Chevy Metro
Chevy Suburban
Fuel Economy and Mileage

What could be reason for not getting more than 20 MPG in a Chevy Metro?

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Wiki User
September 13, 2011 10:55PM

try a tune up, new plugs, plug wires, air filter, oil change,

and maybe the o2 sensor, or it could possibly be a fuel leek. good

luck, shaun

Just got 1 other answer and that's age of engine. Carbon buildup

in pistons or seals in the head. Many many things can lower

mileage, but just plain getting old is something to consider. We

are talking about cars over 8 to 11 years old.

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