As I understand it the new maximum state pension is £155.50 a werk and there is no top up - this replaces lower pensions which could be topped up to this level with pension credit.
For a single person it is difficult to live on this and run a car - yes they have a bus pass, but you are very lucky if there is a bus that goes to all the places you may need to go to eg doctor, dentist, friends, relatives. You may have to live on this income for 20 years, and if you have no other income, that means no holidays and limited new clothes.
I think it was better to have a lower basic pension and top it up for those without private pensions - which are more likely to be women who worked part time when their children were young and maybe looked after parents or parents in law.
If you own your house you need to pay out for repairs too, and the pension certainly doesn't cover that. The only option is to cash in on the equity which, with compound interest, may mean that when you die there is no value left in it.