Mercedes-Benz E-Class E 200 common faults.

2013–2016, saloon, petrol, 184 HP.

The fault list covers: M274DE20AL engine, MB7229 transmission.

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4 fault write-ups. All are important. 8 recalls.

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

Before you buy

Known faults

4 important faults

critical1

Faulty weld seam on the camshaft: a recall, free replacement

critical

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

expensive3

M274 2.0 turbo: crankcase ventilation (PCV) control valve failure

expensive

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

7G-Tronic (722.9): mechatronics and conductor plate

expensive

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

Airmatic air suspension: leaking air spring, overworked compressor

expensive

The Mercedes Airmatic system holds the ride height with air springs and electronically controlled dampers. The most common faults over time are the relay, the compressor and a leaking air spring or air line.

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The rear air springs of the 2003 to 2009 E-Class (W211) are particularly prone to leaking along the clamps. If the system leaks, the compressor runs continuously, overheats and fails, so an unrepaired leak takes the compressor with it.

Symptoms: one corner of the car sinks by morning, an "Air Suspension" or level control fault message, and compressor noise while standing. It was an option (or standard) across several generations from the W220 S-Class onwards; the estate E-Class often has air springs with level control on the rear axle as standard.

between 100,000 and 220,000 km

What to check

In the morning, before setting off, look at all four corners: an uneven stance means a suspected leak
With the car standing, listen to the compressor: continuous running indicates it is overworked
Ask for a fault code read on the suspension controller (level and pressure sensor codes of the C1132 / C1144 kind)

3 more steps in the write-up

Official recall8 recallsShow

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

Most recent: 13 February 2015

15V088000STRUCTURE:BODY:HOODSTRUCTURE:BODY:HOOD13 February 2015 · NHTSA (USA)

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2013-2015 E350 Sedan, E350 4Matic Sedan, E350 4Matic Station Wagon, E400 Hybrid Sedan, CLS 550 CGI, and CLS550 4Matic, 2013-2014 E550 4Matic Sedan, 2013 E63 Sedan, E63 Station Wagon and CLS63, 2014-2015 CLS63 4Matic, E63 4Matic Sedan, E63 4Matic Sedan "S", and E63 4Matic Station Wagon, 2015 CLS400, 2015 E400 Sedan, E400 4Matic Sedan and CLS400 4Matic and 2014 CLS63 "S". The affected vehicles have a rubber seal at the back of the engine bay that may temporarily stick to the hood when it is opened and then may fall into the engine bay when the hood is closed.

Risk: If the rubber seal falls into the engine compartment, it may contact parts of the exhaust system, increasing the risk of a fire.

Remedy: MBUSA will notify owners, and dealers will attach four additional retaining clips to the rubber seal, free of charge. The recall began March 6, 2015. Owners may contact MBUSA customer service at 1-201-573-5339. MBUSA's number for this recall is 2015020001.

The authority's notice

14V818000SEAT BELTS: REAR/OTHER:BUCKLE ASSEMBLYSEAT BELTS: REAR/OTHER:BUCKLE ASSEMBLY24 December 2014 · NHTSA (USA)

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2015 E250 Diesel, E250 Blue Tec 4 Matic, E350 Sedan, E350 Sedan 4 Matic, E350 Wagon 4 Matic, E400 Sedan, E400 Sedan 4 Matic, E63 Sedan, and E63 Wagon vehicles manufactured October 8, 2014, to October 24, 2014. In the affected vehicles, the double seat belt buckle for the middle position of the rear passenger seat could fail under loading experienced in a severe frontal crash.

Risk: If the middle position double seat belt buckle assembly fails under load such as in a severe frontal crash, there is an increased risk of injury to the seat occupant.

Remedy: MBUSA will notify owners, and dealers will replace the double seat belt buckle, free of charge. The recall began February 2, 2015. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2014120006.

The authority's notice

A12/00618/20Safety recallFireno date · EU Safety Gate

Moisture can penetrate into the busbar, giving rise to conductive contacts between the individual lines inside it. The resulting current flows could overheat the plastic material of the busbar, increasing the risk of fire.