“Any unauthorised modifications done to the vehicle will void its warranty” – a song sung by all car distributors in Singapore.
I can accept that certain intrusive mods may affect the lifespan and condition of certain components in a car, such as installing an aftermarket turbocharger (find out how a turbo works here)in a naturally aspirated engine, but there are simple light mods that will have a negligible effect on a car’s longevity and reliability.
But most car distributors I’ve come across take a blanket stand on this, even if the mods in question are approved by the LTA.
While I can understand that warranties are there to give owners greater peace of mind, in exchange for leaving the car as it is, the distributors shouldn’t be so inflexible.
I once checked with Kia’s local distributor about the minor mods I did to my Cerato (more about my car here), and received this reply: “Hello, Mr Tan, and thank you for your enquiry. While the terms and conditions of the warranty do state that all non-approved modifications will void it, we take each warranty claim on a case-by-case basis. We will ascertain if the modification(s) has affected the component(s), and if not, we will submit the claim.”
I think this practice is fair, and the very least that a car distributor can do in Singapore. 
