Bjorn Nyland Conducts Energy Consumption Test On Tesla Model S P85D, 70D and BMW i3 – Video

FEB 18 2016 BY MARK KANE 14

Bjorn Nyland Conducts Energy Consumption Test On Tesla Model S P85D, 70D and BMW i3 - Video

Bjorn Nyland Conducts Energy Consumption Test On Tesla Model S P85D, 70D and BMW i3 – Video

Bjørn Nyland, along with two other EV enthusiasts, performed a energy consumption test for Tesla Model S P85D, 70D and BMW i3 in winter conditions at around 0°C (32°F).

It wasn’t too terribly scientific (and the test will be repeated in the future) as both Model S were loaded with stuff, while the i3 was empty. Moreover, the BMW i3 was charging and heating the battery for about one half-hour along the route, while the Teslas’ batteries cooled a little bit in the parking lot.

Average speed after over 100 km (60 miles) was around 64 km/h (40 mph), which was good for the less aerodynamic i3.

Without surprise, the BMW i3 returned the lowest energy consumption at just 161 Wh/km!  The Teslas were at around 200 Wh/km, but we believe that in a more optimal test, the Teslas could be below 180 Wh/km. But still, the BMW’s low weight makes the i3 unbeatable in tests such as this.

Test results

Test results

Bonus 1 – Tesla Model S in Norway:

Tesla Model S

Tesla Model S

Bonus 2 – Demonstrating how BMW i3’s self-parking works:

Categories: BMW, Tesla, Videos

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14 Comments on "Bjorn Nyland Conducts Energy Consumption Test On Tesla Model S P85D, 70D and BMW i3 – Video"

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Was cabin heater on? While 62 miles is a good spot check, all sorts of things can make EV efficiency go out of whack, mostly for the better when stuck in traffic if not for heater/AC.

For us weird people (ie, non metric),

P90D = 3.11 to 1.93 mi/kWh
S70D = 3.21 to 1.99 mi/kWh
i3 = 3.88 to 2.41 mi/kWh

Bjorn noted that all 3 cars had temp. set to 21º Celsius (70ºF) at about 3:30 into the show.

Almost 4 miles per kWh of juice is really good.

Looks like BMW took the Apple car threat seriously.
There’s not much else you can do to a car to get this kind of efficiency.
-Aluminum bucket and carbon-fiber body.

-Except that nose could get more efficient.
Stretch the wheelbase to 104 inches and you might be able to elongate the body and create a better shape.
But, it is a great city/suburb and country road car.

Even where EIA recognizes the highest electricity prices in US (northeast $.19), range is more important.

News flash: Big car, tuned for performance, is less efficient than a small car, tuned for efficiency. Film at 11.




Yeah, they mentioned several times regarding 400 lbs luggage. But nothing as to the heaters. I would guess a heat pump in the I3? And resistance heaters in the Teslas.

With my Roadster (microscopic cabin), the heater used about 1/2 the electricity, and would have been more on this trip since they were only going 30-40 mph. In moderate weather, my Roadster used almost NOTHING at these speeds, so the heater would have used the majority of the electricity.

People in Southern California think 32 degrees F is cold. As far as I know, there have only been 2 good ‘accidental’ cold weather tests of the Teslas, and that was several software releases ago so it time for a new test.

32F IS cold. Even water thinks it’s cold, and says “screw you, weather. I’m going to turn solid. No more jiggling around.” 😉

Yeah, heat would be sure fire way to increase consumption at that speed. Based on my experiments with SparkEV (~4 kW at 35 MPH), I think they had the heater on, but there’s no mention of it.

I really wish there would be fossil fuel solution to EV heating (like iMiev conversion); after all, heating is what FF does best, and small propane would be fine for that job.

i3s come in two versions:
BEV (battery only) has a heat pump
REX (with a small gas generator) has resistance heating.

The heat pump and the generator go in the same place in the car, so you have to pick one.

The i3 they used was a BEV.

The Model S page on Tesla’s website has a very illuminating range calculator – ambient temp, heat on/off, A/C on/off, tires, etc. I don’t know if the absolute numbers are accurate, but the comparison is what is important between different conditions. Cold weather really hurts, and cabin heat is brutal.

Tesla’s website range calculator is good but it is lacking the informations once the speed is above 70 MPH which is perhaps OK in the US but in Europe the typical highway speed happen to be 120 Km/h (75 MPH) and 130 Km/h (81,25 MPH), so you find yourself left in the dark exactly when it is the most important to know your range, when on the freeway. This is not to criticize but it is really guess work and that is not as good as telling the true values even if they are less. By the way a P90D is able to go at 250 Km/h, so knowing what the range is at half that speed should not be considered as a kind of proprietary information. Simply be open about it and why not up to 250 Km/h since that will set things clear and stop speculations and crazy low numbers from spreading around like the 50 or even 40 miles.