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Mercedes-Benz C-Class C 180 Kompressor BlueEFFICIENCY Elegance common faults.

2007–2011, saloon, petrol, 156 HP.

The fault list covers: M271KE16ML, M274DE16AL engine, MB7226, MB7229 transmission.

What you save stays on this device only. My saves

7 fault write-ups. All are important. 14 recalls.

If you know the year, pick it. Faults for other years drop out of the list.

Before you buy

Known faults

7 important faults

critical3

The solenoid of the camshaft adjuster is sealed from the factory by nothing more than a plain sealing ring, and over time that starts to leak. The maker's own bulletin names two places: if the leak is between the solenoid and the cylinder head, the sealing ring has to be replaced, and if it comes through the electrical connector, then the solenoid itself.

Show the rest

The more serious trouble is at the connector. Through it the engine oil gets into the engine wiring harness and travels under the insulation by capillary action, so it reaches the engine control unit and other important parts as well. The loss of the control unit is the end of that road, and serious engine damage can follow; alongside the contaminated harness the most varied fault messages can appear. Cases have been reported where the oil ran out of the connector, and the consequential damage after that was already large.

The check is simple: the connector of the solenoid has to be taken off and looked at to see whether it is oily. In the fault memory a faulty solenoid gives one of the codes 0059, 0060, 0063, 0064, 0271, 0272, 0275 and 0276. One thing is worth knowing: according to the maker only the solenoid that has a corresponding code has to be replaced, so if a workshop has changed all four of them alongside two codes, that is worth asking about.

The engine number decides what is in the car. Above engine number 2729..30 759427 (M272) and 2739..30 193592 (M273) the maker already fitted the improved solenoid, under part number A272 051 01 77. The oil-leaking solenoid is a problem on engine numbers below 2729..30 895140 and 2739..30 236360.

The prevention is the oil stop cable, which has to be fitted between the solenoid and the harness: the two wires contain a sealed copper sleeve covered with heat-shrink tubing, and that stops the oil from travelling further. It is available from the factory and is not expensive: the two solenoids were around 33 euros and the two oil stop cables around 31 euros, while replacing the control unit is a four-figure sum.

between 90,000 and 130,000 kmfrom 31 EUR

What to check

  • Ask whether an oil stop cable has been fitted between the camshaft solenoids and the harness
  • Ask for a check: taking the connector off the solenoid shows whether it is oily
  • Read the fault memory and look for codes 0059, 0060, 0063, 0064, 0271, 0272, 0275 and 0276
3 more steps in the write-up

On engines built between July and September 2015 the supplier made a mistake in the welding process, so the weld seam on the camshaft is not as it should be. According to the authority's notice the fault affects individual M270 and M274 four-cylinder petrol engines.

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On the affected cars the camshaft can break, and in doing so it damages the engine and shuts it off. The engine cannot then be restarted, the car comes to a halt, and in the words of the notice this increases the accident hazard.

As a precaution the maker prescribed replacement of the camshafts. The campaign started in November 2015, the target date for completion was the end of 2016, and the replacement is free for the owner.

At a purchase two things have to be cleared up: does the car fall into the production window, and if so, has the recall been carried out on it. The franchised dealer can answer that from the chassis number.

What to check

  • Check the production date of the engine: the examples from between July and September 2015 are affected
  • Ask whether the recall has been carried out, and ask for proof of it
  • If there is no proof, ask the franchised dealer with the chassis number: they can tell you
2 more steps in the write-up

On the four cylinder, supercharged 1.8 M271 the timing chain stretches and the sprockets of the camshaft adjuster (Nockenwellenversteller) wear out. The two go together: a stretched chain makes the adjuster work worse, and a worn adjuster loads the chain further.

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The symptom shows up on a cold start first: a short, metallic rattle or knock from the front of the engine that quietens after a few seconds. Later an engine warning light and timing control fault codes join it.

In the official complaint database the four cylinder M271 model group (C 180/200/230/250, E 200, SLK 200/250, GLK 250, CLS 250) has 16 reports between 2008 and 2015, and 8 of those carry a mileage. The raw numbers fall between 61,000 and 152,000 km, from eight reports.

All 16 reports fall on the 2012 to 2014 model years of the C 250. The complaint texts repeatedly mention the maker's extended warranty.

On a warm engine the rattle cannot be heard.

reported complaints only

What to check

  • Start it cold: the chain rattle is audible in the first few seconds and disappears once warm
  • Do not accept the seller bringing the car warmed up; ask them to start it from standing, cold
  • Ask for a fault code read: timing control and camshaft position codes
3 more steps in the write-up

expensive4

On the 2.0 turbo four cylinder (M274, and the transverse M270) the control valve of the crankcase ventilation system fails early. The official database holds 259 reports on it, almost exclusively on the 2015 to 2019 C 300 and GLC 300 versions.

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The symptom: the engine warning light comes on, and diagnostics returns a fault code complaining about crankcase ventilation valve performance. Alongside it you get a fluctuating idle, a whistling or sucking noise from the engine bay, and sometimes harder starting.

The valve is part of the intake system, and if it sticks open or closed the engine either draws false air or the pressure in the crankcase rises. The latter pushes the crankshaft seals out, and from then on you have an oil leak. The valve itself is a cheap part, but getting to it is not always cheap.

On the same engine generation the complaints also include 27 reports of a cracked piston (weighted to the C 300 in 2015 and 2017). That is much rarer. If the engine burns oil or knocks, do not think only of the ventilation valve.

The official data is American, and the 2.0 petrol is far more common there than in Europe.

between 64,000 and 145,000 kmreported complaints only

What to check

  • Ask for a fault code read and look for the code on crankcase ventilation valve performance: that is the characteristic entry
  • Listen to the engine bay at idle: a whistling, sucking noise points to a torn valve diaphragm
  • Look around the valve cover and the crankshaft seals for oil leaks: the consequence of raised crankcase pressure
2 more steps in the write-up

In the Mercedes 7 speed 722.9 automatic (7G-Tronic / 7G-Tronic Plus) the mechatronics unit and the conductor plate (Leiterplatte) age over time: jerking on shifts, delayed engagement, a "Getriebe schützen" message, and fault codes on the gearbox electronics.

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The repair is typically replacing the mechatronics unit or the conductor plate together with an oil change: not the whole gearbox. The complaint is most common on the longitudinal platforms from around 2005 to 2015 (C/E/ML and the early GLC).

The 9G-Tronic (725.0) is a different design; this applies only to the 7G.

between 100,000 and 220,000 km

What to check

  • Try it cold and warm: a delayed 1 to 2 or 2 to 3 shift is suspect
  • Watch for the gearbox warning or the "Getriebe schützen" message on the dash
  • Ask for a fault code read on the gearbox controller (not just the engine codes)
1 more steps in the write-up

In the W204 C-Class era the electronic steering lock (ESL) built into the steering column can fail. The key is in place and turns, the dash may even come to life, but the steering lock does not release, so the engine will not start.

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In the official complaints the 2008 to 2015 model years carry 78 reports, clustered on the 2009 and 2011 C300. The measured mileage is high: a tenth of the complaints fall below 113,000 km, half around 151,000, and a tenth above 274,000.

The fault arrives suddenly, and the car stays where it is, so it needs a flatbed. The repair involves the steering column, and the unit is coded, so a used part is not an option; replacing or refurbishing the steering lock is the usual route.

Not one of the 78 reports mentions a shutdown while driving, fire or injury. The ESL fails at startup, not in service.

between 113,000 and 274,000 kmreported complaints only

What to check

  • Start the car several times, cold and warm: an ESL fault is intermittent at first
  • Watch whether the steering moves when the key goes in: releasing the lock has a characteristic sound
  • Ask for a fault code read on the steering column module (ESL / EZS)
2 more steps in the write-up

The Mercedes 5 speed 722.6 automatic (5G-Tronic / NAG1) has three faults that also recur on the used market: (1) the control electronics sit inside the gearbox housing, and a leaking connector lets oil onto the electronics; (2) cooling faults around 2003 (and later) can let antifreeze into the ATF, which shortens its life; (3) wear of the torque converter lock-up clutch contaminates the valve body and causes jerky shifts.

Show the rest

The early cars (1995 to 2001) had planetary gear and freewheel wear; after 1998 to 2001 the design improved, and on the used market the W203/W211/W220 era is the typical find.

between 120,000 and 250,000 km

What to check

  • Try it cold and warm: jerking or delayed shifts are suspect
  • Look at the colour and smell of the ATF: burnt oil points to wear, and a "milky" emulsion means antifreeze in the ATF
  • Ask for a fault code read on the gearbox controller
2 more steps in the write-up

Checklist

Mercedes-Benz C-Class C 180 Kompressor BlueEFFICIENCY Elegance

First what you would check on any car. Then the faults of this model.

Before you buy

Checklist

The printed sheet starts with what you would check on any car. What you tick stays on this device only.

On every car

Ask the owner

vinkodex.com · Before you buy it, see what can go wrong.

Official recall14 recallsShow

The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done.

Most recent: 22 May 2020

20V298000AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULEAIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE22 May 2020 · NHTSA (USA)

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012 C250, C250 Coupe, C300, C350, C350 Coupe, C63 AMG, and C63 AMG Coupe vehicles equipped with a front passenger air bag assembly replaced under a prior recall. An incorrect replacement front passenger air bag may have been installed.

Risk: An incorrect passenger air bag may not provide adequate protection, increasing the risk of injury in the event of a crash.

Remedy: MBUSA will notify owners, and dealers will replace the passenger air bag module, free of charge. The recall began July 10, 2020. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2020060011.

We could not check this: model year. The authority's notice

A12/1352/17Safety recallFire1 September 2017 · EU Safety Gate

The starter current limiter may be overloaded and overheat. As a consequence, the surrounding components could ignite, leading to a fire.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: 01/09/2017

We could not check this: model year. The authority's notice

17V252000STEERINGSTEERING12 April 2017 · NHTSA (USA)

Mercedes-Benz USA LLC. (MBUSA) is recalling certain 2013-2014 C250, C300 4MATIC, GLK250 4MATIC BLUETEC and GLK350 vehicles, 2013 C250 Coupe, C350, C350 4MATIC Coupe, C350 Coupe and C63 AMG Coupe vehicles, and 2013-2015 GLK350 4MATIC vehicles. The steering coupling connecting bolt may have been insufficiently tightened, possibly resulting in a loss of steering.

Risk: A loss of steering can increase the risk of a crash.

Remedy: MBUSA will notify owners, and dealers will inspect the steering coupling connecting bolt, tightening it as necessary, free of charge. The recall began May 2017. Owners may contact MBUSA customer service at 1-800-367-6372.

We could not check this: model year. The authority's notice

14V177000EXTERIOR LIGHTING:TAIL LIGHTSEXTERIOR LIGHTING:TAIL LIGHTS11 April 2014 · NHTSA (USA)

Mercedes-Benz USA, LLC (Mercedes) is recalling certain model year 2008-2011 C300, C300 4Matic, C350, and C63 AMG vehicles manufactured January 26, 2007, through July 13, 2011. In the affected vehicles, a poor electrical ground connection may result in the dimming or failure of the tail lights.

Risk: Dimming or failure of the tail lights reduces the ability to warn other motorists of the driver's intentions of stopping or turning, increasing the risk of a crash.

Remedy: Mercedes will notify owners, and dealers will replace the bulb holders if not previously updated and replace any corroded connectors, free of charge. The recall began on August, 18, 2014. Owners may contact Mercedes at 1-800-367-6372.

We could not check this: model year. The authority's notice

A12/00280/20Safety recallInjuriesno date · EU Safety Gate

The adhesive bond between the glass panel and the sliding-roof frame may not meet the specifications. As a result, the glass panel could become completely detached from the vehicle, posing the risk to the following traffic.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00323/21Safety recallFireno date · EU Safety Gate

The maximum permissible operating temperature of individual diodes on the alternator rectifier bridge could be exceeded and the diodes could subsequently fail. Consequently, an improper flow of current from the on-board electrical system battery through the alternator to the vehicle earth could occur. As a result, the windings in the alternator stator could be heated to such an extent that an outbreak of fire cannot be ruled out.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00391/23Safety recallInjuriesno date · EU Safety Gate

Due to improper adhesive bonding of the glass panel to the sliding roof frame, the panel may detach from the moving vehicle, creating a risk of an accident, injuries. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00730/21Safety recallInjuriesno date · EU Safety Gate

The polycarbonate roof panel located between the windscreen and the panoramic roof may not have been bonded correctly to the vehicle during a prior repair. In such cases, the adhesive bonding could gradually deteriorate and the panel could become detached from the vehicle, posing a risk to other road users. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/0082/17Safety recallInjuriesno date · EU Safety Gate

The power-assisted steering control units may have been fitted with defectively welded contacts. As a result, a permanent electrical connection between the contacts cannot be guaranteed, which could lead to loss of support to the power-assisted steering and thus an increased risk of accidents.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/0164/19Safety recallInjuriesno date · EU Safety Gate

There may be cracks in a securing nut in the steering gear of rear-wheel-drive vehicles. The nut could consequently break if the steering system is subject to a very high lateral force, which could result in rotating parts in the steering gear affecting the casing and thereby blocking the steering system.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/0296/19Safety recallInjuriesno date · EU Safety Gate

In vehicles with rear-wheel drive, a lock nut in the steering gear may be cracked. Consequently, when the steering is placed under high forces it could break, which would block the steering gear and increase the risk of accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/0561/17Safety recallInjuriesno date · EU Safety Gate

The steering coupling might not have been screwed to the correct torque specification. As a consequence, the steering coupling can become detached from the steering wheel axle and it would become impossible to steer the vehicle.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/1733/17Safety recallInjuriesno date · EU Safety Gate

The steering column is not sufficiently earthed. As a result, in the event of an electrostatic discharge, the driver's airbag may be triggered when not required. This could cause an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

SR/03711/24Safety recallInjuriesno date · EU Safety Gate

The three aluminium screws of the steering box may corrode due to exposure to spray water and aggressive road-grit (salt) used for melting ice. Advanced corrosion could weaken the screws, leading to potential breakage during manoeuvring or parking. If all fixing screws fail, the power-assisted steering could detach, resulting in a loss of power steering and an increased risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

Engine and transmission

2 engines · 2 transmissions

M271KE16ML

115 kW (156 HP) · petrol

MB7226 · 5G-Tronic, longitudinal (Mercedes 722.6 / NAG1)

automatic · 5 speed

Torque limit600 Nm
MakerMercedes-Benz

We built the code from the model and the gear count. The factory sheet does not state it. More than one engine code is possible. The fault list shows the faults of each. More than one transmission is possible. 5 gears = MB7226, 7 gears = MB7229.

Variant data

What is in this version

Factory data

Trim
C 180 Kompressor BlueEFFICIENCY Elegance
Body
saloon
Fuel
petrol
Transmission
automatic
Engine size
1597 cc
Power
115 kW (156 HP)
Drive
RWD
Production
2007–2011

Factory service interval

The manufacturer specifies this for this version. Of the mileage and the time, the one that comes first is the one that counts.

  • Air filter

    • 60,000 km or 4 years
  • Cabin (pollen) filter

    • 30,000 km or 2 years
  • Brake fluid change

    • first: 3 years, then 2 years(first change at 3 years, then every two years)
  • Spark plugs, petrol

    • 60,000 km or 6 years

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms