The Nio main brand delivered 19,269 vehicles in April, with Onvo at 4,400 and Firefly at 231 units.

Nio Inc saw a significant rebound in deliveries last month, as the Nio main brand saw its performance improved.

The electric vehicle (EV) maker delivered 23,900 vehicles in April, its second highest ever, behind last December's 31,138, according to data it released today.

This is up 53 percent from 15,620 units in the same month last year and up 58.92 percent from 15,039 in March.

The Nio main brand delivered 19,269 vehicles in April, up 23.36 percent year-on-year and up 88.56 percent from March.

Onvo delivered 4,400 vehicles in April, down 8.71 percent from 4,820 in March.

Firefly delivered 231 vehicles in April. The Nio sub-brand began its first deliveries on April 29.