adamarchie

Thanks for replies. I think the noise started around 6 months ago. Came on over a period of a few weeks, I think, but hasn't really got any worse since, which is of some reassurance, hopefully. It is there whenever the car is moving and varies in pitch and loudness depending on the speed of the wheels. It's there whether or not the clutch is engaged and whether or not the engine is on. It doesn't vary at all in response to acceleration, braking or cornering. Definitely from the rear. Some back seat passengers have thought a bit more from the right than the left but I'm not convinced about that. I got my garage to check it over a few months ago and they couldn't find anything wrong. At its service a month back, they thought the rear left bearing was a bit noisy and changed that, but no difference. Tyres were changed at that point too as they needed it anyway. I then wondered if it might be the rear right bearing and/or the Haldex (last Haldex oil change had been around 30,000 miles/2 years ago). So they changed the right rear bearing and both the Haldex oil and rear diff oil. They didn't see anything that led them to think any issues with either. It then needed to go to Hawco Skoda anyway to get a new key coded so I asked them to see if they could figure it out. One thing I'd thought of is whether it could be some sort of cabin sound insulation issue but neither garage reckons there's an issue there. No impact on driving or fuel efficiency. So I'm thinking maybe just leave it for now, given that it hasn't been getting worse over the last 4 months or so. What do you reckon?

I've got a 2016 Octavia Scout. A persistent noise from the rear of the car has been traced to the rear differential (after replacing both rear bearings, changing tyres, changing the Haldex oil and the rear differential oil). Local Skoda says the diff is a sealed unit so only option is replacement, and have quoted me 6500 quid. So first question is should this be covered by standard warranty? I don't think so but wanted to check. Second question is whether a garage could open it up and repair it or whether I do indeed a whole new unit. In which case, would it be reasonable to get a second hand one and have my local (cheaper, non-Skoda) garage fit it? Thanks for any advice!