I have Vitz 2002 which is with me for last 10 months. For last 2 months it started to consume fuel and doing about 10 km/l without a/c.

Plugs, Air Filter, oil and oil filter all are new.

Recently, i have noticed that car is giving minor vibrations when put on brakes on signals.

I don't know if the problem is in MAF, CAT, O2, Throtle or something else.

Can someone guide me on this? or someone can refer me to any good mechanic/workshop in Lahore?