I've used WeatherTech in my family's last 5 cars. Expensive yes, but the fit and protection are worth it.I tried looking at "u trim to fit" kits and non of them looked to fit. the weathertech trunk liner i bought isn't that good IMO. for my front and rear floors I got the ID 4 badged rubber mats from vw dealer. at least I know they are custom fitted for ID4 interior floor. the best price i found was using google search on "vw id 4 floor mats" then click on the Shopping link. you should see vw dealer prices and they will ship for around 15 bucks. but be careful as some dealers will charge some bogus handling fee. I was able to get a set of Monster Mats for $87 shipping included. good luck.