I would guess around 20-25 mpg.
Things that affect it are:
correct tire pressure,
a good thermostat so the engine warms up quickly.
O2 sensors operating correctly.
Clean air filter
no drag from the brakes
avoid speed increases to just pass as opposed to cruising
proper gapped and clean spark plugs
long warm ups
Thursday, January 31st, 2008 AT 6:05 PM