[spartacus]

I'm not speaking about the lighter colours, as I think that would almost be impossible to maintain unless you live in a warmer climate. I see you're UK based, so four seasons in one day!

If I was cleaning, then i'd use a carpet cleaning solution like 1001 shampoo. The key is not to wet the area, and use a bristle brush and work in a circular motion. If you have access to a wet vacuum, then that would help afterwards, then air dry. For something more stubborn, such as an oil stain, then methylated spirit to sponge off with a paper towel, then steam-clean or shampoo.

If you want to protect, then any 3M Scochgard spray will work.

If our car has leather - then Colourlock products are excellent for cleaning, restoration and protection.

 

[spartacus]

Thanks for the useful advice. But I think you are talking about the carpet type mats?
I have an issue with the rather strange ‘all weather’ mats that BMW sell as an accessory. They are not rubber but seem to be made of an obscure material with a coating on. Light grey colour - which was a pretty dumb idea in the first place. I have tried a number of cleaners but so far without any success.

These things: New Genuine BMW i3 IO1 Set Of Rear All-Weather Floor Mats 51472353819 5056162837157 | eBay

At £70, if a wet vacuum doesn't work, then not sure what will. My wife's i3 has carpet mats over the carpet underneath and this is in daily use. Yes they get wet, but once dry, the dirt vacuums off and they come up great. The picture of the mats - they look grubby, and they are meant to be new. Trouble is it looks like it's a weave. Must be polyester or nylon which just attracts the dirt.