The second-generation Mercedes-Benz GLC (internal code name X254 for the SUV and C254 for the Coupé, often mistakenly referred to as W254) is based on the MRA2 platform, shared with the C-Class W206. Launched in late 2022 (2023 model year), it marks a major technological breakthrough: 100% of its powertrains are electrified, ranging from 48V mild hybrid (MHEV) to plug-in hybrid (PHEV) equipped with a huge 31.2 kWh battery offering over 100 km of electric range. Positioned as the brand's global best-seller, it offers an ultra-modern cabin dominated by the MBUX 2.0 system. Although this report focuses on gasoline engines (M254 family), the overall electronic complexity and the significant weight of the PHEV versions (over 2.3 tonnes) are the main reliability challenges for this still very re
⚖️ Expert's Verdict The Mercedes GLC X254 is a technological tour de force, particularly impressive in its plug-in hybrid (PHEV) versions which redefine the segment's electric range standards. The gasoline powertrains (M254), whether MHEV or PHEV, are mechanically mature and benefit from a much better integrated 2nd generation mild hybridization. However, this technological extravagance comes at a price: a ponderous weight for PHEVs that compromises agility and accelerates wear of consumables, as well as inevitable early electronic bugs on such a complex network architecture. Buying Advice: If you don't have the possibility to recharge daily, the GLC 300 4MATIC (Gasoline MHEV) is the most balanced choice, offering power, smoothness, and contained weight. If you are a daily electric driving enthusiast, the GLC 300 e is fantastic, but demand a model for which all recalls and software updates have been performed. In any case, an extended warranty is highly recommended given the cost of electronic components.