Here is the full list of all 43 Little Racers STREET achievements.
Have all available cars in your garage
Win 200 races in career mode
Finish 200 races in career mode
Pay 2 million credits in repairs
Win a class A or B race without suffering serious damage
Win 100 races in career mode
Drive a total of 500 Kilometers
Beat developers best time on event A-72 - 47.397
Beat developers best time on event B-64 - 37.768
Purchase your first Class A car
Get to 1st place in the ranking
Have 20 cars in your garage
Finish 100 races in career mode
Improve your ranking to place 10
Complete 20 challenges
Purchase your first Class B car
Beat developers best time on event C-68 - 42.701
Purchase your first Class C car
Improve your ranking to place 50
Earn your first million credits
Improve your ranking to place 100
Win 10 snow events
Win 50 races in career mode
Finish 50 races in career mode
Win an online race
Beat developers best time on event D-28 - 42.652
Beat developers best time on event E-28 - 22.134
Improve your ranking to place 200
Purchase your first Class D car
Win 10 rain events
Win a race in unfair difficulty level
Tune a car to the maximum level
Win 20 races in career mode
Finish 20 races in career mode
Purchase your first Class E car
Win a race with a heavily damaged car
Finish an online race
Finish 10 online races
Win a race with an underpowered car
Win a race starting in the last place of the grid
Finish a race in last place starting in the first place of the grid
Finish your first race in career mode
Customize a car in career mode