Combustion engines are steadily increasing in technology too, due to emissions laws.<p>Batteries are the single most expensive parts of electric cars for now.<p>It was recently revealed that Tesla&#x27;s Model 3 batteries will cost Tesla around $11,400 ($190&#x2F;kwh * 60kwh) to make. This is likely much cheaper than current, as they expect the Gigafactory to bring their unit costs down.<p>I agree that this is most likely the single most expensive part of the car, and more expensive than many combustion engines.<p><a href="http:&#x2F;&#x2F;electrek.co&#x2F;2016&#x2F;04&#x2F;26&#x2F;tesla-model-3-battery-pack-cost-kwh&#x2F;" rel="nofollow">http:&#x2F;&#x2F;electrek.co&#x2F;2016&#x2F;04&#x2F;26&#x2F;tesla-model-3-battery-pack-cos...</a>