The Mercedes-Benz M276 is a turbocharged V6 gasoline engine introduced in 2010 as the successor to the M272. It represents a significant technological leap, designed to deliver more power, better fuel efficiency, and lower emissions while maintaining the smooth performance expected from a luxury V6 engine. The M276 features an aluminum alloy block and heads, direct fuel injection, twin turbochargers (in most versions), and DOHC with continuously variable valve timing. It is available in several variants, including single-turbo and biturbo (twin-turbo) configurations, with displacements ranging from 3.0 to 3.5 liters, the most common being the 3.0L twin-turbo V6 (M276 DE30AL). This engine is widely used across the Mercedes-Benz lineup, including the E-Class, C-Class, S-Class, GLC, GLE, and other models.

Functionally, the M276 delivers a balance of power and efficiency, thanks to its modern forced induction and advanced fuel delivery systems. The biturbo setup allows for strong low-end torque and quick throttle response, making it well-suited for both performance-oriented models and larger vehicles requiring extra power. Additionally, direct injection improves combustion efficiency and helps reduce fuel consumption and emissions. The M276 is part of Mercedes’ move toward downsizing and turbocharging in response to stricter global emissions standards. While generally more reliable than its predecessor (the M272), early M276 engines had some issues, such as timing chain stretch and oil leaks, but these were addressed in later revisions. Overall, the M276 is considered a refined, capable, and versatile engine in the modern Mercedes-Benz lineup.