The 36-year-old reality TV star, who shares four kids with ex-partner Kourtney Kardashian, presented his girlfriend of two years with the motor, decorated with a large bow.
"Holy S**t!" she wrote on her Instagram story account on Saturday, August 24 under a photo of the cool gift, adding, "Wow wow wow Best bf award."
In another shot, she showed a view from the steering wheel.
Disick also organised a birthday breakfast spread for Lionel Richie's daughter, before she took off for a party on a plane, surrounded by girlfriends, including Kylie Jenner, en route to the Wynn in Las Vegas.
Sofia turned 21 on Saturday.