Car runs better with full fuel tank - Toyota Yaris Forums

komichal · 12-09-2022, 01:05 AM

Hi folks,
my Yaris accelerates better with a full fuel tank. There is a considerable difference between 25% and 100% of full tank - a few people confirmed this that they feel the same with this car, so it is not only some weird "placebo".

I would actually expect that with full tank the car should feel a bit worse because it is simply more weight to carry. But it is the opposite.

Why is that? I can only think of the fuel pump, maybe it is worn-out after all these years and higher level of fuel in the tank makes its life easier?

Thanks for any thoughts on that.

12-09-2022, 01:05 AM	#1
komichal View User's Garage Drives: Yaris 2007 1.3 2SZFE 64kW Join Date: May 2012 Location: CZ Posts: 336	Car runs better with full fuel tank Hi folks, my Yaris accelerates better with a full fuel tank. There is a considerable difference between 25% and 100% of full tank - a few people confirmed this that they feel the same with this car, so it is not only some weird "placebo". I would actually expect that with full tank the car should feel a bit worse because it is simply more weight to carry. But it is the opposite. Why is that? I can only think of the fuel pump, maybe it is worn-out after all these years and higher level of fuel in the tank makes its life easier? Thanks for any thoughts on that.

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