You could switch to the Civic or Civic Tourer 1.6 i-DTEC that gives an incredible 60-70mpg, an HR-V 1.6 i-DTEC that gives 60mpg +, or, if you're nervous about diesel in the future, a Honda Civic 1.8 i-VTEC that will give you 45-50mpg with no worries about DPFs, etc. Whichever you go for, buy it on 55 profile 16-inch or 17-inch tyres and run them at 30PSI for a much better ride quality and better steering response.