My percentage was 109%
But, as with others, I found it very narrow. For instance- we have 2 cars - one, a big one, that DH uses to transport cancer patients and, often, their relative to treatment appointments on 2 days per week and another one for my volunteering. What I do is fairly specialised and I sometimes have to be at the other side of the county by 9 am. Doubt that would work on public transport.
Obviously, we use the cars ourselves and they are our choice.
We have been thinking of getting an electric car but read this morning that they only become carbon neutral after 70,000 miles taking manufacturing into consideration.