On 2/6/07 11:17 AM, in article eqad7u$3uf$1@charm.magnus.acs.ohio-state.edu,
"Doug B" <doug.black@osumc.edu> wrote:

> motsco_ wrote:
>> Doug B wrote:
>>> High Tech Misfit,
>>>>
>>>>> I have a '98 Odyssey EX. Over the last month or two, it has gone
>>>>> from 25mpg highway to 20. It's nothing obvious like a disconnected
>>>>> spark plug or an underinflated tire. Any guesses what it could be?
>>>>
>>>> Is it winter-like cold in your area? If so, that's probably why.
>>>
>>> Can cold weather really cause a *20%* drop in fuel economy?
>>
>> -------------------------------
>>
>> Short trips with an engine that doesn't really get warmed up plowing
>> through snow with Winter Gas in the tank will KILL your gas mileage.
>>
>
> The last measurement covered mostly highway driving (75 miles nonstop
> each way) on dry pavement.
>

My '96 Odyssey EX averaged 21.8 mpg over the first 94,000 miles before I
passed it off to a family member. It did get 25 on the highway, but only on
long trips when it was driven through entire tanks of gas (> 300 miles)
without stopping.

How long have you had this car? Do you have enough experience with it to
know the 25 mpg wasn't just a fluke?