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Mercedes-Benz C 63 AMG (W204) Engine Replacement - M156 6.2 V8 Engines

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Mercedes-Benz C 63 AMG (W204) Engine Replacement - M156 6.2 V8 Engines

Reconditioned & Rebuilt Mercedes-Benz C 63 AMG (W204) Engines, UK-Wide

Need a reliable replacement engine for your Mercedes-Benz C 63 AMG (W204)?
Engine Finders is the UK's #1 marketplace for high-quality engines.
Reconditioned / rebuilt M156 engines from £8,000 (nearest-spec marker; ask us for a confirmed quote for your exact tune).

  • ✔ All Engine Types - Petrol, Diesel & Hybrid
  • ✔ Every Condition - Used, Reconditioned, or New
  • ✔ Unbeatable Prices - Premium engines without the premium cost
Find Your Perfect Mercedes-Benz C 63 AMG (W204) Engine Today!
Mercedes-Benz C 63 AMG (W204) engine replacement specialists | Engine Finders

Mercedes-Benz C 63 AMG (W204) Replacement Engines Options - Verified Units (UK Supply)

Every Mercedes-Benz C 63 AMG (W204) engine we supply is professionally reconditioned, bench-tested and matched to your exact engine code.

Mercedes-Benz C 63 AMG (W204) Rebuilt Engines

High-performance rebuilds with OEM parts.

Mercedes-Benz C 63 AMG (W204) Remanufactured Engines

Fully stripped and rebuilt to factory specs.

Mercedes-Benz C 63 AMG (W204) Reconditioned Engines

Thoroughly inspected and restored to working condition.

Mercedes-Benz C 63 AMG (W204) Replacement Engines

Direct swap engines for minimal downtime.

Mercedes-Benz C 63 AMG (W204) Refurbished Engines

Cleaned, tested, and performance-tuned units.

Mercedes-Benz C 63 AMG (W204) Used Engines

Affordable options with verified mileage and history.

Mercedes-Benz C 63 AMG (W204) Compatible Engine Codes & Average Prices on Rebuilt Units

All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment. VAT-inclusive. Nationwide UK delivery.

Where to buy Mercedes-Benz C 63 AMG (W204) replacement engine | Engine Finders

Why Choose Engine Finders for Your Mercedes-Benz C 63 AMG (W204) Engine?

We match Mercedes-Benz C 63 AMG (W204) owners to the correct engine code before any quote, not the badge alone.

  • ✔ We match your exact M156 tune, not just the badge, before any quote goes out.

  • ✔ Access to a UK-wide network of vetted suppliers, not one fixed price list.

  • ✔ Clear guidance on what a reconditioned M156 should include before you pay a deposit.

  • ✔ No obligation to buy: compare supplier quotes side by side first.

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Based on real post-sale feedback from buyers matched with verified UK suppliers.

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"Thanks to Engine Finders, I saved over £1,200 on my engine!" - Jimmy, London
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"Best car-related experience I've had in years. Awesome guys, honestly!." - Liam, London
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Mercedes-Benz C 63 AMG (W204) Engines for Sale | Engine Finders

The Mercedes-AMG C 63 (W204), launched in 2007, was the first C-Class AMG built around an engine designed entirely in-house by AMG: the naturally aspirated 6.2-litre M156 V8. It replaced the supercharged, part-bought M113 used in the previous C 55 AMG, and remained the standard-bearer for naturally aspirated AMG V8s through the model's 2011 facelift and 2013 run-out Edition 507.

Mercedes-Benz C 63 AMG (W204) Replacement Engines

A replacement M156 restores the C 63's defining character: a naturally aspirated, high-revving V8 with a linear power delivery unlike the turbocharged engines that replaced it. Because AMG hand-built and hand-stamped each M156, engine numbers matter more than usual for confirming exactly which tune your car has before ordering a replacement.

C 63 AMG (W204) Models & Engine Codes

All W204 C 63 AMG cars, saloon, estate (S204) and coupé (C204) alike, share the M156.985 engine code, though output varies by year and specification: standard cars from 457 PS, Performance Package cars from about 487 PS, and the 2013 Edition 507 at 507 PS. The C 63 was AMG's response to the BMW M3 (E92) and Audi RS4 of the same generation.

Buy Used and Second-Hand Mercedes-Benz C 63 AMG (W204) Engines

Used M156 units do come up for sale, generally from written-off or donor cars, but buyers should treat provenance and mileage carefully given the hand-built nature of the engine and its documented wear points on high-mileage cars. A used unit is rarely cheaper once inspection, gasket and ancillary costs are added, so weigh it against a reconditioned unit with a warranty.

Mercedes-Benz C 63 AMG (W204) Engines in Stock

We work with UK suppliers who carry reconditioned M156 units, though stock levels vary by exact specification (standard, Performance Package, or Edition 507 tune). Give us your registration and we will confirm what is available for your car.

Warranty for Replacement Mercedes-Benz C 63 AMG (W204) Engines

Warranty terms are set by the individual supplier we match you with, typically 12 months, and should always be confirmed in writing before you commit, alongside what is included (ancillaries, ECU matching, fitting).

Where to buy Mercedes-Benz C 63 AMG (W204) replacement engine | Engine Finders

Expert Tips for Choosing the Right Engine for Your Mercedes-Benz C 63 AMG (W204)

Confirm your exact M156 tune

  • Standard, Performance Package and Edition 507 cars are rated differently. Quote against the stamped engine number, not the year alone.

Ask about timing chain and cylinder head history

  • General M156 owner reports mention camshaft adjuster wear on higher-mileage cars; ask your supplier what inspection was carried out.

Check what 'reconditioned' includes

  • Ancillaries, gaskets, and ECU matching can be extra. Get this in writing.

Compare warranty terms, not just price

  • A cheaper quote with a shorter or more limited warranty may cost more over time.

⚙️ Mercedes-Benz C 63 AMG (W204) Engine Works: How Experts Rebuild Engines

When your engine fails, Mercedes-Benz C 63 AMG (W204) engine works can restore performance at a fraction of the cost of a brand-new engine. Facts for this page are drawn from Mercedes-Benz technical press material, Wikipedia and specialist automotive press (autoevolution, 500sec.com), not from a parts-catalogue lookup. Engine codes and outputs are correct to the best of these sources at time of writing; always confirm the exact code and output from the stamped engine number before ordering. From full diagnostics to rebuild, here's how experts ensure your Mercedes-Benz C 63 AMG (W204) engine works delivers optimal results, every time.

1. Diagnostics: Full compression, oil pressure and diagnostic scan to confirm engine code and failure cause before any work begins.

2. Strip-Down: Complete disassembly with every component inspected against the correct engine family tolerances.

3. Wear-Point Rebuild: Documented family-level wear points addressed as standard.

4. Reassembly: Rebuilt to OEM torque specification with new gaskets, seals and oil pump.

5. Bench Testing: Hot/cold cycle testing to confirm idle stability and correct torque delivery.

6. Warranty & Dispatch: 12-month unlimited-mileage warranty applied before UK-wide dispatch.

Get Your Mercedes-Benz C 63 AMG (W204) Engine Quote
Frequently Asked Questions - Mercedes-Benz C 63 AMG (W204) Engines
What engine does the C 63 AMG (W204) use?

The W204 C 63 AMG uses AMG's M156.985: a naturally aspirated 6.2-litre V8, hand-built in-house by AMG and unrelated to any standard Mercedes-Benz engine of the period.

How much power does the M156 in the C 63 AMG make?

Standard cars are rated at approximately 457 PS (451 hp) and 600 Nm. The AMG Performance Package, and the facelifted car from 2011, raise this to around 487 PS, and the run-out Edition 507 to 507 PS. Confirm your car's exact rating from the V5C or the engine number.

Is the C 63 AMG (W204) engine reliable?

The M156 is generally well regarded for a hand-built V8, but published owner and specialist reports point to camshaft adjuster (timing) wear and cylinder head bolt issues on higher-mileage cars. We have not verified these against a catalogue-grade source for this page, so treat this as general background rather than a documented finding specific to your car.

How much does a reconditioned M156 engine cost?

Our current reference price is £8,000 for a reconditioned M156, used here as a nearest-spec marker rather than a catalogue-matched Mercedes-Benz price, pending manual review. Get a firm quote against your exact engine number.

Does the M156 fit both the C 63 AMG saloon and coupé?

Yes, the same M156.985 engine and rating apply across the W204 saloon, estate (S204) and C204 coupé body styles.

What is the difference between the standard M156 and the Performance Package version?

The AMG Performance Package raises peak output from about 457 PS to about 487 PS through revised engine management, without changing the engine's basic specification.

Can I fit a facelifted M156 into a pre-facelift C 63 AMG?

Both pre- and post-facelift W204 C 63 AMG models use the same M156.985 code, so fitment is not the issue; the tune (and therefore the rating and price you should expect) can differ, so match the exact output as well as the code.

Was the M156 used in other Mercedes-Benz models?

Yes. The same M156 family, in different states of tune, was also fitted to the C55 AMG's successors including the CLK 63, CLS 63, E 63, ML 63, S 63 and SL 63 AMG of the same era. Ratings differ between models, so do not assume interchangeability without checking the code.

What replaced the M156 engine?

AMG replaced the naturally aspirated M156 with the turbocharged M157 (5.5-litre) in larger models and the M177/M178 (4.0-litre, twin-turbo) family from around 2015, including in the next-generation C 63 AMG (W205).

Do you supply used as well as reconditioned M156 engines?

Yes. We offer rebuilt, remanufactured, reconditioned, replacement, refurbished and used M156 units. Tell us your mileage and budget and we will match suitable UK suppliers.