Buying a pre-owned Mercedes-Benz in Delhi sounds straightforward until you realise most buyers skip the basics — incomplete service history, unverified ownership papers, and no proper inspection. The result is either an overpriced purchase or a car that starts showing problems within months. This piece breaks down what actually matters before you finalise any pre-owned C-Class, E-Class, GLC, or GLE — from checking documented maintenance records to understanding which models hold up best after years of Delhi traffic. The goal is simple: help you make a decision you won't regret six months later.