Replacing column values

[indranil-laskar-92df376f (Indranil Laskar)]

I have a column in dataframe which has cars names say for eg hyundai i10,hyundai i20, bmw 5s, bmw 7s, and so on. I need to remove the variants names like i10, i20 and replace it with just purely the company name like hyundai, bmw, etc. So the column should have only the company name like hyundai/bmw and not hyundai i10 ori20. How do I do it?