powner

Guys

If I drive 50 miles once a week and get 25mpg over time, what sort of mileage should I expect if I drive 10 miles 5 times a week? All other conditions remain the same

I know this may sound like a stupid question to some but if you throw some rough estimates on this, I'll explain my reasoning behind it

Thanks

mitsuguy

iTrader: (2)

the more times you start the car and it has to warm up, the less fuel economy it will get... how much difference, can be a decent amount...

exist3nce

Agree! Especially if we are talking sub-0 winter warmups here.

PIONEER

iTrader: (2)

to do this test algebraically, you first need to give me a 10x5 #, and then we can run a regression on it to see what we get over weeks/months.

I would agree with the others that factors such as startups, weather, wind,traffic which are out of your control would create an interesting model.

lazymashi

i found some posts and threads about using 87 octane gas, instead of the 91/93 octane for better mpg...
has anybody tried this?

mitsuguy

iTrader: (2)

Actually, our cars will get better fuel economy with the higher octane fuel, though not by much - when using lower quality fuels, the car will learn this and pull timing - pulling timing can cause a lack of fuel economy, though usually not much...