M275

Mercedes AMG M275 / M279 V12 Bi-Turbo

The M275 is Mercedes’ legendary V12 biturbo — used in flagship S-Class, SL, CL, and Maybach variants.
This is your hub for parts and tuning direction for owners of V12 AMG platforms.
The Mercedes M275 engine is a V12 5.5L Mercedes variant or 6L AMG Variant simply named the M275 AMG. This car powered many variants of Mercedes and is often used in ABC suspension equipped vehicles.

Specs & History

  • Displacement: 6.0L (M275) / 6.0L updated (M279) V12 with twin turbochargers
  • Power Output: Stock figures range from ~493–621 hp depending on variant and tuning
  • Usage: Featured in AMG models such as S65, SL65, CL65, Maybach 62
  • Character: Refined V12 torque, smooth delivery, high-end luxury performance
  • Limitations: Managing heat, torque loads, and reliability in V12 architecture is complex

Performance & Upgrade Paths

  • Advanced ECU/TCU calibration for torque curves and turbo response
  • Upgraded intercoolers, charge cooling, and thermal management systems
  • Turbo / upgraded or reinforced turbos tailored to V12 layout
  • Fueling upgrades: injectors, pumps for high load scenarios
  • Exhaust / downpipes to reduce backpressure and enhance V12 sound

Browse M275-Compatible Parts

Why Upgrade the M275?

  • Flagship Power: The V12 is already a statement — performance upgrades elevate it further.
  • Heat Complexity: Managing thermal loads is essential among multiple cylinders and twin turbos.
  • Balance & Packaging: Upgrades must respect the complexity and spatial constraints of V12 architecture.

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