AlanSubie4Life
Efficiency Obsessed Member
Wish I'd discovered this article before deciding to purchase a Tesla. Posting for the benefit of others for whom range is important in their purchase decision process:
I'm sorry you missed this information. It's extensively covered here.
Tesla and Polestar achieve this primarily by using an additional 3 drive cycles its competitors do not to "earn" a higher EPA range.
Yes, that referenced article about the adjustment factor has been linked several times here, and prior to that, the exact method by which Tesla was increasing the rated range on their more recent 2021 models has been well described in this specific forum.
This extra 7% improvement on range over competitors who prefer to use the 0.7 factor is allowed by the EPA. Everyone has their own opinion on whether it's a good idea or not. I tend to think it leads to confusion and disappointment, and I think all EVs should be judged on exactly the same basis, and this latitude manufacturers have to use or not use the 0.7 factor disrupts that. But those are the rules.
You have to know exactly how the EPA numbers are calculated to be able to understand it and account for it (hence my "range optimism" category on my spreadsheet on the constants page). It trips up tons of Tesla owners.
Tesla vehicles are not even the most efficient at kWh/100 miles, per the article, raising questions about Tesla's potential to continue dominating the EV market as more established vehicle manufacturers with higher build quality and longer market experience move into the space.
This is a bit questionable. Note your 2021 AWD vehicle is not in the list!!! (Edmunds Tested: Electric Car Range and Consumption | Edmunds) The ones that definitely will be more efficient (Hyundai, Mini, Bolt, Kia) are not in the same class, arguably - and I would consider measuring their stopping distance as well (really low rolling resistance tires can be dangerously slippery).
Also note that the Model 3 Performance in the list is a 2018. When was this test conducted? Not really fair to compare a 2-3 year old test result with current test results. (The Model 3 efficiency has improved substantially over the last two years.)
I actually think that the 2021 Model 3 AWD, which would probably get 26kWh/100mi in this test, with a range of about 290 miles, is quite competitive when put alongside its competitors. (Mach-E apparently 33kWh/100mi but not sure if that is the best it can achieve or whether that was with sticky tires.)
Total range of 250 miles is what this vehicle can achieve when new, on relatively flat roads, in temperate conditions.
Yes, that's correct as an expectation, and well known here. I think with your vehicle with a little care you could probably do a little better than that, in ideal conditions. With a little traffic on the freeways, I'd expect you could get to nearly 300 miles (maybe 290?).
I take long road trips, and believed the vehicle would achieve about 300 miles between charges. It cannot.
No, it can't. Not reasonable to expect that.
I take long road trips, and believed the vehicle would achieve about 300 miles between charges. It cannot. This vehicle requires recharging every 200 miles or less on highways when driving at the speed limit of 75 MPH or a few MPH faster.
That's correct, on a road trip you should expect to charge every 150-200 miles. That's normal and it works really well - as long as you can access a charging station without waiting (much, much more important than the charging interval in my opinion).
Trips to farther destinations will likely require a recharge every 2-2.5 hours. Not what I thought I was buying, not how I like to drive, and not what Tesla markets aggressively in terms of range performance.
Yes, that's correct.
Why don't the EPA range numbers correlate with the EPA Consumption numbers? Is it due to degradation or the battery size used for calculation being different? Strange.
They drive the vehicles to 10 miles left. That makes these measurement subject to differences in how manufacturers provide margin at low energy. For Tesla (Model 3), this leaves about 7% (4.5% + 2.7%) of the battery energy remaining. No idea how it affects other manufacturers.
I think they should measure DC consumption somehow (also difficult because depends on how manufactures display it), and divide it into usable battery capacity provided by the manufacturer. Also subject to difficulties though. Their method is reasonable in terms of comparing real world ranges of vehicles directly - that comparison is valid, but it's not a great way to compare performance relative to the EPA rating.
In general, particularly on 2021 vehicles, I think the rated range numbers advertised will be very optimistic for Tesla. Mostly due to that 7% higher scaling factor. I don't think that's great for Tesla, but they're in it to sell vehicles. But I also think that fundamentally their efficiency is still extremely competitive vs. other vehicles - and for road trips, they have the Supercharger network, which is still likely superior to the other networks (try taking a road trip to the Dakotas in another type of EV), though the other networks are fortunately improving.
They sent an email and PDF showing motor usage represented 96% of total electricity usage.
Doesn't really answer the question of whether your vehicle has an undiagnosed rolling resistance problem, or whether your conditions were particularly difficult. But at least significant heat use can be ruled out (which isn't too surprising - we'd expect at most 1000W average or 16Wh/mi at 60mph average.)
Learning how road trips work in a Tesla is an experience. But if you were expecting to stop just once every 300 miles, you're definitely going to be disappointed. Expect 150-200 miles, with very quick stops (if there is no waiting) if you're using 250kW Superchargers and optimizing your charging strategy (10-70%).
I hope you give the vehicle a chance. It's really not that big a deal as long as charging stations are available without waiting when you get there. I certainly understand the disappointment at not getting what you expected, and I would say anyone getting a Tesla needs to do careful research to understand what they're actually getting.
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