I was able replaced my Vauxhall zafira tourer C driver seat plastic trim. It was broken when I bought the car second hand and it makes the driver seat looks unattractive. Vauxhall garage I visited told me they have to replace the whole seat which will cost me about £500 🙄🙄🙄. I decided to give it a try. I ordered the replacement part and it took me 1 and half hour to completely replace it. I will upload a video on YouTube to explain the process. What makes it a bit difficult is how to remove the lever that is use to adjust the driver back seat. The pictures below are the broken plastic trim and after I replaced it.