Any recommendations for getting stains out of car seats? 

Dare I ask, what kind of stains?

Halfords do their own brand upholstery cleaner. I used on the cream mats on the half’s BMW 120 before she sold it. Came up very well after two applications but they were more black than cream to start with. 

I think its blood.😳

https://spotremoval.coit.com/how-to-get-blood-out-of-upholstery

Wife suggested some foam carpet /upholstery cleaner that she have previously used to get "dog stains🙄"out of a light carpet. It removed the stain after two applications as per the can's instructions. The seats are dark grey so that might have helped.