yeye, for the exact reason look for a company operated pump in your vicinity, you will live a happy life.
company operated pumps calibrate machines every 12 hour and also keep the exact (or try to) quality of batch which came out of refinery to your car. We are blessed in islamabad to have two attock fuel pumps in f-11 both are company operated and sell the best fuel in pakistan i can bet a grand on it.
Suzuki alto 2012 pkdm 1000cc declared gas guzzler by pakistanis used to give me 14-15 km/l with AC in local driving conditions, only once in my driving life i refueled from PSO f-8 and the car gave me 9 km/l .
fuel quality matter alot, ALOT.