Just finished my first tank of gas in my 2023 ES300h. Drove very conservatively, breaking it in gently. Very pleased with 45 mpg. I expected it to be less where the car is brand new, so getting that was a nice surprise.

 

In my new 23 ESh I was getting 49 mpg driving conservatively in normal mode for a good ~1000 miles. Now 2000 miles later I'm getting 42 mpg. I know I'm driving it harder than before, although still conservatively, I rarely go beyond the eco zone into the power zone on the acceleration meter, and even if I do it's only just, so I'm not winning any drag races.

 

Are you in a cool climate? I’m in Texas and was getting 41-44 mpg on a tank until summer came with temperatures over 100F and now I’m lucky to get 35 mpg.

2023 ES300h Premium on 18” wheels 10,000 miles purchased in December

 

Yeah currently it's ~32f in the morning when I'm driving to work, and around 52f driving home, and I'm sitting at 41-42 mpg, but when I got the car it was more like 41f in the morning and 61f driving home, 48-49mpg. Although another important thing that slipped my mind is that since the colder mornings I have been using the remote start to warm up the car for 5-10min, and the tire pressures have dropped a touch when cold. So I guess along with the slightly more spirited driving, those three factors could explain the drop in efficiency.

 

It might also be net uphill going to work, and net downhill on the way back.

 

Toyota and Lexus are accurate with their EPA estimates. I have a bit of a heavier foot, but for the almost 18k miles I've had my 22 300h F Sport, I've gotten 43mpg combined. Very happy with the mpg and my last fill up I got 45.3mpg. (Tracked with Fuelly app vs the onboard computer which I find to be pretty generous with mpg)