Students who took the driver's license test signed up for manual transmission and passed subject one, but wanted to change to automatic transmission halfway. How to change the manual gear once the course is over? Under normal circumstances, you can change the automatic transmission after passing the exam, because the automatic transmission is C2 driver's license, and C 1 is downgraded to C2 driver's license. After passing the exam, you don't have to take the exam if you change to C2 driver's license. However, students are advised to give full consideration before changing, because the quasi-driving models of C 1 driver's license include small cars with manual transmission and automatic transmission, while C2 driver's license cannot drive small cars with manual transmission. When changing manual gear to automatic gear, students need to go to the local traffic control office, fill in the letter of confirmation of demotion and sign it for confirmation. Students also need to negotiate changes with the driving school, go through relevant procedures and pay relevant fees. The difference between C 1 and C2 is that the driver's license of C 1 allows driving with manual transmission and automatic transmission, while the driver's license of C2 can only drive with automatic transmission. Generally speaking, after the driver's license is downgraded, the range of vehicles available for driving is reduced.