Sorry - read this last night and then got sidetracked. Please let me know if I've missed anyting. A FL Octavia vRS 230 does not have the VAQ diff. The easiest and most foolproof way to check is to confirm that the interior stitching is white, and that you have solid rear brake discs (which will be 272mm), rather than vented (310mm)? Did you get a good deal? How much did you pay, and what is the mileage? I'd normally avoid buying from Cinch as the majority of their stuff is part-ex/leasure return stock obtained from BCA and WBAC (their parent company). If it's a good deal, however, then that's a different story, provided you know what you're buying. An EPC light can mean a million things. In the simplest form, it means the car has detected a fault with the throttle, engine management or the electronic system. The first step is to see what DTCs have been thrown. I doubt it's the battery, given your description of events. My money would be on an ignition coil having an issue under load, a boost issue, or potentially a fuelling issue. At high RPM (above 5k) these cars can also suffer with oil pressure problems. Reading everything, it does potentially indicate a car that hasn't been cared for that well. Two cut tyres, one over-worn and one being the incorrect size... none of these are good things! The oil seperator is interesting though, as that's part of the PCV system that is a) known to be an issue and b) could be relevant to the EPC light. The boost pipe is also intersting, see my above point on a boost issue. I'm a bit confused about the first point on their list... leaking engine oil, so the water pump/therm housing was replaced? Eh? For context, these engines, along with many, many more, have a plastic housing on the thermostat/water pump. Over time, and many heat cycles, this housing becomes weak, cracks and leaks coolant. I think my car (a very tidy 2020 on 40k miles) may have this issue developing. Okay, sure, the housing is right next to the oil filter, etc, but there's no relation. I think the car had a coolant leak (hence the new pump) and an oil leak (hence the new VVT seals and timing cover). What would I do? That's a tricky one. I purchased my car as part of an agreement with a main SEAT/Skoda/CUPRA dealer as a replacement for a previous car they sold me with hidden crash damage. I wouldn't trust them as far as I could throw them, and checked everything myself, before having my mechanic tear the car apart too. Hell, I was sat on the forecourt running diagnostics and checking the specs list against the PR codes and VIN. It's good that you've done your research and checks. None of these issues are great, but they're also not terrible. Crap tyres, leaky shock, knackered water pump and some dinged body panels are par for the course on an eight year old Skoda. I would see what they say about the cause of the EPC light, and go from there.