I have a new Peugeot 3008 SUV auto. I have been told the gearbox monitors the way I drive, so if I am too heavy on the gas pedal the mpg will be poor but drive carefully and get good mpg.

Steve Allison

• 5569 Answers
• Posted on Dec 24, 2008

SOURCE: Poor Fuel Mileage 2006 Hyundai Sonata 2.4 motor

I don't know from where you bought the car but do you feel certain that typical causes such as fouled plugs or clogged air filters are not at fault?
Most dealers, even the shlocks don't normally skimp on the simple stuff but who knows about a private source?
That does seem low, especially the city numbers. I don't think Hyundai is any leader in gas mileage but they are better than what you are getting.  

SOURCE: POOR GAS MILEAGE 1997 Neon (DOHC)

A very simple and inexpensive solution to this dilemma is to replace the fuel filter. Sometimes they get particles in the fuel system that get caught up in the filter, and plug it up. They are generally inexpensive, and the change takes less than half an hour. If you are mechanically inclined, you can even do it yourself. Buy a Haynes manual specific to your car, and you can learn to do the simple things yourself, saving a ton of money! It is worth the effort.

SOURCE: poor gas milage after changing air filter

i think you might have disconnected some vacuum hoses near and around your air filter.

G

SOURCE: poor acceleration terrible mpg

go a step ahead, it may not be the issue, but it will help.. replace the spark plugs and coils.

SOURCE: auto gearbox

if it has a dip stick under the bonnet you need to have the engine running with the box in neutral then dip the oil
if the engine is warm then it should read around the top mark, if the engine us cold then it should rear around the lower mark
if there is no dip stick then there is no way of checking the level and you will need to drain the box and re fill with the correct ammount through the gearbox breather on the top