jamespaul

My tire pressure is now at 32psi when cold. Still jolts. Will most likely change to non-RFTs when the stock tires are worn

cwneff

Well, here is my list, a real shame as I really like how the car rides and it is just the right size, I'm a long time MB owner so I have no words

The first one I had - a 2016 GLC 300 - I was switched to a 2017 so I have the added benefit of seeing if the 2017s improved.
- all of the driving aides would just turn off (blind side, frontal impact, traction control, auto headlights, etc) and the car would go into limp mode, could not even accelerate under 15 MPH. This would usually happen on rainy days and at any speed, including highway. Turn car off and back on it fixed itself with a reboot -> that was due to a loose connector to the main computer that plagued early E-Class cars, took MB months (it was corp) to figure it out.
- All of the lights just turned off one night, back up camera failed and even the directional blinkers -> that was due to a faulty fuse box, not the fuse, the whole box
- strong smell of gasoline at times, raw gasoline, they never pinpointed it but after the fuse box was replaced it never returned.
- Front struts were faulty so replaced
- something else faulty up front in the suspension/steering and that as replaced
- LED eyebrows over headlights would randomly illuminate even when car was locked and off, just one eyebrow and it varied which side, no rhyme or reason. Was not the directional signal which you can do with a manual setting - they never figured that out but it has been reported a few times by other owners and on this forum.
- rattling center console screen, just lived with it and in later models the plastic is much more robust
- that feeling the front suspensions is about to rip itself off of the car after going over some bumps on the highway, extreme cowl shake was a bonus - RFT issue

After all of the electrical issues we were having they replaced the 2016 with a 2017 - I wish that was it, here we go with the 2017
- oil leak after 2,000 miles
- transmission leak after 8,000 miles
- rear differential/axle lube replaced, there is a technical bulletin on this to stop the loud whining sound after car is fully warmed up and occurs during sharp turns at low speed
- that feeling the front suspension is about to rip itself off of the car after going over some bumps on the highway, cowl shake is still a bonus but less extreme - RFT issue
- improvement on 2017s was the dash plastic, especially around the command screen were improved. Also the shaking of the front end over bumps is still there but lessened - same exact tires. The transmission was programmed differently, it now goes into N if you let it for coasting in ECO mode. Also in ECO mode if it is cold out and the transmission is not warmed up it won't shift above 7 unless you force it with paddles - COMFORT is not effected by this, odd programming

FYI - if you ever experience anything like I have it is a good idea to take pictures, I did during the 2016 cars driving aid failures. Not to fight MB but to help them pinpoint it. See, the computer logged none of it, it simply recorded that a whole failure occurred, that was it, no details but that something very bad happened, ya think. So pics of the warnings I was getting on the screen helped them track it down. I took a video and it was like a Xmas tree as the car was counting down to self destruction with one failure warning after another. They said I was the first to experience this, I'm a lucky guy.

Otherwise it is a wonderful vehicle.....slight cough

Rmlasalle

carnutt

ayilar

For those with complaints re: suspension harshness, what wheels do you have -- 18, 19, or 20"?

PeteInGilroy

For me, I'm not sure which package it's included in, the speed limit display on the Nav Screen only shows when on the freeway (65 mph). It's supposed to show on all roads. I think it's because I have Map Version 10, and I need Version 11. I'll have it checked when I go in for the rear seat belt recall. Also, I get an occasional rough downshift from 3 to 2, when slowing to a stop.

waylo

We've owned our 2018 GLC now for almost 2 weeks, and there's a new rattle coming from the dashboard somewhere closer to the passenger side. Damnit MB.

dieseldoc

I have 19 inch with regular suspension. No issue with harshness.

CasemLuke

Sorry to hear that -- I had one from the back drivers side. My dealer is amazing with trouble-shooting these rattle issues... they go above and beyond. They discovered the rattle was actually something with the rear seat mechanism. They've replaced the mechanism and now it's silent again! Point being, bring it in ASAP -- as I feel you get a better response since they realize the car should be in near perfect condition -- so they are anxious to resolve any issues.

waylo

Thanks for the reassurance @CasemLuke. I drove it again the other day listening specifically for it (the car's mainly my wife's) and it wasn't quite so notable, so we'll be listening for it in the future. On our 2016 GLC there was a sound issue with a forward passenger strut and they fixed it immediately when we brought it to their attention, so I won't be doubting the dealer's ability to troubleshoot.

The 2018 GLC loaner we had while ours was having the seat belt recall though was a creaky/squeaky ******* (brakes and internally) and we were happy to turn that one back in.

ramseyjr

I have this same issue with my 2018. I've heard a number of people discuss it's not the speaker per se, but the 1) speaker holder 2) seat adjustment switch 3) the frequency of the station.
Haven't brought it in yet, but would love to hear what you find out if you do before me.

schroedinger

2016 model:

1. Brake squeal. Only happens when cold, and car has been sitting a few hours. On second fix now; so far so good, but this took a while to reappear after first fix.
2. Chatter in left side of dash for 5 minutes or so after starting. Again, mostly when cold outside.
3. My satellite radio would not work when I started it up, at random. Locking the car, walking away, and coming back would fix it. Hasn't happened since the latest service when they did a software update.
4. One of the front parking lights would come on while the car was parked, at night. Happened 4 times in first 2 years. Again, hasn't happened since latest service.

ajmtbm

[QUOTE=schroedinger;7429738]2016 model:

1. Brake squeal. Only happens when cold, and car has been sitting a few hours. On second fix now; so far so good, but this took a while to reappear after first fix.
2. Chatter in left side of dash for 5 minutes or so after starting. Again, mostly when cold outside.

1. same here. its been about three thousand miles and weather is getting warm. will be interesting o see if it comes back when cold 6 months from now
2. i have a very minor noise from that area. dealer said it is normal (it is very VERY faint). i read somewhere here someone had an issue with i believe the motor that adjusts the vents, that is what was making the noise. the noise isn't terribly bothersome to me since it is so faint and barely noitceable, im just worried that once out of warranty it will fail.

dizneyman

I share the same as you. Eight months of nothing but enjoyment. Only trip to dealer was for seatbelt recall, 1 hour later on the road again.

Roowah

Hmmmm....where do I begin.

1. Squeaking gas pedal - replaced
2. Clunking noise over bumps - Front strut and rear suspension pieces replaced - Still hear rattles
3. Various creaks, rattles, and vibrations inside the cabin over uneven pavement - Felt taped everywhere and more keep appearing.
4. Driver's seat makes creaking noise - Repaired but came back.
5. Freezing issue once with the Comand system while on SAT radio - Software update and hasn't come back.
6. Excessive wind noise on highway - Replaced side glass with acoustic glass. Fixed.
7. Electric relay type sound coming from near the left front vent housing - Defective actuator causing the noise. Had to REMOVE MY DASHBOARD to replace it. Fixed.
8. Dash panel on passenger side is loose - Will be addressed on next appointment.
9. One of the springs for the hinges on the rubber LATCH flap is broken - Will be addressed on next appointment.

All this in a car that's less than a year old and less than 10K miles on it. To say that I'm disappointed with this car is an understatement. I had great luck with the BMW's I owned prior to going to MB. I've had a conversation with the service manager who agrees that this is very excessive for a brand new car. I think this may be my first and last MB unless there can be some type of resolution.

ajmtbm

That is a lot, i too would be unhappy for sure. Hopefully they can do something for you.
Was yours built in Germany or Finland?
How difficult was it to get the dealer to replace with the acoustic glass? i am bringing this up at my next visit. The wind noise is not horrible, but it is there and I'm hoping i can get the new glass and make it just a bit better

Also i have #7 to a very minor degree - brought it up and they said it was normal (noise is very faint). Now i'm wondering whether to bring it up again - not sure if the whole dash being removed is better than a small noise. Was yours a very loud noise and did it occur only at car startup? And it is hard to determine whether the noise is actually just the sound of the servo working.

Roowah

I believe it was built in Germany, but I'll need to double check that on the sticker. Is there another way to confirm this (i.e. via the VIN)? It wasn't difficult at all at my dealer to replace the side glass with acoustic. In fact, after I made the complaint, they voluntarily suggested it. I did point out to them that I thought it strange that my windshield is acoustic glass (it says so), and the side glass was not. So maybe that had something to do with their decision. It definitely made a noticeable difference in the wind noise and general quietness of the cabin. As for #7, the noise was faint as well but definitely audible when the radio wasn't on, and typically during start up. Although I remember hearing it while driving as well. If it's the same issue, they said the only way to get to it was by removing the dash. Of course, I found this out after it was repaired, although I probably would've had them do it anyway since I wanted it repaired.

taphil

My GLC43 had it too. I was just going to wait to bring it in for service and get it fixed at same time. But it disappeared at about 1000mi, and now with 4500mi hasn't come back.

ajmtbm

to find out where it was built, check the B pillar driver side at the bottom, same label where its shows the tire pressures,
i believe you can also tell by one of the VIN digits, i dont recall which one

mtberman

rabinzx

Mine worn out at 17500 miles

Vaboy

schroedinger

I've owned vehicles built in Sindelfingen (E320, E350), Breman (CLK320, GLC300), and Tuscaloosa (ML 350, ML550), and the Tuscaloosa vehicles have been the best quality.

sgmstr

same issues here. Also, not sure if it only applies to GLCs, you can literally get locked out if you're not careful. My wife opened the door from the passenger side and place her bag that had the key in it then place the bag in the passenger side. somehow the lock button was pressed then got locked out. luckily, she used her app to unlock.

shock mount failed. Took dealer almost one week to diagnose and replace. no issues since then.

sgmstr

18 wheel . MY2016. Very very harsh.