Here is the full list of all 19 SEX & DRIFT achievements.
Complete first race
Score 250,000 at drift races
Complete a race with nitro on
Drop into Gallery
Win 3 race in a row
Beat Mayling
Beat Anna
Beat Sofia
Beat Judy
Beat Jully
Beat all bosses
Earn $250000
Buy the first car
Buy all cars
Tune your car
Fully upgrade your car
Paint your car
Drive faster than 250 kmph
Take part in a night race