Reason for improved gas mileage???

My 2020 just reached 50,000km. I took a trip through the mountains last week and noted a 5% improvement in mileage. Any reason for mileage to improve with wear???

 

Could be many things. Might have been warmer which usually means better mileage. Maybe different driving speeds. Tail or headwinds. All those can impact. 5 percent is an easy number for just one trip. I came through Colorado mountains the other week and averaged 24. Usually get about 20-21. No real idea why. Next time I go probably be back around the usual.

 

So like 21 mpg instead of 20? What's your avg mpg? Was the trip all highway? When we're talking about 5% that's pretty negligible that it could be you were driving more conservatively due to your surroundings?

 

I should have elaborated. Trip to/from my cabin. same route for many years. No tailwind (in mountains, so crosswinds from time to time). I drive same way all the time too old to change).

 

Margin of error.

Heat load on the ac system, ambient air temps, fuel quality of the week, who knows.

 

Additional variables: tire pressure can make a very big difference, even +/- 2 or 3 PSI.

 

5%! You are on to something, hopefully are able to figure out the mystery and unlock this savings for all!
Just joking,, 5% on one trip is nothing, just infinite amount of variables on your side this time.

 

Where you just going down hill???????

 

You finally cooled down on the thai food

 

Maybe that TacoBell combo meal flushed your system out real good. Lost some weight?

 

New tires?

 

5%? My MPG will vary more than that on my normal commute depending on the day despite using cruise at 70 and no interruptions. Last night my trip meter said I got 23.3 on my way home when I usually only see 20-21.