[davioh2001]

I've had this car for about 1 month and 1500 miles;
The lowest I got was this week @ 20 degree freezing temps with ice and with a lot of "idling" and HVAC used waiting on Amazon package to arrive at my local Amazon store. The Result; only 2.3 miles per kWh.
800 mile trip to and back from Dallas, TX averaged around 4.0 miles per kWh highway speeds 55-75 mph no HVAC to help range out. I did find out near the end after it dips to below 10 miles they no longer even give You a milage remaining just a frantic low battery light blinking and that was unnerving!
A few weeks ago at a temperate 70 degree temps with no HVAC and careful city driving @40 mph. The result an incredible 7.2 miles per kWh over around 30 miles or so. Are such wild variances in efficiency to be expected?

 

[GJETSON]

Are such wild variances in efficiency to be expected?

Yes. The laws of physics apply to all cars. You just don't get to see them documented in such fine detail in most ICE cars.

 

[Sean Nelson]

Are such wild variances in efficiency to be expected?

Yep.

 

[gern_blanston]

...Are such wild variances in efficiency to be expected?

Yep.

Yes. The laws of physics apply to all cars

 

[XJ12]

I find that I take more back roads instead of the highway. ICE vehicles did better highway than in town. EV's are the opposite.

 

[pe1979]

Yes. The laws of physics apply to all cars. You just don't get to see them documented in such fine detail in most ICE cars.

While ICE vehicles do see fluctuations due to weather conditions I can't say that I've ever experienced such wild fluctuations as those that appear to exist with EVs.

 

[surgeonFWW]

I find that I take more back roads instead of the highway. ICE vehicles did better highway than in town. EV's are the opposite.

I have found that by taking the Interstate (where the legal minimum speed is 40 mph), setting the cruise control at 60 (sometimes even 55) mph, and staying in the right lane, I can get upwards of 260-275 miles on a charge (summer). Staying at a constant speed ALWAYS beats accelerating and braking, USUALLY beats accelerating and coasting, and OFTEN beats accelerating and regenerating. The advantage is getting there a "little bit" earlier and a little bit less frazzled. I keep my hands on the wheel and pay attention to the road, but I find it more relaxing. AND, I don't mind construction slowdowns at all!

 

[ibboltin]

I find that I take more back roads instead of the highway. ICE vehicles did better highway than in town. EV's are the opposite.

Yeah today was a winfal mileage day here in Toronto. It was 6c today so no heater required. The it was slightly rainy and coming out of downtown Toronto and 4pm was as typical brutally slow stop and go. I had my business partner in the car too so I even got a bunch of mad rips in during our trip to show off the car Lots of slow 30-50kms driving with stop and go. Used a little bit of heat a times. But generally the left green bar was slammed to the top on the DIC and the predicted max range was climbing steadily higher and higer wihile the calculated mileage did not drop at times giving me "free" miles! At the end of a 95km trip I used 15.4kw of battery! That a little over 6kms per kw! Best yet on snow tires! Feels like winning the lotto.

 

[Torontonian69]

Yeah today was a winfal mileage day here in Toronto. It was 6c today so no heater required. The it was slightly rainy and coming out of downtown Toronto and 4pm was as typical brutally slow stop and go. I had my business partner in the car too so I even got a bunch of mad rips in during our trip to show off the car Lots of slow 30-50kms driving with stop and go. Used a little bit of heat a times. But generally the left green bar was slammed to the top on the DIC and the predicted max range was climbing steadily higher and higer wihile the calculated mileage did not drop at times giving me "free" miles! At the end of a 95km trip I used 15.4kw of battery! That a little over 6kms per kw! Best yet on snow tires! Feels like winning the lotto.

It does! Same thing happened to me. I travel the 401/400 or 401/410 combination everyday and I always get bumper to bumper on the 401 and “free kms”. When I hop on the highway 9 or 10 that’s when the kms go down but a steady speed will take me home with usually with 50 to 100km to spare (-21 and 10c respectively).
As for the back roads, I find myself doing that too. I’m always like “not spending gas anyway...” lol

 

[mboni]

While ICE vehicles do see fluctuations due to weather conditions I can't say that I've ever experienced such wild fluctuations as those that appear to exist with EVs.

ICE vehicles are always blowing 60-70% of their energy out the tailpipe and radiator as heat. Driving efficiency only impacts the remaining 30-40% of the energy that is actually used to propel the car. Since the waste heat doesn't change much, it's harder to see changes in driving efficiency, but they are still present.

 

[GJETSON]

While ICE vehicles do see fluctuations due to weather conditions I can't say that I've ever experienced such wild fluctuations as those that appear to exist with EVs.

With an EV it is relatively easy to count coulombs, or number of electrons passing through a wire per second. Unfortunately, as far as I know, there is no comparably simple method of counting moles per second of gasoline passing through a tube. You are seeing gross figures...averages over much larger quantities and times, for an ICE.

 

[keeperchris]

I've had this car for about 1 month and 1500 miles;
800 mile trip to and back from Dallas, TX averaged around 4.0 miles per kWh highway speeds 55-75 mph no HVAC to help range out. I did find out near the end after it dips to below 10 miles they no longer even give You a milage remaining just a frantic low battery light blinking and that was unnerving!

Welcome and thanks for the information. Yes, efficiency can vary quite a bit. I think you've likely hit the spectrum.
More detail please on Dallas road trip. As a fellow (?) Texan, the wide open spaces between metro areas seems a bit daunting. Although in a few weeks, will take a 400 mi trip to conference (Houston to west of Austin), where hotel has destination charge. If I get a bit nervous, there are DCFC charger in Austin, so should be fine.

 

[GregBrew]

When you say "back roads", I visualize an expansive wheat field with a gravel track that converges to a vanishing point in the distant foothills.

I'm guessing that's not it...

 

[XJ12]

When you say "back roads", I visualize an expansive wheat field with a gravel track that converges to a vanishing point in the distant foothills.

I'm guessing that's not it...

see more cotton, chili, and onion fields. no wheat.

 

[beeguz]

I have a very short ride to get to where I need to be in the morning, I take the expressway, just to get there near the time I should be there.

On the way back I drive across town,the problem is, I have to deal with a very steep hill to get home if I go that way.

I may have to alter my route to make it less expensive to drive.

 

[GlenandhisBolt1!]

I drive about one third freeway at 60 to 75 mph, about one third expressways at 45 mph and the rest is in-town at 40 mph or less. The MyChevrolet app tells me my Bolt has an average of 2.8 miles per kWh over it's lifetime of 1,383 miles in about 2-1/2 months. I don't baby the car, and tend to hit the accelerator hard at times. I use the heat and air conditioning regularly. It has been 'cold' lately by San Francisco Bay Area standards: lows in the high 30s Fahrenheit. I charge in the wee hours of the night (11AM to 7AM) once or twice a week, so PG&E charges me only about 12 cents USD per kWh. This means my energy costs are less than half what an equivalent ICE car costs.

 

[XJ12]

I drive about one third freeway at 60 to 75 mph, about one third expressways at 45 mph and the rest is in-town at 40 mph or less. The MyChevrolet app tells me my Bolt has an average of 2.8 miles per kWh over it's lifetime of 1,383 miles in about 2-1/2 months. I don't baby the car, and tend to hit the accelerator hard at times. I use the heat and air conditioning regularly. It has been 'cold' lately by San Francisco Bay Area standards: lows in the high 30s Fahrenheit. I charge in the wee hours of the night (11AM to 7AM) once or twice a week, so PG&E charges me only about 12 cents USD per kWh. This means my energy costs are less than half what an equivalent ICE car costs.

So far I've got 3100 miles in 4 months and have a lifetime average of 4.1 miles per kWh (per the car). We're warm enough at times in the winter that we still need to run the air conditioner now and again. Lately, with cooler outside temps, I've been using the fan with recirc off to cool the car instead of the air conditioner. The car still can get hot on the inside by the sun even with it being 50 degrees outside.

 

[Vertiformed]

The MyChevrolet app tells me my Bolt has an average of 2.8 miles per kWh over it's lifetime of 1,383 miles in about 2-1/2 months.

The app is buggy and lies. Look at the trip meter on the dash in the car. If you haven't reset it, it'll show accurate information since you got the car.

My trip info on the dash tells me that I've got an average of 4.2 miles/kWh so far, but the app claims the lifetime efficiency is only 3.2 miles/kWh.

 

[Cehjun]

The app is buggy and lies. Look at the trip meter on the dash in the car. If you haven't reset it, it'll show accurate information since you got the car.

My trip info on the dash tells me that I've got an average of 4.2 miles/kWh so far, but the app claims the lifetime efficiency is only 3.2 miles/kWh.

My app data matches the vehicle readouts.

Has the data in the app been updated? To do that with an iphone (probably with android too) on the general screen, put your index finger on center of screen push, hold and drag your finger down the screen for a few seconds. And you should then see a spinner 'updating'.

 

[jurg]

http://www.opel.de/fahrzeuge/ampera-e/uebersicht/partials/reichweite/reichweitensimulator.html