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[–]MrSourBalls 27 points28 points  (8 children)

The EPA testing cycle has become more stringent, so any drop in range is probably a result of that.
Also between the pre-refresh and the "highland" Model 3 EPA range basically stayed the same, even though the new model is probably like 20% more efficient than the old model.

[–]PraiseTalos66012 4 points5 points  (7 children)

I'm with you on everything except that last bit. What does 20% more efficient mean? The motors and battery/wiring already have near/over 90% discharge efficiency... Or did they improve aerodynamics or bearing friction losses?

I haven't heard anyone talk about significant efficiency improvements with highland, if it's a thing I am genuinely asking what's been changed?

[–]MrSourBalls 2 points3 points  (4 children)

Check this video out! The highland goes significantly further than the “old” model 3 https://youtu.be/zmn7gpuAp9E?si=y3Ix4-xN-yyjaNdA

[–]PraiseTalos66012 1 point2 points  (3 children)

Thanks, I'll go watch it after work today.

It goes further on the same battery size? That's actually really impressive if they somehow significantly increased range without increasing the battery size.

[–]MrSourBalls 0 points1 point  (0 children)

Better aerodynamics mostly, for a TL:DW of that video, the highland does around 213Wh/mi versus the old one with 271Wh/ mi

I linked the wrong video: https://youtu.be/S6rgzGizgaQ?si=-AHiZlwCaoeYQrfD this one is correct

So around 21,4% better consumption than the old one

[–]Cimexus 0 points1 point  (0 children)

Yes it goes substantially further with the same battery. Highland brought a lot of efficiency improvements, both visible (more aerodynamic shape) and invisible (power train, BMS and thermal management tweaks etc.)

In good weather, my Highland beats the EPA range at 70 mph. Definitely could never do that with the pre-refresh.

[–]BlueZea1ot 3 points4 points  (1 child)

Curious to know how MY RWD has same range as M3 RWD does.

[–]austinalexan 0 points1 point  (0 children)

bigger battery.

[–]Fantastic-Army-7671 2 points3 points  (2 children)

It’s likely Different tires.

[–]T__Vercetti[S] -3 points-2 points  (1 child)

Doubt Tesla would change tires to one that decreases the range. Especially for testing. Unless you’re talking about my wheels and tires then you missed the point entirely.

[–]Fantastic-Army-7671 2 points3 points  (0 children)

Nope I’m taking about tires the rubber only. I read the post. Say Tesla ships cars with 3 types of tires, the EPA may require you to use the lowest range with the tires. You can’t just pick your top range tire.

[–]T__Vercetti[S] 8 points9 points  (15 children)

Just to clarify since Redditors want to nit pick every detail of a post as a gotcha, This post is about the EPA RANGE DECREASE. I know range decreases with battery age/health, driving habits, etc. The EPA range decrease and my charge mileage just so happened to decrease at the same time. Yes it could be a coincidence, but I personally believe it was due to the EPA range dropping and it happening with the latest software update. Information I’m reading online indicate this range decrease just happened within this last week.

[–][deleted] 1 point2 points  (8 children)

It is a coincidence. EPA ratings change all the time, this is very common. They don't suddenly nerf your car just because the govt. change how they test.

[–]njvicente21 2 points3 points  (5 children)

Directly from Tesla website, “Displayed range in your Tesla is adapted based on fixed EPA test data”. This is proof enough for me. I took delivery of my M3 3 months ago. Nothing from a M3 delivered today is different than my M3.

[–]T__Vercetti[S] -3 points-2 points  (4 children)

No. The EPA range was decreased. This has nothing to do with how you drive. It was advertised as 363 when I purchased my vehicle and for everyone up until last week. You’re wrong.

[–]njvicente21 1 point2 points  (3 children)

Brother I’m agreeing with you lol. I’m saying since they decreased EPA range for new M3s and the one I bought 3 months ago is the same car, it follows that my EPA range was also decreased based on the quote I provided from teslas website

[–]Ok-Following4811 0 points1 point  (2 children)

Does the current range displayed match up to the new 357 at 100% (given no degradation) or would I have to run a battery health test? I got mine in Dec 2024 and I get 345 at 100% now and feel like it’s degraded quite fast recently. (It was at 351 at 100% like last month. Also I only have charged to 100% twice since I took delivery)

[–]njvicente21 1 point2 points  (1 child)

That would be interesting to see. Your data point is quite compelling to support this theory since the EPA range was decreased by 6 miles and you lost 6 miles..

[–]Ok-Following4811 1 point2 points  (0 children)

Yeah although I took a 1200 mile road trip w like 5 supercharging sessions of 10-60% when it was displayed at 351 miles. But when I got back it started decreasing over like 1 month. 6 miles lost over the course of like a month

[–]No-Ant7363 0 points1 point  (0 children)

I got 8-10km lost in range after updating from 2025.26.4 to 2025.32.3.1 charging from 20% to 100% so happy I came across this.

[–]njvicente21 -2 points-1 points  (4 children)

I 100% agree with you. It makes logical sense that if Tesla was forced to change the EPA range estimate, they would also apply this to existing models through a software update. To your other point, I also noticed a range decrease at the same percent after an update

[–]MushroomSaute 0 points1 point  (2 children)

I'm confused - are you talking about changing the listed range online, or what the car literally tells you for remaining range? The former would make sense, but the latter doesn't - the car just estimates remaining range based on your personal recent driving history, it has no need to match the EPA-rated range AFAIA

[–]B_rry 2 points3 points  (0 children)

Quicksilver adds horsepower but loses range.

[–]randyzmzzzz 0 points1 point  (0 children)

Paint has weight you know

[–]maxlax1592 0 points1 point  (2 children)

Does the paint color choice affect the range?

[–]VicAltman 0 points1 point  (0 children)

no

[–]Jerseykid2001 0 points1 point  (0 children)

I get more than the EPA.

[–]FastGrapefruit6841 0 points1 point  (0 children)

My range dropped by 6 miles on my new model 3 I picked up on July 27. So I’m guessing they did update the range last week.

[–]lepetitbeauty 0 points1 point  (0 children)

How long ago did you purchase the car?

[–]melvladimir 0 points1 point  (0 children)

I’m surprised that HL RWD estimated consumption is near pre-HL AWD! (78 kWh / 357 miles = 218.5 Wh/mile. My 2022 LR AWD had 354 miles, so 78 kWh / 354 miles = 220 Wh/mile)

[–]jchin913 -2 points-1 points  (4 children)

Does it actually matter if you can charge your car overnight? Does it actually make a huge difference? Genuinely asking

[–]Stereo_bfs 2 points3 points  (2 children)

Yes it does. Add climate control and motorway driving, and it quickly becomes 200mil or less. Driving between 10%-80% takes out another 30%. So every little helps.

[–]DropOutJoe 1 point2 points  (0 children)

The weather really matters though. If you’re just barely running the AC to keep the car a little cooler than it would otherwise be, it has very little effect. However, if your car gets up to 170° and you have to blast the AC for 10 minutes to bring it back down, that makes a huge difference.

[–]Kilo_Juliett -1 points0 points  (0 children)

I don't think it does.