New (Bad) MPG record - Toyota Yaris Forums

Kaotic Lazagna · 01-14-2018, 03:50 PM

Even if the tire psi is the same, the car will use up more fuel. Most likely the defroster is being used, so that kicks on the AC, which consumes fuel. Cooler air is more dense, so more fuel will be used. Most likely the heater is also on, so that consumes more fuel. There's probably more wind for the car to push through, and he already mentioned (having to plow through) snow.

Secretblend · 01-27-2018, 07:39 PM

Quote:

Originally Posted by Kaotic Lazagna

Even if the tire psi is the same, the car will use up more fuel. Most likely the defroster is being used, so that kicks on the AC, which consumes fuel. Cooler air is more dense, so more fuel will be used. Most likely the heater is also on, so that consumes more fuel. There's probably more wind for the car to push through, and he already mentioned (having to plow through) snow.

How does heater use more fuel?

Unless I am wrong, more fuel shouldn't be used.

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01-14-2018, 03:50 PM	#1
Kaotic Lazagna View User's Garage Drives: '14 GT86, '08 Vitz Join Date: Dec 2006 Location: Central Valley, CA Posts: 9,873	Even if the tire psi is the same, the car will use up more fuel. Most likely the defroster is being used, so that kicks on the AC, which consumes fuel. Cooler air is more dense, so more fuel will be used. Most likely the heater is also on, so that consumes more fuel. There's probably more wind for the car to push through, and he already mentioned (having to plow through) snow.