20 months to 5 years. From when you pass your G1 test, you’ll need to wait 12 months until you can take your G2 test (8 months if you take an approved driving course). Then you’ll need to wait an additional 12 months from when you pass your G2 test until you can take your G test. If you don’t get your G license in 5 years after passing the G1 test, you’ll have to start all over.