Don’t buy if got not getting written commitment

It is good in or better in interior and facilities and bad in pick up,avg and service ,worst in avg claiming 15km and giving 7 km Response zero from company, I bought from Surat and in bought as useful car as automatic but facing difficulty in city also ,all other way good and no doubt about safety and interior ,workmanship good ,but expecting whatever company claiming should we get at least 90% Hope company will contact and resolve issue