2009-2012 Mercedes-Benz C-Class W204 M271.820 Engine and Gearbox 1.8L Petrol – 60K Miles

Product Details

The Mercedes W204 M271.820 Engine and Gearbox package is a replacement petrol powertrain assembly for compatible 2009–2012 Mercedes-Benz C-Class vehicles equipped with the 1.8-liter M271.820 engine. With approximately 60,000 miles stated mileage, this engine and transmission package is suitable for vehicle repair, engine replacement, collision rebuilding, mechanical restoration, automotive workshops, Mercedes-Benz specialists, parts resellers, exporters, and wholesale automotive buyers.

The Mercedes-Benz M271.820 is a 1,796 cc four-cylinder turbocharged petrol engine with direct fuel injection. Mercedes-Benz’s historical technical archive identifies the M271.820 in the C180 CGI BlueEFFICIENCY and specifies a turbocharger, intercooler, direct injection, DOHC cylinder head, 16 valves, and chain-driven camshafts.

Depending on vehicle version and engine calibration, the M271.820 appears in compatible C-Class applications including the C180 CGI and certain C200 CGI configurations. Parts-industry application data lists the M271.820 at approximately 115 kW / 156 hp in the C180 CGI and 135 kW / 184 hp in selected C200 CGI applications.

The Mercedes W204 M271.820 Engine and Gearbox should always be matched using the VIN, engine number, gearbox code, vehicle model designation, and donor-vehicle information before purchase.

M271.820 1.8L Petrol Engine Specifications

Documented specifications for the M271.820 include:

• Engine code: M271.820
• Fuel: Petrol / gasoline
• Displacement: 1,796 cc / 1.8L
• Configuration: Inline four-cylinder
• Valves: 16
• Camshaft configuration: DOHC
• Fuel system: Direct gasoline injection
• Induction: Turbocharged
• Intercooler: Yes
• Bore: 82.0 mm
• Stroke: 85.0 mm
• Compression ratio: 9.3:1
• Camshaft drive: Timing chain
• Cooling: Water cooled
• Installation: Longitudinal

Mercedes-Benz documents the C180 CGI M271.820 at 115 kW / 156 hp and 250 Nm, while application catalogs also identify M271.820 versions used at higher output in compatible C200 CGI vehicles.

Because ECU calibration and vehicle application affect output, the Mercedes W204 M271.820 Engine and Gearbox should not automatically be advertised with a single horsepower rating unless the donor model is confirmed.

Compatible Mercedes-Benz C-Class Applications

The M271.820 is documented in compatible W204-generation C-Class models including:

Mercedes-Benz C180 CGI

The C180 CGI W204 uses the M271.820 in compatible applications with approximately:

• 1.8L displacement
• 156 hp / 115 kW
• 250 Nm torque
• Turbocharging
• Direct injection

Mercedes-Benz’s own archive confirms this engine configuration.

Mercedes-Benz C200 CGI

The M271.820 also appears in selected C200 CGI W204 applications, with industry application data showing approximately 184 hp / 135 kW depending on version.

For either application, buyers should confirm the exact engine number rather than relying only on C180 or C200 badges.

W204, S204 and C204 Applications

The M271.820 engine family was used across several C-Class 204-series body configurations.

Depending on model and production specification, compatibility can extend to:

• W204 – C-Class Sedan / Saloon
• S204 – C-Class Estate / Wagon
• C204 – C-Class Coupé

Application catalogs identify the M271.820 across these 204-series vehicles, including C180 CGI and C200 CGI configurations.

However, gearbox, wiring, exhaust connections, ECU programming, engine accessories, and mounting hardware can differ.

The Mercedes W204 M271.820 Engine and Gearbox must therefore be verified against the exact recipient vehicle.

Approximately 60,000 Miles

This product is offered with a stated mileage of approximately:

60,000 miles

For a used engine and gearbox, mileage is valuable purchasing information, but buyers should also verify any available donor-vehicle documentation.

Where available, useful supporting information can include:

• Donor VIN
• Dashboard mileage photograph
• Vehicle dismantling records
• Engine number
• Gearbox identification label
• Service documentation

Mileage describes prior vehicle use and should not be interpreted as a guarantee of future service life.

Gearbox Compatibility

A major point requiring verification is the transmission.

The M271.820 was paired with more than one transmission type depending on production year, market, and vehicle configuration.

Technical fluid/application data identifies compatible W204 M271.820 vehicles with:

• 716.6-series 6-speed manual transmission
• 722.6-series automatic transmission
• 722.9-series automatic transmission

A documented 2010 W204 C180 CGI with M271.820, for example, uses an automatic transmission identified as 722.696 / A2042708300.

Another documented M271.820 application uses a later 722.997 automatic transmission.

Therefore, the exact gearbox supplied with this Mercedes W204 M271.820 Engine and Gearbox should be identified from its transmission label before the product is shipped.

Do Not Assume Every M271.820 Gearbox Is Interchangeable

Even where two vehicles use an M271.820 engine, their transmissions may not be directly interchangeable.

Potential differences include:

• 5-speed vs 7-speed automatic
• Transmission generation
• Gear ratios
• Electronic control
• Conductor plate/mechatronics
• Torque converter
• Software calibration
• Production number
• Vehicle equipment codes

The 722.9 transmission family itself includes different production generations and configurations.

For this reason, buyers should provide the existing gearbox code when requesting the complete engine-and-gearbox package.

Engine and Gearbox Package Contents

The term engine and gearbox should only describe the components actually supplied.

A package may potentially include:

• Complete engine
• Automatic or manual gearbox
• Turbocharger
• Intake components
• Fuel injection components
• High-pressure fuel pump
• Alternator
• Starter motor
• Air-conditioning compressor
• Engine wiring
• Engine mounts
• Torque converter on automatic versions

However, these accessories should not automatically be assumed included.

The exact Mercedes W204 M271.820 Engine and Gearbox package should be photographed and itemized before quotation.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

ECU and Electronics

A used replacement engine may require original vehicle electronics to be retained or adapted.

Depending on the package, components such as the following may not be included:

• Engine ECU
• Transmission control electronics
• Immobilizer components
• Ignition key
• Electronic steering lock
• Wiring harness  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

Installing an engine with the correct mechanical code does not automatically mean all electronic modules are plug-and-play.

Mercedes-Benz-compatible diagnostic equipment may be required after installation.

M271 Timing Chain Inspection 60K Mercedes W204 M271.820 Engine & Gearbox | Premium

The M271.820 uses a chain-driven camshaft system. Mercedes-Benz’s technical specification identifies a single roller chain for camshaft drive.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

When installing a used engine, technicians may choose to inspect the timing-system condition along with other service components before final installation.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

Inspection can include:

• Chain condition
• Guides
• Tensioner
• Camshaft timing components
• Oil leakage
• Coolant leakage
• Accessory belt  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

No specific condition of these components should be assumed from mileage alone.

Turbocharger and Direct Injection System

The M271.820 combines turbocharging with direct gasoline injection.

Mercedes-Benz documentation specifies both a turbocharger/intercooler arrangement and cylinder-direct injection with a high-pressure fuel pump.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

When purchasing the Mercedes W204 M271.820 Engine and Gearbox, buyers should confirm whether the supplied engine retains its:

• Turbocharger
• High-pressure fuel pump
• Fuel rail
• Injectors
• Intake manifold
• Throttle body  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

Package contents can significantly affect installation cost.

Used Engine Condition

A used engine should be inspected before installation.

Recommended checks include:

• Oil condition
• Coolant passages
• Visible leaks
• Turbo condition
• Wiring connectors
• Engine mounts
• Intake system
• Exhaust mounting points
• Compression where available
• Diagnostic fault information where available  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

The stated 60,000-mile mileage should be considered alongside the engine’s physical and mechanical condition.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

Used Gearbox Inspection

The gearbox should also be inspected separately.

Check:  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

• Transmission casing
• Connectors
• Oil leaks
• Mounting points
• Torque converter where applicable
• Output flange
• Electrical plugs
• Identification label
• Gearbox code  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

Transmission oil and service items may also be replaced during installation according to the correct gearbox specification.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

Professional Installation Recommended

Professional installation of the Mercedes W204 M271.820 Engine and Gearbox is strongly recommended.

An engine-and-transmission replacement can involve:

• Engine removal
• Transmission removal
• Cooling-system disconnection
• Fuel-system work
• Exhaust removal
• Electrical disconnection
• Driveline components
• ECU diagnostics
• Fluid replacement  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

After installation, all relevant systems should be checked for leaks, fault codes, correct fluid levels, cooling-system operation, and transmission performance.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

Suitable for B2B Automotive Buyers

This powertrain package is suitable for:

Mercedes-Benz Specialists

For W204 engine and transmission replacements.

Engine Repair Workshops

For customers requiring a complete replacement rather than rebuilding a damaged engine.

Vehicle Rebuilders

For accident-damaged and salvage C-Class vehicles.

Used Parts Dealers

For stocking M271.820 engines and compatible gearboxes.

Automotive Exporters

For international used-engine and drivetrain supply.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

Wholesale Buyers

Multiple engines and powertrain assemblies can be requested subject to availability.

Information Required Before Ordering

For accurate compatibility checking, provide:

• Vehicle VIN
• Model year
• C180 CGI or C200 CGI
• W204/S204/C204 body style
• Engine code
• Existing engine number
• Gearbox type
• Gearbox code
• Manual or automatic transmission
• Required quantity
• Delivery destination  60K Mercedes W204 M271.820 Engine & Gearbox | Premium

The gearbox code is especially important because multiple transmissions can be paired with the M271.820.

Request a Quote

For pricing and availability of the Mercedes W204 M271.820 Engine and Gearbox, provide the VIN, exact model, year, existing M271.820 engine identification, transmission code, and delivery destination.

This unit is offered with approximately 60,000 miles stated mileage. Exact engine accessories, transmission code, torque converter, wiring, ECU, turbocharger, condition, test information, packaging, MOQ, and shipping terms should be confirmed from the actual powertrain package before purchase.  60K Mercedes W204 M271.820 Engine & Gearbox | Premium