2018 Toyota Camry Hybrid

SINCE I BOUGHT THE CAR IN AUGUST 2018 UNTIL NOW, I HAVE BEEN DRIVEN IT IN NORMAL CONDITION, BUT HAVE NEVER GOTTEN FUEL CONSUMPTION ABOVE 41 MPG. THE STICKER ADVERTISED AT 48 MPG OR HIGHER FOR HWY/LOCAL. TOYOTA DEALER HAS RAN DIAGNOSTIC ON THE VEHICLE BUT REFUSE TO ADMIT THE FALSE ADVERTISEMENT. I WOULD LIKE TO KNOW IF OTHER OWNERS HAVE SIMILAR PROBLEM. PLEASE HELP ME GET THIS PROBLEM INVESTIGATED.

VEHICLE IN MOTION GETTING ONTO FREEWAY. PRESSING GAS PEDAL TO ACCELERATE CAR NOT ACCELERATING BEYOND 40MPH AND FELT LIKE IT WAS BEING FORCED TO ACCELERATE LIKE THERE WAS DRAG AND PULL. CAR JERKED FORWARD A FEW TIMES AS IF IT WAS BEING CHOKED ON GAS. THE HYBRID DIAL WAS BOUNCING ERRATICALLY AS IF IT WAS CONFUSED AND CAR WAS NOT ACCELERATING BEYOND 40 MPH. TOOK IT TO DEALER 1X THEY COULD NOT REPLICATE ISSUE, CALLED TOYOTA CARE AND WAS TOLD ERROR NEEDED DUPLICATING TO BE ADDRESSED. BOTH INCIDENCES HAVE OCCURED WHILE GETTING ONTO A FREEWAY AND PRESSING GAS PEDAL TO MERGE ONTO THE FREEWAY. THE TEMPERATURE OUTSIDE BOTH TIMES WAS ABOVE 90 DEGREES AND THE CAR HAD BEEN AT REST FOR AT LEAST AN HOUR. I TURNED OFF THE A/C TO REDUCE AMOUNT OF POWER CAR WAS USING UP IN ORDER TO HELP WITH ACCELERATION. THE FIRST TIME THIS HAPPENED IN SEPTEMBER OF 2019. I WAS ABLE TO GET THE CAR TO 50 MPH AFTER ABOUT 15-20 MINUTES AND WAS DRIVING WITH HAZARDS ALL THE WAY TO THE DEALERSHIP. THE SECOND TIME WHEN GETTING ON THE FREEWAY IT WAS NOT BUSY AND WAS TRYING TO ACCELERATE TO 65 MPH, GOT IT UP TO 40 MPH FOR ABOUT 20 MINUTES THEN HIT TRAFFIC AND WAS GOING ABOUT 17 MPH THEN EXITED THE FREEWAY AND TOOK THE STREETS.