[kendallg]

The car can't know that your previous drive was flat terrain and moderate speeds, while your upcoming trip is on the freeway and will be crossing a mountain pass (or two).

Well, actually, that's exactly how Tesla treats it. When you enter a destination in the navigation it represents the SOC on arrival according to the terrain that will be covered, the projected usage of climate control, the driving style and a number of other factors. Only way you get to destination having deviated from that figure is if you accelerate like a crazy person at every light resulting in excess energy usage (or potentially if you drive to the mountain and encounter a 50 degree drop in temperature). Otherwise I tend to arrive at my destination with a higher % than predicted because I just love beating the computer 😬, and because the prediction on climate usage tends to be on the high side.

From my perspective, it's this type of data that's beneficial to novice EV drivers. It's clear, it's concrete and it leaves very little room for interpretation. I.e. 22% on arrival after a 2hr drive is based on what's ahead of you + data from how you drove prior.

 

[kendallg]

The GOM offers an algorithmic analysis of a user's driving habits. Not sure yet what to think about this. Might be more concerned if finding my driving habits have been used to create a user profile that is sold to third parties.

Not sure I'd even it call it that sophisticated. The figure represented by the GOM is based on the immediate past, though I admittedly can't represent if that's 5 miles, 15 miles, 5 mins or 15 mins. But what's for sure is that the range that you will be provided will depend entirely on what "just" happened in regards to driving style and condition.

So, if you've just driven up a mountain the range you'll see represented will be super low (relative to actual battery capacity) regardless of your driving history. While if you've just driven down a mountain the range represented will be super high (relative to actual battery capacity) regardless of your driving history.

My recommendation on the Bolt is to use the bars behind the GOM to get a relative idea of battery SOC and derive your calculations from that. Only use the GOM figures when driving in your day-to-day super predictable conditions (i.e. commuting to the same place each day). Otherwise, pay for ABRP premium and use it through CarPlay to get a Tesla-like representation of SOC at destination.

 

[kendallg]

This is true when in California. Not in Canada, in winter. Driving a Tesla in winter here means the estimated % SOC at arrival is 15-20% more optimistic than the reality. No need to drive like crazy or see a difference in temperature between the start and the end of the trip. Although this could very well happen and Tesla GOM sucks big time like every one else in these conditions.

Tesla literally uses temperature data and even change of elevation in the data used to compute the range and SOC on arrival at a destination. This article dates back to 2019 and already talks about it. For more current info, Tesla's owner's manual goes into quite a bit of detail as to what goes into the calculations.

In short, Tesla is using environmental data to inform how it calculates range and predicted SOC, so those living in super cold climates, like in Canada, will see that incorporated in the data presented to them with very strong accuracy.

Do not get me wrong, I'm not a Tesla fan boy who thinks that Elon does no wrong (because yes, I know that's what will be interpreted), but I do think range calculations and accuracy between Tesla and the rest of the EV market are two different worlds entirely. After 5 years in a Bolt, and after skepticism when I took delivery of my Model Y, I'm massively impressed with the technology in this vehicle and how much simpler it makes EV adoption for a novice (here I'm specifically referring to accuracy of range calculations and onboard navigation including charging stops).

For those who don't wish to click on the Tesla URL:

" When navigating to a destination, Model 3 helps you anticipate your charging needs by calculating the amount of energy that remains when you reach your destination. When navigating, the map displays this calculation next to the Battery icon on the turn-by-turn direction list (see Navigating to a Destination). When the turn-by-turn direction list is compressed, touch the top of the list to expand it.

The calculation that predicts how much energy you will use is an estimate based on driving style (predicted speed, etc.) and environmental factors (elevation changes, wind speed and direction, ambient and forecasted temperatures, air density and humidity, etc.). As you drive, Model 3 continuously learns how much energy it uses, resulting in improved accuracy over time. It is important to note that Model 3 predicts energy usage based on the driving style of the individual vehicle. For example, if you drive aggressively for a period of time, future range predictions will assume higher consumption. Also, if you purchase a used Tesla vehicle, it is recommended that you perform a factory reset (Controls > Service > Factory Reset) to ensure the predicted energy is as accurate as possible."

 

[kendallg]

@kendallg Tell this guy 👇 the above.

You're right, I'm sure they haven't made any progress whatsoever in the 2 years since this video was posted.

 

[kendallg]

No, I only say that in a changing environment, what was predicted @ start isn’t what you will see at the end. That’s the point many here don’t understand. They see at the start of the trip 230 miles range and then complain after two hours of driving that the GOM shows they can only drive 180 miles before empty. Then come here and complain how stupid is the GOM in the Bolt EV. Duh !

But the Bolt GOM is stupid, because the data it represents holds absolutely no relevance to the road ahead. I mean, I get that you dislike people dissing on the Bolt, but it's GOM is just not user friendly. As pointed out by someone else in this thread, you've got experienced EV drivers getting in trouble because of it, there are new EV drivers getting in trouble because of it. How much user feedback do you need before you start blaming the product rather than the user?

The majority of drivers who sit behind the wheel of ANY vehicle, will blindly trust the information presented to them. And the fact is that they've gotten used to quite significant accuracy in what they were presented by ICE vehicle's gas gauges. The ignorance to deliver a product that acknowledges that user story is a major failure by the manufacturers. All they need to do is patrol this site for the number of GOM confusion related threads to understand they're missing the mark by a long shot.

 

[kendallg]

So cut the crap, mr Tesla fanboy.

Boy did I know that comment was coming. You call me a Tesla fanboy, which I am not, while failing to acknowledge that you communicate like a Bolt fanboy. Lack of self-observation is mind-blowing.

But why I bother even exchanging with you is the most mind blowing. This has happened on multiple threads. You're always right. You always have the right perspective. Others are just dumb and ignorant. With you it's not exchange of ideas or respectul communication. It's your way or the highway. I'll take the highway on my own accord.

 

[kendallg]

Wait what? How is it more accurate? And yes it is a problem that people blindly trust that info. The reason they blindly trust the ICE DIC info is because they don't pay attention at it. Gas is abundant and hassle free. Put those drivers in an EV and the dynamics changes (in regard to the relation drivers have with the info in front of them) but it is still the same physics

What I'm referring to is the fact that, in most cases, gas gauges will show consistent reading regardless of temperatures and the fact that you just went up a hill. Of course there's variation in the range that's represented in association with the fuel capacity, but generally that isn't affected by it being 30 degrees outside. Thus my observation on accuracy.

Your point on gas being abundant is an excellent one and actually corroborates my perspective that EV manufacturers should be delivering far greater accuracy in the range information presented to the driver. Coming from years upon years of "oops, I'm on the reserve I'll pull into the next gas station" it's hard to expect that people will easily change to "Oh, I have 15 miles of range indicated but a big hill ahead of me to get home, I should stop to charge". Especially since it's not that obvious to find a place to charge!

 

[kendallg]

It's a given that many of us on this Bolt forum, are Bolt fans. That's at least part of the point of this forum.

Personally, I thought it would be a safe place where I didn't think my choice of car would be challenged so much, primarily by Tesla fans. I'm certainly not on any Tesla (or any other car specific) forum, talking up my Bolt, and trashing Tesla. I leave them be.

I'm on this forum because I spent 5 years driving a Bolt. I now have a Tesla. I keep coming here because I believe that the real world perspective I have on both vehicles is valid material to provide insight to others.

I, like you, thought this would be a safe place to exchange ideas. What I do perceive unfortunately is that there is a significant level of hostility to anything said that represents Tesla as having benefit over the Bolt. This to the point of quite ludicrous commentary in some instances. I believe this today, I believed it 3 years ago when I was not yet anywhere near having a Tesla. I value everyone's perspective, and I understand that a number of Tesla nuts have clearly skewed members perspective on positive opinions of the brand being represented here. But do you think we could all water down our spiciness a little bit? Sometimes things are clear cut legs up from one brand (i.e. the Bolt's one pedal driving being the uncontestable best in class for a number of years), but others are subject to very subjective observation. There's lots to be learned from every manufacturer and for us all as users and "early-adopters" to share with each other without the immediacy of judgement I see thrown around on here far too regularly now.

So I'm apologetic if my comments were perceived as arrogant because they favor Tesla in an aspect of it's technology, but I do wish a number of people on here would also take a step back and look at how quickly they escalate a Tesla positive comment into "S*** U* Tesla fanboy".