fuel consumption issue

the handbrake is on.

the tailpipe would emit smokey black exhaust, if it were something like retarded timing-

Way more than usual... something sudden like a clogged cat, injector failure, plug wire on the exhaust. Is it running rough? Seized caliper ... feel the wheels after driving ... look for one being hotter.

injectors leaking [ck. oil for fuel] o2 sensors wacked out .. map sensor telling bcm or rather pcm on that one your towing a load,,,, line leaking slightley that air drys before puddle shows up??????????/////

...hate to beat this one to death, but has strangled the oxygen out of me, that is the EGR (exhaust gas recirculation) valve that has been the porcupine in my soup since the dreaded thing became a thing. Please make sure yours is operational. Crappy, even when they work normally~

My 2003 nissan pathfinder is not racing