Dackevall: Om gummirullarnas ökande betydelse

Gunnar Dackevall

Gunnar Dackevall

15 jun 2020

Vi kör en vända med Audis båda kaross-varianter av e-Tron (läs mer om det här), och tankar snurrar inte ologiskt kring luftmotståndets inverkan på räckvidden i en elbil. Vid all landsvägskörning över 70 km/h är just bilens aerodynamiska kvalitet det absolut avgörande för hur mycket energi som krävs för att driva den genom vinden, och […]

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

Relaterat innehåll

Läs mer

Mest lästa

3 sep 2026

500 000 bilar testade – så mår batterierna efter 15 000 mil
1 sep 2026

Priset klart – det kostar Ioniq 3
1 sep 2026

Renault Scenic får LFP-batteri och längre räckvidd
2 sep 2026

Kombikaross och bakruta – det kostar Polestar 4 SUV
4 sep 2026

Vi kollar in Xiaomis elbil – kan SU7 utmana Porsche?