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wtberni 12/5/2012

2009 Hyundai Accent GL 4 Cyl 1.6L


MPG has dropped from 32 MPG to about 30 MPG. Why???

I bought the vehicle about 7 months ago with 20,000 miles on it and consistently got 32 MPG and now it has dropped to about 29-30 MPG, only thing I have done is change the oil; tires are new and in good shape. What could caus ethe drop, air filter? Or something else?

1 Answer


Jimm 12/6/2012

Here are some simple suggestions;
Check your fuel system, dirts creates poor combustion - means some of the mixture were not burned during combustion.

Dirt inside fuel tank - clean it w/ fuel cleaner

Clogged fuel lines - clean the lines

Clogged fuel filter - replace filter

Clogged fuel injectors - clean fuel injectors

Dirty air filter - replace air filter

Low tire pressure - check and fill to the recommended pressure

Have the on-board diagnostic (OBD) system checked (scanned) for free - at any local auto parts store. Retrieve any stored codes that maybe not displayed.

Post a reply with these above possibilities and any specific fault code(s) - for further assistance.

Visit these parts sources; www.RockAuto.com or www.autopartswarehouse.com for parts as required.


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