M-Class (W166) Produced 2012-2015

Looking to buy an ML350/550 - Need advice!!!!

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Old Aug 26, 2019 | 12:31 PM
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2015 c400
Looking to buy an ML350/550 - Need advice!!!!

Hi everyone,

As my family is growing I am looking at trading in my C400 for an ML350 or 550.

I will be giving this car to my wife who will be using it as a family hauler and I will DD a cheaper car.

Can everyone give me some insight on reliability, years to avoid, issues, recalls, things to know etc...

Also, how reliable are the Bluetec's? Should I look for a 550 or be happy with the 350?

Thanks in advanced!
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Old Aug 26, 2019 | 12:48 PM
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Avoid the diesel variant. Read this site for extensive testimony. The M276 seems generally more reliable than the V8. Again, read this site to come to such a conclusion. My experience with the M276 has been positive so far. This site does not have much negative to say about the M276 engine.

The W166 platform seems generally reliable.

As with any preowned vehicle, buy the newest and lowest mile sample your budget will tolerate.
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Old Aug 26, 2019 | 12:54 PM
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Do some homework about how you want it equipped. My '14 ML350 CPO has been bullet-proof in 3 years of ownership.ll kinds of options that we really don't use, but we want a/c seats.

ML's might be getting long of tooth. Here's a link to our local dealer's site with CPO GLEs. You can see the original equipment sticker and the Carfax. With your wife being the primary driver, the CPO benefits and service loaners might be worth the piece of mind. Not many dealers offer access to the sticker, but every dealer can provide it if you ask them.

https://www.mbotw.com/used-vehicles/...%5D=GLE&page=1
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Old Aug 26, 2019 | 01:30 PM
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Thanks for the reply and thanks for the link - I'm in Canada so CPO GLE's are in and around the 40k-60k range which is above my price range.

I am looking to see if there are any major issues or recalls/unresolved problems with the car, maybe certain MY's to avoid.
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Old Aug 26, 2019 | 01:30 PM
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Thanks for the reply, looks like that engine is only in the C class, please correct me if I am wrong.
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Old Aug 26, 2019 | 08:40 PM
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2002 Ml320, 2012 ML350 & Slk55
I've been driving my ML350 (gas) for a year now.

2012, 63,000k's and $50,000 Aussie Dollars (same worth as yours).

My car is quite high spec as Aussie cars are highly specced.

The only problem I have had is the tailgate strut failed and I replaced it myself.

The wheels on the car were pretty battered and new tyres lasted less than 10,000k's until it was wheel aligned and it is now going well.

I have put 20,000k's on it and enjoy driving it.

My wife uses it in preference to her SLK55 as she doesn't care if anyone hurts my car!

I'd buy another.
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Old Aug 26, 2019 | 11:31 PM
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Originally Posted by philly_tee
Hi everyone,

As my family is growing I am looking at trading in my C400 for an ML350 or 550.

I will be giving this car to my wife who will be using it as a family hauler and I will DD a cheaper car.

Can everyone give me some insight on reliability, years to avoid, issues, recalls, things to know etc...

Also, how reliable are the Bluetec's? Should I look for a 550 or be happy with the 350?

Thanks in advanced!
Get yourself a 2015 ML350 4Matic. Perfect family car. No Airmatic to worry about. You can get some CPO still and they are reliable as they are the last year model with not much to go wrong. They ride very nice and are comfortable (much more comfy then any C Class) and there is plenty of space! You can find some with very low miles in new condition if you search and are willing to travel
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Old Aug 27, 2019 | 10:33 AM
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Try to buy a CPO. I purchased a 2015 ML350 in 2016 and have over 60,000 miles and it is still under CPO warranty for another year. Has been a trouble free car. the ML350 and GLE350 have enough power for all situations. Should be able to find a 2015 ML350 in the low to mid 20s. Make sure it does not have the standard halogen headlights, they suck.

If you really want some power then the ML550 is the one. 2014 was the last year of production, but maintenance cost will be higher. You can still find them CPO. Check this link below. You can search any specific model at Mercedes dealer that are CPOed

https://www.mbusa.com/en/vehicles/cpo/inventory
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Old Aug 27, 2019 | 12:11 PM
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Thanks for the reply!

I apologize for the ignorant question but is the 350 only available in Bluetec?
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Old Aug 27, 2019 | 04:15 PM
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ML 350 and be either Blue Tec (Diesel) or Gas


Gas Models:

ML/GLE 350 has 3.5 V-6

ML550 - 4.4 V8 (Twin turbo)

ML/GLE 400 3.0 inline six,(twin turbo)
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Old Aug 27, 2019 | 04:17 PM
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Originally Posted by philly_tee
Thanks for the reply!

I apologize for the ignorant question but is the 350 only available in Bluetec?
No, it is available in gas and Bluetec.

I have a 2014 ML350 gas 4matic. Has been very reliable for the past 45,000 miles. 90,000 miles on it now. Stick with the gas ML's 2014 and 2015. Do not get airmatic. Do get the lighting package (HID's) and Harmon Kardon stereo. Those are must have options. I average 19-21 mpg mixed city and highway.
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Old Aug 27, 2019 | 06:57 PM
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Ml350 bluetec
I own a 2014 ML 350 Bluetec. If your driving trips are all 4-8 km/3-5 miles or less, I would avoid the Bluetec. More so if you do not plan on pulling trailers/hauling stuff. Diesel vehicles in general need long runs, preferably at steady speeds. They need/like to be revved up periodically to clean out the DPF and NOX sensors. The Diesels in general like long trips, ie highway driven over 30+km distances. They do however have great bottom end torque for point and shoot driving in the city, they launch off the line like crazy for such a heavy vehicle. I have test driven various other V6 gasoline non-turbo vehicles, ie Toyota 4Runner, etc...and they are slow off the line and you are waiting for the Horsepower to build up.

I cannot attest to the performance of the ML 350 V6 or V8 as I am diesel fan.

Good luck in your search.
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Old Aug 27, 2019 | 07:47 PM
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I recently pulled up beside another W166 and tried to get ahead of it to merge lanes and it blew my petrol (gas) car away.

Only when he pulled ahead did I see the 350 Blutec sign.

Those diesels sure are quick but I'd never have one.

Don't like standing in a diesel puddle to fill it up and the dirty bowser handle are enough to stop me.
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Old Aug 28, 2019 | 12:37 AM
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Originally Posted by Zuffen
.....

Don't like standing in a diesel puddle to fill it up and the dirty bowser handle are enough to stop me.
That's just comical. I drove the Bluetec around DFW for 5 years and never had to stand in a diesel puddle at fill up. I always had a couple of latex gloves in the glovebox for fill ups.
Yes, that diesel handle is oily at the pump. That's a small price to pay for the time between fill ups.
The diesel rocks and it's quieter under acceleration than the gas alternative.
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Old Aug 28, 2019 | 12:41 AM
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EDIT: Oh no, the dreaded double post.

Last edited by DFW01E55; Aug 28, 2019 at 12:43 AM.
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Old Aug 28, 2019 | 09:56 AM
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Thanks for the replies everyone!

My wife doesn't drive very often as she is a stay at home. When she does drive, its to the grocery stores and the doctor appointments. etc.... As a family hauler we will be using it every other weekend for long trips to the cottage for sure.

Are there known issues with the Oil cooler seals, timing chain and swirl flaps in the intake? if so, are these big problems or something I should be aware of?

I am currently looking at a 2014 ML350 Bluetec and a 2013 ML350 Bluetec - will check them out this weekend.
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Old Aug 28, 2019 | 10:54 AM
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Ml350 bluetec
Originally Posted by philly_tee
Thanks for the replies everyone!

My wife doesn't drive very often as she is a stay at home. When she does drive, its to the grocery stores and the doctor appointments. etc.... As a family hauler we will be using it every other weekend for long trips to the cottage for sure.

Are there known issues with the Oil cooler seals, timing chain and swirl flaps in the intake? if so, are these big problems or something I should be aware of?

I am currently looking at a 2014 ML350 Bluetec and a 2013 ML350 Bluetec - will check them out this weekend.
Given the wife does not drive very often, and if she does drive it's to the grocery stores and doctor, I would not even look at Bluetec any thing. Those short trips are going to hurt the engine, yes you can kind of compensate with those long trips every other weekend.....Driving distances is key with the Bluetec Diesels. I will reiterate my previous post, any trips shorter than 20 km is bad for the Bluetec engines. More so because according to your profile you live in Toronto and during the winter the engine will never get up to operating temperature and therefore the engine oil and all the other systems will not function well. If she drives like 5 km each way to the grocery store that's not going to help. Diesels take a long time to get up to operating temperature compared to the gasoline/petro engine.

I just had the Oil Cooler Seals replaced on my 2014 ML 350 Bluetec did not know they were even leaking, so I cannot confirm if the dealer was lying or not, the repairs were covered by extended warranty. No issues so far with the timing chain. The swirl flaps were replaced at the same time the Oil Cooler Seals were replaced.
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Old Aug 28, 2019 | 12:50 PM
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Philly_tee, the advice you are being given is to avoid the bluetec diesel power train. If you choose to buy a bluetec vehicle, please ensure you do the research before your purchase.
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Old Sep 1, 2019 | 09:08 AM
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Thanks for the help everyone, I appreciate it a lot.

I went to see both 350 bluetecs yesterday and they were beautiful! We did not pull the trigger though as clearly the diesel isnt the right option for us. Thanks again for all the help and replies.

We are now waiting to find a 350 gas or 550.
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Old Sep 1, 2019 | 09:43 PM
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Originally Posted by philly_tee
Thanks for the help everyone, I appreciate it a lot.

I went to see both 350 bluetecs yesterday and they were beautiful! We did not pull the trigger though as clearly the diesel isnt the right option for us. Thanks again for all the help and replies.

We are now waiting to find a 350 gas or 550.
You stated this is for your wife as a DD family hauler. In that case you should only be looking at gas ML350’s. The V6 is more than enough power for your wife and the gas savings and maintenance savings is a no brainer over the V8 ML550. Also most 550’s come equipped with Airmatic which is another expensive headache down the road.
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Old Sep 2, 2019 | 03:59 AM
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Do not be scared with airmatics. I think an ML without one is a bad decision. You want a premium ride suv get a airmatic. I wont buy another MB suv without one. Also they sre correct with 350 gas. Way better in the long run vs diesel as thr cost of diesel maintenance literally will wash away all the fuel savings when it needs to be repaired. Stick with 14 or 15 year.
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Old Sep 2, 2019 | 09:42 AM
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Originally Posted by shotgun_banjo
Do not be scared with airmatics. I think an ML without one is a bad decision. You want a premium ride suv get a airmatic. I wont buy another MB suv without one. Also they sre correct with 350 gas. Way better in the long run vs diesel as thr cost of diesel maintenance literally will wash away all the fuel savings when it needs to be repaired. Stick with 14 or 15 year.
And I wouldn't buy another vehicle with one (especially German)! Only way is if I was leasing or buying CPO and dumping before warranty runs out.

Sure, airmatics ride better. But the stock spring setup in the ML is comfortable enough for me and more than capable for the wife. And when it comes time to replace the shocks, you can get all 4 OEM for under $1,000 that won't leak and leave your ride slammed to the ground as opposed to $1400 each with air shocks.

The OP seems to be looking for best value, a comfortable and reliable ride for his wife to haul their family. A stock gas non air ML is the best choice for reliability with a "premium ride".
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Old Sep 5, 2019 | 08:03 AM
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The diesel 350 and the gas 350 have the same acceleration performance from 0 -100klms - no difference. (around 7 seconds from memory)
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