[BlueTangClan]

So far I've filled up my tank 3 times and all 3 times it displayed around 430 miles per tank. However, on all 3 occasions I actually only got around 360 miles. I drive 50/50 city/hwy. Why is the calculation so far off? Is the 430 miles based on the max I can get on highway driving only?

[Trian]

Not max, but what the computer/calculator considers better than average based upon a number of statistics

[Bbb34]

This gets recalculated frequently based on the type of driving you do.

I'm not sure if it's F10 or another manual I read in the past, but software algorithm goes something like "check the type of driving/consumption every 15(ish) miles, check the amount of gas left, and estimate the range based on that". Logically if you're cruising at 65mph for hours, the estimate will be "better" than stop and go driving.

It works exactly the same in every vehicle, regardless of brand.

[ezaircon4jc]

Originally Posted by Bbb34

This gets recalculated frequently based on the type of driving you do.

I'm not sure if it's F10 or another manual I read in the past, but software algorithm goes something like "check the type of driving/consumption every 15(ish) miles, check the amount of gas left, and estimate the range based on that". Logically if you're cruising at 65mph for hours, the estimate will be "better" than stop and go driving.

It works exactly the same in every vehicle, regardless of brand.

I believe I read somewhere the F10 recalculates every 25 miles. I got gas leaving my MIL's house and the DTE showed something like 418 miles. We jumped on the freeway about 3 miles away and headed home (80ish miles away); setting the cruise at 78ish. About 45 miles later the DTE still showed 418 miles. After a few days driving around Yellowstone I saw this (2012 535i)!!

[Bbb34]

Originally Posted by ezaircon4jc

I believe I read somewhere the F10 recalculates every 25 miles. I got gas leaving my MIL's house and the DTE showed something like 418 miles. We jumped on the freeway about 3 miles away and headed home (80ish miles away); setting the cruise at 78ish. About 45 miles later the DTE still showed 418 miles. After a few days driving around Yellowstone I saw thi!!

Attachment 1597913

Right sometimes you will see crazy numbers like that and in my experience they are pretty accurate actually (if you continue driving exactly the same way (cruising) after you filled up) .
As for algorithm used, frequency of check of course varies from brand to brand, but same general idea applies.