My experience with the E280 CDI Estate, which I just acquired, has been rather remarkable.

[SushySosa]

I would want to document the issues I have encountered with my stunning, deep blue 2006 E280 CDi Estate.
I purchased the vehicle from a local dealer in Surrey. Since I reside in Scotland, I travelled by air to Gatwick and then took a train to the town where the automobile was located. The automobile was in excellent shape, with just 86,000 miles on it. It had a comprehensive service history and all of its components were functioning properly. I drove the vehicle to a friend's residence in Oxfordshire and stayed overnight. The following day, I proceeded northward by entering the M40 at Bicester. It was at this point that I saw a little emission of smoke from the back of the vehicle. The condition deteriorated gradually and the engine was emitting excessive exhaust even with little acceleration. The situation was really humiliating. The vehicle was in limp mode without any indication from the check engine light. However, the issue improved by the time I arrived at The Lakes. Nevertheless, as I accelerated forcefully while leaving Tebay services, a significant amount of black smoke was emitted. Arrived home without any difficulties.
The diagnosis of the issue began the next day. It was discovered that the air intake was damaged at the point where it connects to the turbo, and the orange seal was deteriorating. Discovered a high-quality original equipment manufacturer (OEM) used part and installed it, along with a new positive crankcase ventilation (PCV) valve.My scanner detected a "low fuel pressure" and "Oxygen sensor fault" error, therefore I replaced the faulty component. Lambda successfully removed the soot-covered old codes and discovered that the vehicle was still in limp mode. Consequently, a new fuel rail pressure sensor was procured and installed after mistakenly ordering an incorrect one, which was promptly returned. The codes have been cleared and the performance of the system has much improved. There is no longer any smoke emission and the engine is generating enough power. Additionally, the gear transitions are very smooth. I have just returned from a successful journey covering a distance of 300 miles. I am delighted to have resolved the issue independently. I have no knowledge of the potential expenses if I had brought it to a garage, but overall, I have spent around £500. I am optimistic that I will be reimbursed half of this amount by the dealer.
Admire the automobile. The next task is to replace the boot lid struts, since the boot continues descending unexpectedly.

[SushySosa]

I am uncertain about the exact origin of the black smoke initially. My first hypothesis was that the PCV valve had malfunctioned, leading to oil being expelled into the turbocharger. This assumption was based on the presence of oil surrounding the turbocharger intake. However, when inspecting the PCV valve, I found it to be in good condition. Possibly, the fuel pressure sensor may have resulted in excessive fuel supply, leading to the emission of black smoke, which then caused the malfunction of the oxygen (O2) sensor.
Perhaps the malfunctioning air inlet batwing component was causing the Engine Control Unit (ECU) to get abnormal readings from the Mass Airflow (MAF) sensors, resulting in excessive fuel injection.
I am uncertain, but it is now functioning well.
I am astonished by the substantial and sturdy sensation of this vehicle. It is really remarkable.

I invested £500 on the automobile, mostly for the purpose of replacing or already replaced components. The PCV valve was likely the original part.

[Freelele]

Perhaps the combination of these faults leads to the presence of black smoke, which often indicates over fuelling. If the pressure sensor is indicating a low value. It would likely attempt to increase the quantity. In addition, a broken Turbo intake seal would let the entry of air after the air flow sensors, so causing confusion to the ECU. I'm pleased that you were able to resolve the issue on your own. And I trust that you will not encounter any more complications.

[BuffUpdate]

Congratulations for successfully doing the repairs - it is very gratifying when you are able to resolve the issue alone.

I own an automobile that is comparable, however it is from the year 2009 and has a higher mileage. I have driven 10,000 km since last year and completely repaired the suspension. However, I am still experiencing a little knocking sound, which I believe is due to the Febi components. Unfortunately, I have not had positive experiences with them lately. A toast to the new year!

I saw your previous post about a broken batwing, which is an often seen issue. In my case, I resolved the problem by replacing the damaged component with a silicone tee.

I am inclined to replace the O2 sensor as a standard procedure as it is the original one.

[RosaStyle]

Over the course of almost 9 years, I have driven a 2009 E280 cdi Sports Estate for a total distance of around 85,000 kilometres.
It has been my reliable and cherished tool for work.
A remarkable engine and a car loaded with advanced features.
Abundant power and luxurious comfort.
I have recently had to replace the tailboard struts, which was rather inconvenient but not too challenging after I became familiar with the task.
I purchased it from Mercland with a mileage of 111,000.
The current mileage of the vehicle is 195,000 km and it continues to operate well, just as it did when I first purchased it.
Have a pleasurable experience!

[SushySosa]

I also replaced the tailboard struts. This task, like many others, could be completed much more quickly if one were to do it again.
It is peculiar that despite owning many high-quality vehicles, including a new 911 Turbo via our company, I find myself really enthusiastic about driving the Mercedes. Even my wife, who owns a Tiguan, likes the Mercedes for lengthy trips, which we have taken on several occasions. Dogs also like it.
Despite being over 17 years old, the vehicle operates flawlessly. I like the convenience of being able to repair it in my own workshop, saving both time and money compared to bringing it to a professional.

[RosaStyle]

Over the course of the previous three days, I embarked on a journey from Leeds to Cobham in Surrey and then returned to Leeds. I made this journey in an E280cdi Sports Estate vehicle.
Accompany oneself and a companion carrying many bags of personal possessions.
I achieved an average fuel efficiency of little more than 41 miles per gallon while maintaining a consistent speed limit during my whole journey. Specifically, I travelled on the M1 and M25 highways in a southbound direction, and on the M25, M40, A43, and M1 highways in a northbound direction.
The traffic was sparse.
The era of enjoyable driving experiences is far from being ended!

[Thenornpo]

An exceptional 211 property is really difficult to surpass. In my opinion, a very commendable option is available at a very affordable price.