the top off because the housing is indeed held together by those four clips and two screws that can only be accessed from below. The ball clips on mine were a struggle but start off with the bottom left and give it a good yank. The small hose at the back wouldn't budge so I just flipped the unit over without disconnecting.

Thanks toot, really helpful. Sorry to say that I'd seen both but you pointing to the second one made me read it a bit more carefully 😬 it looks like the three ball clip fastening is the one so I'll put some more effort into prising it off 👍

Hello all First post on the forum, I'm planning to do some servicing on my Spaceback 1.2. Has anyone opened this box by releasing only the four clips (there are another two on the back)? I've seen a video online (for a 2017 model, mine is 2016) that says the whole box has to be removed in order to access two screws on the bottom that secure the top part of the box. Apparently that box is secured to the engine assembly with three ball clips and the unit should lift off once the hoses and a pipe are disconnected. Mine won't budge at all and I can't find, and maybe shouldn't use, any levering points. I don't want to go too hard on it without confirmation that it needs to be done. Loosening the pictured clips it does feel like something else is holding the lid on. I'm a bit stuck. Sorry for the essay, any guidance would be really appreciated.