Scotty, I have a 2015 Toyota Corolla Sport automatic CVT transmission w/ 105,000. I just had the 100,000 mi maint. just done at the dealership 30 July this passed Friday, spark plugs replaced, Tranny CVT fluid complete exchange TFlush , and break fluid changed, new tires Goodyear Eagle Sport All Season, new 7 year battery. Now I am getting 10 mi. per gallon less than I did before I had the work done. What could possibly be wrong? I have an appt. on this Thursday Aug 6th.
Much thanks,
Ron
{black}:idontknow:
In the city? On the highway? Any other symptoms? Which tyres did you have on, before?
Did they use the correct engine oil for your engine? If they did, possibly a combination of new tyre tread & all season tyres.
With that said, check your cold tyre pressures to make sure they are correctly inflated -
It's the new tires that cause the lower gas mileage. It happened to me when I went from the expensive Michellin tires to the cheaper Firestone tires.