With Chief Executive Elon Musk playing a prominent role in the Trump administration, many Tesla drivers are no longer happy about supporting the car brand.

After tons of research we bought a Tesla Model Y. We didn't realize how expensive it'd be to insure it. Now we want to sell it.

This suggests that the reaction of consumers to Mr Musk’s antics are only one reason for falling sales. An updated Model Y, Tesla’s best-selling vehicle, has just gone on sale. In preparation Tesla ran down inventory of the old model, crimping supply. Customers have doubtless held off purchases until the new car is available.