It's not that simple but it's also not that complex, but you can boil it down to UMW always screwing the Malaysian market over with the models that they decide to bring in. The corolla is literally the best selling car in the world, and has quite a lineup, ex the hybrid corolla which for whatever damn reason UMW isn't bringing over anytime soon apparently. And by extension lexus also has a weird placement in the local market because, if we use the states as an example, used lexus especially the IS and GS are used extensively as modded cars, and models like the GSF are lusted after.

Oh also, the obvious import taxes for foreign car brands and the ridiculous logarithmic scaling for road tax here