Poolmane

The car handles very good. Since I have the knock sound from beginning there is no fault with the handling. I have a safety training with the car and it was the "best" in the round of other cars. It handles very good.

The spare wheel gunk i since 3 weeks on the right side of the trunk. That's not the fault. I upgrade the battery to 55ah 12v custom battery so that there is no more space for the wheel gunk. But thank you for your suggestions 🙂

Hey, as I said I have a hybrid and there is no spare wheel. i I really can't imagine that something on the chassis/suspension is defective. I mean the vehicle has just run 47000km.

It's more a clean muffled knock noise when the suspension is working.

I didn't have a spare wheel it's a hybrid

Hi friends, I have a IS300h F-Sport (from 2017, about 47000km on it) since last year. Sadly I have a thumping dumping sound from rear. I'm trying to describe it: when I'm driving on a road that is slightly bumpy or not brand new, I hear a dull rumble from behind. Especially at slow speeds. It is not a rattle or a metal sound. It is a clean dull muffled knock/bump. Everytime it's the same noise with the same volume. A month ago I was at service and addressed this. They could hear it but they couldn't find anything and said it's normal. That drives me crazy! I looked through various forums in Germany but couldn't find any help . The error occurs with both summer tires and winter tires. The vehicle is completely original. Additionally i sound deaded the whole car, which makes it super quiet and comfy but the thump bump bump bump at lower speed destroys the experience. I appreciate all your help and I tied to discribe the problem properly. Sorry for my slight bad English 😄 Thanks a lot and best wishes from Germany Timo