I bought my Niro 3 new just over 4 months ago and have used a child car seat no more than a dozen times (always behind the passenger seat), and on each occasion for less than an hour. I have now observed that the leather below where the inner connector goes through is creased, and no longer returns to its original level. It is also now possible to pinch the leather between my thumb and forefinger because it is so soft, and there seems little padding below the leather at this point. I have spoken to the garage from where I purchased the car, and they say I should have used ISOfix guides, so it is not covered by warranty. However, ISOfix guides are considerably larger than the connector, so surely they will cause more damage. Has anyone else had a similar issue?