Mercedes-AMG GLC53 Launches in Australia With Inline-six Engine

The Mercedes-AMG GLC53 launched in Australia, changing the German carmaker's direction after intense backlash over electrified four-cylinder performance models, Lithgow Mercury reported.

The Tech TL;DR:

• The Mercedes-AMG GLC53 replaces the axed four-cylinder GLC43 and GLC63 models.
• It features a 3.0-litre turbocharged inline-six engine with 48V mild-hybrid assistance producing 330kW.
• The vehicle arrives following design criticisms of recent Mercedes-Benz models and the appointment of a new design chief earlier in 2026.

The newly launched GLC53 was never meant to exist initially, born instead from severe customer criticism directed at the electrified four-cylinder GLC43 and GLC63, according to Lithgow Mercury and Mudgee Guardian. While those four-cylinder variants were fast, critics noted they lacked soul, prompting the carmaker to pivot.

Under the bonnet, the GLC53 packs a 3.0-litre turbocharged inline-six engine paired with 48V mild-hybrid assistance. The setup generates 330kW, a slight bump over the defunct 310kW GLC43, though the engine fundamentally transforms the driving experience with a crisp, precise, and burbly sound profile featuring genuine exhaust pops and crackles in sportier drive modes.

Mercedes-Benz previously moved early toward downsizing performance engines for emissions compliance, while rival manufacturers maintained inline-sixes and V8s. The return of the inline-six suggests the company may change its engine strategy, mirroring the recently revealed CLE646 Spezialanfertigung, a limited-run ultra-high-performance CLE featuring a 4.0-litre twin-turbo flat-plane crank V8 producing 475kW and 850Nm.

Despite mechanical updates, design critics point out that recent models like the AMG GT 4-Door EV, GLC Electric, and VLE remain polarizing. The current-generation GLC arrived back in 2023, retaining a high-end, sophisticated stance in AMG guise. Leadership changes occurred earlier in 2026 when Bastian Baudy succeeded Gorden Wagener as head of design after an 18-year tenure.

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