The electric-car company had originally sought to sell only $1.6B worth of debt, but increased the amount due to strong demand. An over-allotment provision could take the deal to $2.3B.
The sale comes amid a 70% surge in Tesla's share price since the start of the year.
Tesla sold $800M in five-year debt with a coupon payment of 25 basis points and $1.2B in seven-year notes at 125 basis points. Both bonds have an equity conversion premium of 42.5%.