Besides other reasons, car manufacturers often develop new cars with the aim to improve on their ASEAN NCAP crash safety performance rating. Apart from car safety assist, such ratings depend on the degree of adult occupant protection (AOP) and child occupant protection (COP) measured via the seriousness of injuries to dummies. This study shall explain how car manufacturers can improve their crash performance rating without changing the platform structure of a new car. The move shall be more cost effective as platform structure development is expensive;​ and less time consuming to enable a product to be launched in time (Al-zaher & Elmaraghy, 2014;​ Al-zaher & Elmaraghy, 2014). Two ASEAN NCAP crash tests have been conducted on 2 car brands on two different occasions, with the more recent result showing improvement from 3-Star to 4-Star rating. This proves that without a platform structure change, a high rating can still be achieved. Such a situation will help manufacturers save cost and reduce time to develop a new car by using the same platform structure but with better safety performance.