201–210 of 358 posts
Right now I’m leaning towards Rivian, but they are currently unproven and would like to ideally wait out a few generations.
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.
In my experience: - teslas have a big battery, range anxiety is not a problem - it is possible and even easy to drive inefficiently Other electric cars have small batteries, and small motors which combine to reward frugal driving.
About the size of the motors, the Tesla one are actually not that big. Which is a good thing.
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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.
It's one thing to have the engine+drivetrain efficiency peak at 70. But for total efficiency to be worse at 60, despite massively reduced wind resistance, is pretty suspicious.
This is impressive. Almost 650 Km. Conservatively, let's say 600 Km, it's very very impressive. My daily commute is 30 KM, I can go 20 days without charging. Back of the napkin suggests that if I charge overnight in my garage, I can go without super charger charging for more than a month and a half. This is no small feat.
If you charge overnight on your garage, you never need to visit a supercharger unless you take road trips. Last time I visited a supercharger was 4 months ago.
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Just to be clear: EPA tests the cars and calculates the range, not Tesla (or any other car maker). Therefore Tesla cannot "overestimate" EPA range. If you think that EPA range is not accurate, then you can blame EPA. And since you bring science, who are "they" and in what way their tests are more scientific that EPA's tests?
"Manufacturers test their own vehicles—usually pre-production prototypes—and report the results to EPA. EPA reviews the results and confirms about 15%–20% of them through their own tests at the National Vehicles and Fuel Emissions Laboratory.[6]" https://en.wikipedia.org/wiki/Electric_car_EPA_fuel_economy
Actually in the recent Model S test prior to this one, Tesla discovered through examination of the data logs of the car that the EPA had carelessly left the key in the car all night while it was parked during testing that spanned multiple days, leading to an artificially low number as the car was unable to sleep at the level it normally should be able to when parked.
This whole episode happened because the EPA was doing the testing… I don't know where that leaves your anecdote. It's just false, I think. I love Wikipedia and even have a monthly donation to them, but your link is not reflecting what happened with Tesla here.
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…
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I make an app (called Nikola, not the truck company) for Tesla owners that has seen over 5 MM miles driven on it. I did some quick queries to validate actual range vs. EPA range for those curious. My general takeaway is to see the EPA range as a useful, albeit unrealistic, indicator. Essentially nobody gets the EPA range, either because they choose not to go the speed limit, they accelerate harder than the EPA test f…
What's most striking to me as someone who has heard over and over again about how air resistance is a X^2 property, is the extent to which short (and presumably slow) trips punch above their weight in terms of range consumed per mile. From what I can tell, the actual cost here is the fixed cost of booting up some systems and electronics, and the variable costs of running them over fewer miles can make the MPGe drop.…
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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 ped…
Most evidence shows that for Tesla, they end up overestimating the EPA range, not being conservative.
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In my experience: - teslas have a big battery, range anxiety is not a problem - it is possible and even easy to drive inefficiently Other electric cars have small batteries, and small motors which combine to reward frugal driving.
Tesla has big batteries but many other cars have large batteries too. Like the Jaguar ipace, the Audi étron, the Mercedes EQC, or the hyundai kona... About the size of the motors, the Tesla one are actually not that big. Which is a good thing.
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Around town, for sure, but on a road trip with the fam I just set turn on autopilot at 70 and leave it. My wife & kids are not nearly as appreciative of the performance as I am :). But, even at mild temperatures cruising at steady speed on mostly level terrain, I generally see 325 Wh/mi. If I cruise at 75, it's 350 Wh/mi. The rated range can only be achieved by hitting about 250 Wh/mi.
Assuming you have the 20 inch performance wheels (and the Pilot 4S summer tires that come with them), those could be the difference between you getting 325Wh/mi and something more in line with 250-275 at 70mph. Here's a chart with speed/efficiency measurements for most Tesla model/wheel configurations: https://teslike.com/