I own mk 2.5. It is fitted with a 015 battery.
All manuals and guides say it should be 063 which is somewhat wider. As the battery clamp is a fixed width type, I am wondering best course of action.
It definitely needs replacing, I assume it is lead acid not gel but how would I know.
It is a second car left outside and only used occasionally.
as ever your thoughts and help are very much appreciated.
i would add that 015 batteries are not straight off the shelf