VladicaO

Thanks @Alasdair1 . That fits the temperature side well — softer plastic when it's hot changing how it resonates makes sense. I had a look underneath as far as I could reach and didn't find anything obviously loose or with missing fixings, but I can't get a proper look without lifting the car, so I've asked the dealer to check the undertray and arch liners on a ramp. Worth noting mine measures a fixed 129 Hz that doesn't shift with speed — only the loudness changes. A loose liner catching the airflow would usually shift in pitch as speed rises, so I'm not sure a flapping panel alone explains a fixed tone, but a loose panel opening a gap that then resonates a cavity would fit. Either way it's on my list for the dealer to check. Cheers.

Thanks, @KinderBean that's helpful. Two things I want to pin down rather than assume: You mentioned the flaps might be behind the undertray — good point, I may well have them and just couldn't see them from the front. I'll confirm via VIN/PR codes. On the tow bar upgrading the cooling — I've read the same, but I'm not certain it's true for this exact model, so I'll verify it through the dealer rather than take it as given. Here's why it might matter: I do have the factory swing-out tow bar. Do you have one? If you don't have the tow bar (and therefore possibly no cooling upgrade) and you have no drone, while I have the tow bar and do have the drone — that could be the difference between our otherwise similar cars. If a few affected owners all turn out to have the factory tow bar, that's a very specific thing to point Škoda at.

@ilkosl thanks, this is exactly the kind of detailed reply I was hoping for — really helpful. First, answers to your questions: Roof bars — I only removed the crossbars; the longitudinal rails are factory-fitted and still on. Good point about the end caps, I'll tape those. Panoramic roof — no. Tow bar — yes, factory tow bar, but it was retracted during all my tests. Wheels — 16", never changed (205/60 R16). Grille shutter — I had a good look and I don't think I have one. I can't see any shutter mechanism or actuator behind the lower grille, just the radiator/intercooler directly. I'll confirm via VIN/PR codes through my dealer, but visually it doesn't look like I have active shutters. If that holds, the shutter can't be our common cause, since I get the drone without it. Dealer — yes, they drove it with me. The mechanic just said "it's the tyres" by ear, nothing measured. So I swapped the complete wheel set (summer → winter) myself — drone unchanged, same 129 Hz. No TPI/bulletin result was ever mentioned. I've since sent them a written report with the frequency analysis and asked them to escalate to Škoda and check for other reported cases. Two things seem to line up across the affected cars, and I'd like to narrow them down: DSG — mine is DSG (DQ381). Is everyone with the drone on DSG? Engine power — mine is 110 kW (150 PS). Can those of you with the drone confirm your output? @Gogich thanks — your 85 kW manual with no drone is a really useful data point. If it turns out everyone affected is 110 kW + DSG + Combi and the manual/lower-power cars are clear, that's a very specific pattern to take to Škoda. The higher-output DSG version has more to cool up front (gearbox oil cooler, higher heat load), which could change the airflow/thermal picture at speed on hot days — and would fit the temperature dependence without needing the shutter theory. Mine measures a fixed 129 Hz — if anyone can record and FFT theirs, let's see if we all land on the same frequency. Please do try the recording if you can; two or three independent measurements at 129 Hz in different countries would be very hard for Škoda to dismiss.

Hi all, I'm chasing a wind/resonance noise on my 2025 Octavia IV Combi 2.0 TDI 150 DSG and hoping someone here has seen the same. Symptoms: - A droning/booming sound that starts around 125 km/h and gets louder with speed. - It's strongly temperature-dependent: only appears above ~25 °C outside. On cooler days it starts much later (140+) or not at all. - Sounds like it comes from the front. Headwind makes it worse; drafting behind another car makes it disappear. - It was NOT there for the first few months — it appeared later. I recorded it and ran a frequency analysis. It's a narrow tonal peak at exactly 129 Hz. The frequency stays fixed at 129 Hz regardless of speed — only the loudness changes. It also continues unchanged when I shift to neutral and coast, so it's not linked to engine revs. What I've already ruled out myself: - Tyres: swapped the complete wheel set (summer Hankook → winter Michelin). Noise still there, same 129 Hz. - Wheel bearings (no change when swerving), balance (factory, smooth), ventilation (no change with recirculation or fan off), roof bars (removed). - Taped over many seams: hood seal, plenum cover, headlight gaps, windscreen sides, front of the roof rails — no change. The fixed frequency + temperature dependence + speed relationship all point to an aerodynamic cavity resonance to me, rather than anything mechanical. Two questions: 1. Has anyone had this and actually solved it? 2. I've noticed everyone I've found online with this exact symptom has the Combi (estate). Can anyone with a hatch/liftback confirm whether they get it too, or is this a wagon-specific thing? Thanks in advance — happy to share the frequency plot once my account can post images.

Hi everyone, Greetings from Serbia. I've recently become the owner of a 2025 Octavia IV Combi 2.0 TDI 150 DSG, and I'm glad to join the community. I'm fairly hands-on with my cars and enjoy getting into the technical side of things. Looking forward to sharing experiences and learning from you all. Cheers!