Marks on Rear Black Trim on Boot

I’m glad to see this forum. I also have this problem and awaiting a response from Toyota UK. I will update once I have heard back from them.

I had this on mine too.
Informed my dealership who said that this is normal? (I don't think so)

They polished it out, which definitely helped, however it seems to keep coming back!
Is there anything I can do to make it better? (Gave up on the dealership cuz they just keep dismissing this issue)

Any help would be appreciated!

I understand, from the guy who detailed my car, that the lower boot spoiler is not painted but is a plastic having a gloss finish (the upper spoiler is painted with a black metallic finish). He spent ages carefully removing scratches and marring (and this, a brand new car!!) before applying a ceramic coating.  
Be very careful when using anything aggressive so as not to remove the gloss appearance as it won’t be very thick.
A ceramic coating should reduce risk of future issues with marring/staining

I have same issue. Looks like water marks on rear spoiler but won’t come off. Washed car only by hand and has it three months. Will contact dealer. 

On 10/5/2023 at 4:27 PM, Michael Panayides said:

I’m glad to see this forum. I also have this problem and awaiting a response from Toyota UK. I will update once I have heard back from them.

Any update? 

Any added valeting products at dealers like protection treatment with fancy names ( ceramic coating) - bring higher risk of paint work damage in the future.
The reasons are all those ceramic coating or specialty treatments work as top lacquer sealant that make a bond with the original top coat to protect it however only specialist shampoos and soft water should be used afterwards to maintain car cleanliness. In real world this is almost impossible, acidic rains, screen wash solutions, road grid and dirt, salt water all these elements can and do chemical reactions when in contact with your new “ specialist coated “ paint work and the results are obvious. 
Best way to protect your car factory pain is to wash regularly with low ph level high quality products, hand wash by yourself or valeters, and avoid adding any paint protection except simple old school car wax.