Police were alerted to a 16-year-old driving in Jedburgh, with his co-accused in the passenger seat and three youngsters in the back of the car.
Jordan Magahy, now aged 17, of Priors Meadow, Jedburgh, admitted driving a car without a licence and insurance at Oxnam Road, Jedburgh, on January 5.
Sentence was deferred until April 12 for a personal appearance.
Co-accused Mike Gibson, 22, of Wilson Drive, Hawick, pleaded guilty to allowing the teenager to use the vehicle without a licence and insurance. He was fined £270 and his licence endorsed with six penalty points.
Defending, Rory Bannerman said Gibson “felt pressurised to allow his friend to drive”, adding: “Their detection by police has brought an end to the friendship.”