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Did Polestar Range Confuse Kilometers & Miles?

In our article about the Polestar 1 at Geneva, we referenced the odd all-electric range of 150 km (NEDC).

In our article about the Polestar 1 at Geneva, we referenced the odd all-electric range of 150 km (NEDC).Polestar 1 at Geneva Motor Show

“Polestar is a PHEV and claims an all-electric range of 150km NEDC. This would be the first time the NEDC numbers are lower than the EPA numbers. Or the engineers have boldly succeeded were no others have gone before. Make a sleek, lightweight sport car with a 34kWh battery and a range of less than 100 miles.”

Now back from the show, these numbers are not just odd, they look impossible. This is 93.2 mi (NEDC), and normally the NEDC value is between 115% and 160% of the EPA value.

To compare this with other modern cars.

Model Efficiency Battery Range EPA Range 34 kWh EPA Range 34 kWh NEDC
Hyundai Ioniq EV 25 kWh/100 mi 28kWh 124 miles 150 miles 336 km
Chevrolet Bolt EV 28 kWh/100 mi 60kWh 238 miles 135 miles 302 km
Tesla Model S 75D 33 kWh/100 mi 75kWh 259 miles 117 miles 262 km

For the conversion from “Range 34kWh EPA” to “Range km NEDC 34kWh,” the formula is:
EPA range times 1.6 (miles to km) times 1.4 (EPA to NEDC).
Polestar range spec at Geneva Motor Show
But it is strange to mention NEDC for a new car in Europe. NEDC is discontinued and succeeded by WLTP. The EPA to WLTP is a lot closer. We don’t have a lot of experience, but it looks like 105% to 110%.

A believable range for the Polestar is 150 miles WLTP, which would be the same efficiency as the Chevrolet Bolt.

If there was a slight communication and translation issue between the technical people in Sweden and China and the marketing department responsible for the display in Geneva, that could explain a 150 mi WLTP getting displayed as 150 km NEDC.

We have asked Polestar to comment on these numbers. If we hear back from them, we will update this article.

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Written By

Grumpy old man. The best thing I did with my life was raising two kids. Only finished primary education, but when you don’t go to school, you have lots of time to read. I switched from accounting to software development and ended my career as system integrator and architect. My 2007 boss got two electric Lotus Elise cars to show policymakers the future direction of energy and transportation. And I have been looking to replace my diesel cars with electric vehicles ever since. At the end of 2019 I succeeded, I replaced my Twingo diesel for a Zoe fully electric. And putting my money where my mouth is, I have bought Tesla shares. Intend to keep them until I can trade them for a Tesla car. I added some Fastned, because driving without charging is no fun.


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