The force exerted on the carseat will be significantly lessened by the five-point harness. The harness will absorb the force of a brake at a greater rate than the three-point harness as it has more points to take in the force. You Might Also Like Can I use my car seat if it has been damaged? 2020-12-29 How can I check if the harness is installed correctly? 2020-12-29 Opens in a new window Twitter Opens in a new window Facebook