It’s a shame if you know of any other ways of making it more efficient that please let me know

 

your doing better then me. i get 8.6 city n my 2003. traffic lights every block and speed cameras every other can only go 25mph. effing horrible. ready to get an ebike LOL...... no insurance, no tags, no inspections/mot to deal with.

 

Welcome...
When you calculate conversion costs it could be more cost effective to look at a hydrogen cell.