Unexplained reduced range

[LongMynd]

Thanks for the comments.
I'll try to remember to post an update.

Charles

[colonelpurple]

So my question now is: over what time period does the ID.3 monitor consumption in order to calculate a predicted range?
Does it depend on your driving pattern and driving conditions over the last hour, the last day, or what?

I sure hope that the change from 360 to 243 does not reflect battery degradation, but just driving conditions.

Charles

The ID3 predicts based on your past behaviour, it does not extrapolate forward

It has three average consumptions:
1. Since start
2. Since charge
3. Since new

I am not sure how it combines them to give a prediction, but there is some algorithm

I find it heavily influenced by what i did yesterday, and somewhat by what I've done since the car was new

What is really interesting is how it changes as we go into winter. I am quite excited to see the range inevitably going down

[Daveion]

From my experience and posts over recent months its maybe less than 50 miles with the most recent in the guessorithm accounting for the biggest proportion of the prediction.
Not degradation, just change in ambient and journey type!

[Deleted User 192]

The ID3 predicts based on your past behaviour, it does not extrapolate forward

It has three average consumptions:
1. Since start
2. Since charge
3. Since new

I am not sure how it combines them to give a prediction, but there is some algorithm

I find it heavily influenced by what i did yesterday, and somewhat by what I've done since the car was new

What is really interesting is how it changes as we go into winter. I am quite excited to see the range inevitably going down

It also changes in real time if you switch between Eco/Comfort/Sport - not by much though.

[LongMynd]

I promised an update on our French trip.
You may remember that from new with general UK driving we had a predicted maximum range of 360 miles. After battling through horrendous rain at 110 kph in France the maximum range fell to 243. Our last day in France we did a couple of hours a bit more gently (90-100 kph with patchy mist) and since then have had five days in the UK. Predicted range is now 290.
Tronity have a rather sinister looking graph called battery degradation, which suggested that our battery had degraded by over 30%, so the car would become a dead brick in under a year. (see graph). A much more sensibly labelled graph describes "range" and that suggests that we have recouped much of what we lost and should stabilise at near 300 miles. That I am happy with.
As an extra tit-bit we did one trip down the mountain and back up again. Going down used 2% of batter and our "range" increased by 39 Km. Going back up the hill used 13% of battery.
So Hills, speed & rain.

[Andreas]

Yeah those graphs... I'm not sure what they measure or mean.

All the best

Andreas

[Deleted User 192]

Not sure what any of those graphs prove (or don’t prove).

[G43FAN]

If anyone can pick through this and understand it let me know..

"The battery degradation information in TRONITY should be interpreted as an indicator, as we take the battery charges as a basis and the calculated ranges. Of course, both are slightly impacted across the seasons. However the overall goal remains, when you take a longer period of time, you can derive an indicator of a possible battery misbehavior or a major degradation."

https://help.tronity.io/hc/en-us/articl ... on-Monitor

[beacon39]

I think the ID.3 calculates remaining range using relatively recent data. Why would it calculate the range based on driving circumstances of a month or a year ago? It must surely assume you're going to carry on driving as you were at the last calculation.

I took my car up to the base of the highest mountain in S Wales from Cardiff, a climb of over 400 m. The distance travelled was just over 30 miles in about 1 hour. My range reduced by almost 60 miles. On the return trip, I added 9 miles to the range.

[LongMynd]

If you look at the graph of range, it would seem that the "range reduction" occurred pretty quickly. We drove that fast and in awful rain throughout the 2nd and by the 3rd the ID predicted range was right down. So range reduction reflects very recent driving, maybe the lat 24 hours.
Interestingly "range gain" seemed to occur more slowly between the 10th and the 15th we had no very high speed driving and climbed no mountains.
I suppose that in fairness to VW this is the right way round. We don't want to be caught out with a flat battery so it is better to underestimate the range than overestimate it. And if our driving style and driving conditions fluctuate then it is likely that the car will be tending to "play safe".
Charles