Only you can decide what car suits your needs. Get in your car and visit as many dealers as you can. Look at the cars and since you are disabled make sure they are easy enough for you to enter/exit etc., we have no idea what your disabilities are and what problems they cause you.
Very few run of the mill cars have electric seats even as an option. You would need to be looking at the likes of Lexus, BMW, Mercedes, Jaguar, Range Rover, etc to find electric seats as standard.
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