Bhai iski tunning krwao, cat kit clean krwao, spark plugs change krwao, aour main chez ye ke iska oxegen fuel sensor chek krwao, Meri gari ki Bhi same condition thi, lakin ap Meri gari city mein 12.5 aour highway pe 110 to 120 kmpl pe 15 ki average de Rahi he, tyre pressure Bhi check kro. Insha Allah average behtar ho jae gi