Case Study: Why Repair is Better Than Replace (Proton Saga & Hyundai Matrix) In today's economy, buying a new car is a heavy financial commitment. Many car owners in Johor Bahru are choosing a smarter path: Restoring their trusty older vehicles. At Advance Auto Work , we specialize in breathing new life into aging cars. In this case study, we showcase two "legends" of the road—a Proton Saga and a Hyundai Matrix —both suffering from gearbox failure. The Problem: Slipping & Jerking Both cars had similar symptoms: hesitation when accelerating (slipping) and rough gear changes (jerking). Many general workshops might suggest swapping in a used "half-cut" gearbox, but that is a gamble. The Solution: Professional Overhaul We performed a Full Gearbox Overhaul on both vehicles. This involves: Dismantling: Stripping the gearbox to its core. Replacement: Installing new friction plates, seals, and ...