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Compared to the OE tire (the one that came on the car from the factory), those Toyo's are probably worse for fuel economy - but they will probably be better for wear and traction.
Just an FYI: Tires have a technology triangle involving treadwear, traction, and fuel economy. In order to get gains in one area, one or both of the other areas has to be sacrificed.
Car manufacturers generally specify low levels of rolling resistance, so OE tires generally don't wear well, and sometimes have poor traction.
Beware of tires labeled LRR (or something similar - in this case Eco). That means better fuel economy compared to tires with similar wear and traction levels. It does NOT mean low levels of RR.
And lastly, expect to take a hit in fuel economy when you replace wornout tires. New tires have worse fuel economy that the same tire when it is worn out. It has to do with the volume of tread rubber, new vs worn.
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