HELP! Sudden Drop in km/l - Poor Fuel Economy

[ice15]

I would suggest that you have your air sensor checked...

I think a sensor is not working correctly kaya you're burning more fuel that usual.

[xwangbu]

Baka bumigat lang nang sobra si Ms. Cath.

[emoji16]

[jick.cejoco]

Have a competent technician with a good quality scan tool(not a code reader) and record the STFT and the LTFT(short term fuel trim and long term fuel trim). This way, it will tell whether the PCM is trying to correct the air/fuel ratio by adding or reducing fuel delivery.

[Walter]

The last mechanic to "fix" your vehicle must have done something ...