M276.824 OM276 Engine Mercedes S-Class S560 476hp

there is a common point of confusion regarding the engine in the Mercedes-Benz S560 (W222/W223). To clarify your request: the S560 with 469–476 hp actually uses the M176.980 (4.0L V8 Biturbo), not the M276 (3.0L V6).

The M276.824 is a high-output 3.0L V6 Biturbo engine, typically found in the S450 or E450 (362–367 hp). However, if you are looking for information on an M276 engine adapted for high performance or a specific S-Class variant, here are the technical details for both possibilities as of 2026:

1. The S560 Reality: M176.980 (4.0L V8)

If your car is a genuine S560 with roughly 476 hp (350 kW), it is powered by the V8 M176.

• Layout: 4.0L V8 Biturbo “Hot V”.

• Market Value (2026): A complete, low-mileage M176.980 is valued between $18,000 and $25,000.

• Key Features: Cylinder deactivation (CAMTRONIC) and NANOSLIDE cylinder coating.

2. Technical Profile: M276.824 (3.0L V6)

If you are specifically dealing with an M276.824 (the V6), here is its profile:

• Configuration: 60° V6 Biturbo.

• Standard Output: 270 kW / 367 hp.

• Application: W222 S450 4MATIC, W213 E450.

• 2026 Pricing: A used M276.824 with average mileage (80k–100k km) typically sells for $6,500 – $8,500.

3. Why the Confusion Might Exist

• The S560e (Hybrid): The S560e Plug-in Hybrid uses a version of the M276 V6 combined with an electric motor to reach a total system output of 476 hp. If you have a hybrid S-Class, you are indeed looking for an M276 engine block paired with hybrid internals.

• Model Badge vs. Engine Code: In some markets, the “560” badge is used for the hybrid V6, while in others, it is strictly the V8.

4. 2026 Common Issues (M276 V6 Platform)

If you are servicing or replacing an M276.824:

• Timing Chain Tensioners: Early versions were prone to rattle. In 2026, ensure the updated check valves and tensioners are installed.

• Turbo Coolant Lines: The plastic connectors become brittle. Aftermarket aluminum replacements are the standard “bulletproofing” fix in 2026.

• High-Pressure Fuel Pump (HPFP): These can fail, leading to long crank times or “limp mode” under heavy acceleration.

5. Installation Tip for S-Class

• 4MATIC clearance: The S-Class version of the M276/M176 has a specific oil pan design to allow the front drive shaft to pass through. An engine from a rear-wheel-drive E-Class will require an oil pan and pickup tube swap.

• Software Coding: Both engines require SCN Coding and FBS4 authorization. You cannot “plug and play” these en