Record your Prime and Gas Fill-ups

Depending on the tires, but yes they can.

 

I haven’t found anything that indicates it makes a huge difference. The difference could be 5 to 6 mpg on the high end from what I’ve researched. The tires I put on are not performance tires, and offer comfort while also being efficient.

 

From my POV, on the Prius 2, when I changes the OEM tires with the Toyo LRR (can't remember the exact name), I had an improvement of 0.3 l/100 km.

Considering they lasted me 90.000 km, it saved me 270 litres, at an average of 1.7 € per litre, that's 475 €. The cost of the tires.

 

First fillup on my "new" Prime:

620 miles
8.518 gallons
72.79 MPG

Dashboard said 71MPG for the trip so it was pretty close!

 

I think Toyota finally wised up with gen 5, that exaggerated mpg display doesn't win them brownie points with anyone, and just looks what it is.