Tesla sold 7,891 units in June compared to 7,019 units in the prior year, according to New AutoMotive. Despite the rise in sales for June, Tesla's UK sales are still down nearly 2% so far this year, while Chinese rival BYD's sales have increased nearly four-fold.

Tesla Inc. saw its first increase in vehicle deliveries from its Shanghai factory this year, with the US automaker potentially buoyed by the clearance of regulatory hurdles for its advanced driver-assistance features.