I have Toyota premio X 1800cc 2005 earlier it was giving round about 16 kmpl average on highway but now it gives only 8kmpl and on idle position its RPM fluctuates means not stable . How can i resolve the issue please help.
Get the throttle body and ignition coils checked. Also, have the car scanned by a professional who truly understands diagnostics—not someone who only knows how to clear error codes.
