2002 se v6 solara runs great, but 13 mpg in the city

[withink]

what's wrong with my MPG, do i need to replace my spark plug or something else? Every full tank of fuel (18.5Gl)just ran 240 miles. Any advice? Thank you.

[rftl08]

im wondering the same thing. havnt really checked the gas mileage since it dropped but i filled it up last week and now im on 5/8 and the trip says 88.7 miles. something is def. wrong anyone have any ideas?

[littlebookworm]

Something is definitely wrong with both your cars. Depending on the mileage, a tuneup might be needed. But before you do that, I'd recommend a scan of the trouble codes. Even in stop and go NYC traffic, I've managed at least 18mpg. Good luck, and please post what you find. Hy

[Eye8Pussies]

it's always a good idea to start checking your o2 sensors as well as the ecu tunes with them and you're most likely running really rich

or, there's also a possibility of sludge if proper maintenance hasn't been done for the life of the engine- do a search to find out info about that.

[naught]

I too have had mileage issues on my 2001 v6. It seems that when the temp drops (single digits F), my mileage drops to as low as 16.5/mpg city. When the temp gets back near freezing, the mileage goes back to 21-22mpg city.

Air filter has been replaced. No performance loss. Plugs are fine. Replaced the gas cap because someone suggested that it may not be making a good enough seal. I've even tried gas from different gas stations and even premium.