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Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

tesla.com

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Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#41

Post by walrus01 »

Joky wrote: post #32
steelframe wrote: post #18

I've been following a multi-month discussion over in the r/electricvehicles subreddit about EPA range. There's a growing consensus that something is very wrong with it. Here are a couple of the articles that got some discussion in that sub: https://insideevs.com/news/407807/eletric-car-real-world-ran... https://www.caranddriver.com/reviews/a30874032/porsche-tayca... As someone who has owned both a Tesla Model X and o…

In my experience: I manage to roughly match the EPA rating on the freeway driving at 65mph (it depends on the road, on the temperature, on how much stuff/people are in the car, etc.), but it goes down quickly as you drive faster. This table illustrates it fairly well: https://teslike.com/

I can duplicate pretty much the same effect with cruise control in my gasoline powered car. If I go on a 5 hour freeway road trip with cruise at 65mph and spend 95% of my time in the right lane, there's definitely a 2-3 mpg improvement in fuel consumption, vs 75 mph. At that point it becomes a tradeoff in time vs money spent on extra fuel, and need to get somewhere in a hurry.

Over a 4.5 hour period if I can cruise at 75 mph, I will be 44.5 miles ahead of another car which departs at the same time, for the same destination, at 65 mph.

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#42

Post by pbreit »

steelframe wrote: post #18

I've been following a multi-month discussion over in the r/electricvehicles subreddit about EPA range. There's a growing consensus that something is very wrong with it. Here are a couple of the articles that got some discussion in that sub: https://insideevs.com/news/407807/eletric-car-real-world-ran... https://www.caranddriver.com/reviews/a30874032/porsche-tayca... As someone who has owned both a Tesla Model X and o…

Teslas are designed to perform better (and EPA is designed to evaluate) NOT on freeways (ie, where most people drive)(mainly due to very good regenerative braking).

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#43

Post by natch »

steelframe wrote: post #18

I've been following a multi-month discussion over in the r/electricvehicles subreddit about EPA range. There's a growing consensus that something is very wrong with it. Here are a couple of the articles that got some discussion in that sub: https://insideevs.com/news/407807/eletric-car-real-world-ran... https://www.caranddriver.com/reviews/a30874032/porsche-tayca... As someone who has owned both a Tesla Model X and o…

It’s not just about speed, although speed has a lot to do with it (with efficiency dropping with the square of the increase).

It depends also on how much you use the available acceleration features.

As you will know there is quite a range of acceleration available, from barely pushing the pedal and matching normal cars, to putting the pedal about 1/4 of the way down and smoking even most fast cars, to putting the pedal down more than halfway and having a beast in your hands.

I’m sure the EPA is pretty conservative and this is where the literal meaning of ymmv comes into play.

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#44

Post by natch »

rootusrootus wrote: post #30
steelframe wrote: post #18

I've been following a multi-month discussion over in the r/electricvehicles subreddit about EPA range. There's a growing consensus that something is very wrong with it. Here are a couple of the articles that got some discussion in that sub: https://insideevs.com/news/407807/eletric-car-real-world-ran... https://www.caranddriver.com/reviews/a30874032/porsche-tayca... As someone who has owned both a Tesla Model X and o…

There's always a lot of folks claiming to get equal to or better than the rated range on the highway, but I will add my anecdata in for however much it's worth. I have a Model 3 Performance and it does not get anywhere near rated range, regardless of weather. I more realistically get 200 miles of range, not 300.

But the fun... you probably drive like I do.

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#45

Post by Reason077 »

pkulak wrote: post #29

Wow, they are doing brake blending now? I'd be interested to know how good their implementation is. I always assumed they refused to do it because it's so damn hard to perfect.

Tesla doesn't do any blending of the brake pedal. Pressing the brake pedal always applies the friction brakes only.

However, since a software update last year, they have had a one-pedal driving mode (Stopping mode "Hold"). In this mode, the vehicle is able to come to a complete stop without using the brake pedal, using a blend of re-gen and friction brakes to do so.

In practice, it means it uses re-gen down to a very low speed (< 5mph), then applies the friction brakes to achieve a complete stop (this also doubles as a "hill hold" - the brakes won't release until you press the accelerator again).

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#46

Post by sgc »

walrus01 wrote: post #41
Joky wrote: post #32

Earlier quoted context omitted.

In my experience: I manage to roughly match the EPA rating on the freeway driving at 65mph (it depends on the road, on the temperature, on how much stuff/people are in the car, etc.), but it goes down quickly as you drive faster. This table illustrates it fairly well: https://teslike.com/

I can duplicate pretty much the same effect with cruise control in my gasoline powered car. If I go on a 5 hour freeway road trip with cruise at 65mph and spend 95% of my time in the right lane, there's definitely a 2-3 mpg improvement in fuel consumption, vs 75 mph. At that point it becomes a tradeoff in time vs money spent on extra fuel, and need to get somewhere in a hurry. Over a 4.5 hour period if I can cruise a…

For ICE cars, it depends on what the mfg has optimized for. I had an Infinity years ago and I remember that it was optimized for 70mph precisely as per the owner's manual. Higher or lower speeds would be less efficient.

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#47

Post by person_of_color »

kenhwang wrote: post #10

I wonder how much of this will translate to real world driving. Teslas have generally significantly underperformed in real world range compared to EPA. This reads very much like they're optimizing more towards a benchmark.

The real world version of overfitting!

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#48

Post by CrazyStat »

steelframe wrote: post #18

I've been following a multi-month discussion over in the r/electricvehicles subreddit about EPA range. There's a growing consensus that something is very wrong with it. Here are a couple of the articles that got some discussion in that sub: https://insideevs.com/news/407807/eletric-car-real-world-ran... https://www.caranddriver.com/reviews/a30874032/porsche-tayca... As someone who has owned both a Tesla Model X and o…

I've put 20,000 miles on my Model X in the past two years, mostly at freeway speeds, and I'm within 2-3% of the EPA-rated Wh/mile.

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#49

Post by xvector »

Joky wrote: post #32
steelframe wrote: post #18

I've been following a multi-month discussion over in the r/electricvehicles subreddit about EPA range. There's a growing consensus that something is very wrong with it. Here are a couple of the articles that got some discussion in that sub: https://insideevs.com/news/407807/eletric-car-real-world-ran... https://www.caranddriver.com/reviews/a30874032/porsche-tayca... As someone who has owned both a Tesla Model X and o…

In my experience: I manage to roughly match the EPA rating on the freeway driving at 65mph (it depends on the road, on the temperature, on how much stuff/people are in the car, etc.), but it goes down quickly as you drive faster. This table illustrates it fairly well: https://teslike.com/

I was pretty bummed to learn that my Model 3's "real" range was about 70% of the "rated" range depending on how the car was feeling. Tesla definitely creatively interprets range calculations.

Re: Model S Long Range Plus: Building the First 400-Mile Electric Vehicle

#50

Post by pengaru »

xeromal wrote: post #24
walrus01 wrote: post #23

Earlier quoted context omitted.

and how many standards-compliant hydrogen refueling stations exist right now in the 48 states, compared to places you can charge an EV?

Another bonus of having an EV is charging in your own home. You end up with a full tank every night.

Yeah, it's silly to compare. BEV charging infrastructure is trivially expanded and piggybacked on an already ubiquitous power grid.

You still need big trucks constantly hauling liquid hydrogen around for the fuel cell option...

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