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Odd noise- what is causing it? (technical question)

If it has been sitting a while at the dealers without being moved, suspect distorted tyres especially if they are an aggressive low profile.

A few years ago I had an Audi A6 which would distort its tyres after being left for a even a few weeks. Come back from a three week business trip and the thing was pretty much undriveable. I’ve avoided stupid profiles since then.

As others have said, get them balanced; it will show up as soon as the wheel is out on the balancer.
 
Oh... so you spent some extra for the special dual clutch "sports" trans, special "sports" front axle, the special tuned "sports" suspension, and the special speed-sensitive "sports" steering. Why didn't you say so in the first place?


By the way, how's that working out for you?
OK.
So please give me the benefit of your wisdom and tell me what I should have bought and what upgrades I should be fitting.

Given I needed a daily driver, small estate (wagon), petrol, ideally with reasonable performance eg warm hatch.
Ideally with AWD, I live in the country side.
 
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OK.
So please give me the benefit of your wisdom and tell me what I should have bought and what upgrades I should be fitting.

Given I needed a daily driver, small estate (wagon), petrol, ideally with reasonable performance eg warm hatch.
Ideally with AWD, I live in the country side.



 

Ravers

LE
Kit Reviewer
Book Reviewer
Tyres and tracking.

My E Class was loud as **** when I first got it (2 year old car with 4000 miles on the clock).

It sounded like I was always driving over those rumble strip things they have to slow you down.

I think it was amplified because the car had a panoramic sunroof and pillarless windows. So lots of glass and not a lot of metal and insulation.
 

Blogg

LE
Post up on MB owner forums.

Suspect you will be find yourself being told there is a known issue with the rear different that causes thumping noises on turning. Not confined to 4 matic, but here is an example.

Mercedes-Benz C117 CLA 250 4MATIC: rear differential noise
In March 2015, Mercedes-Benz USA issued Service Bulletin LI35.40-P-060213for Mercedes-Benz C117 CLA 250 4MATIC vehicles. Due to a fault with the internal differential assembly, a thumping, grinding or chatter noise may be heard from the rear differential when turning. To test, the electrical connector for the all-wheel drive solenoid valve was to be disconnected and the vehicle taken for a test drive; if the noise was gone, this verified the condition and the rear differential was to be replaced.

 
If it is Approved Used how long is the warranty? The warranty on my Approved Used 4 year old German motor is 2 years and that was after a load of checks where they even replaced two tyres that were at 3mm of tread.
Go back and tell the dealer you're not happy and to sort it out.
 
Agreed, especially if the car has been standing. After a month of wasting time on one of my Honda's I swapped two wheels around and found the problem straight away.

Or just caused by heavy braking and a slight skid.
 
Agree with the focus on the tyres. I had an Audi A6 that developed a 'thump, thump, thump' that was speed dependent. I assumed it was wheel bearing related, but at the next service they showed that one of the tyres was down to the canvas on the inside edge only. I was asked where I lived and were there any speed humps around. I said yes, loads. The explained that everyone tries to drive over speed humps by straddling them, but of you look at the shoulders of many speed humps, they're often ragged and crumbling. In effect they're ripping your tyres to bits if you try to straddle them.
 


******* hell could you find anything more boring to drive. I'm not retired and wear a hat whilst driving.
I did consider the i40N but it was a bit too small. The Corolla comes with an optional Uber sign.

Kia and Hyundai SUVs come from the same factory. The interiors are made by Fisher Price.
Reliable maybe, but the residuals are dog toffee too.
Also the Sorento is huge and I don't want a school run mum SUV.

Kia Sportage/Sorneto, the stop start system fucks the battery if you do a lot of short journeys. You go back to the dealer, they apoloise and replace the battery (they don't they just charge it). You end up back there every week.



Show again for you I'm afraid. Difficult being a smart arse isn't it
 
Agree with the focus on the tyres. I had an Audi A6 that developed a 'thump, thump, thump' that was speed dependent. I assumed it was wheel bearing related, but at the next service they showed that one of the tyres was down to the canvas on the inside edge only. I was asked where I lived and were there any speed humps around. I said yes, loads. The explained that everyone tries to drive over speed humps by straddling them, but of you look at the shoulders of many speed humps, they're often ragged and crumbling. In effect they're ripping your tyres to bits if you try to straddle them.

I'm inclined to agree. Going for a second opinion now, I'll update what happens if folks are interested.

(Seems after emailing a couple of CEOs we are going to get the matter resolved gratis and quick sharp.
Amazing who is in my address book ;-). This part is almost worth a seperate thread.)
 
******* hell could you find anything more boring to drive. I'm not retired and wear a hat whilst driving.
I did consider the i40N but it was a bit too small. The Corolla comes with an optional Uber sign.

Kia and Hyundai SUVs come from the same factory. The interiors are made by Fisher Price.
Reliable maybe, but the residuals are dog toffee too.
Also the Sorento is huge and I don't want a school run mum SUV.

Kia Sportage/Sorneto, the stop start system fucks the battery if you do a lot of short journeys. You go back to the dealer, they apoloise and replace the battery (they don't they just charge it). You end up back there every week.



Show again for you I'm afraid. Difficult being a smart arse isn't it

I believe you will eventually find that spending more for a used shitbox because it's "certified" and wears a 3 point star, than a new shitbox with full warranty, is a bit more difficult, and even more expensive than the money you wasted satisfying your lust for a marque that you couldn't afford to buy the grownup version of.
 
I believe you will eventually find that spending more for a used shitbox because it's "certified" and wears a 3 point star, than a new shitbox with full warranty, is a bit more difficult, and even more expensive than the money you wasted satisfying your lust for a marque that you couldn't afford to buy the grownup version of.
OK, I'll bite. This has a full warranty, I won't be paying.
I'm a bit confused where you are going with this. So by your logic, if you buy a Mercedes (or similar marque), unless you buy the top of the range AMG, all lesser models are "shitboxes" and you would be better off owning a far eastern econo-box. Equally if you want performance, its full AMG or nothing. Strange. Thats a very polarised view.
And of the eastern brands Subaru and Honda are far superior. Even Suzuki (ultra reliable) .

I've owned New & Used, Ford, Vauxhall, Jeep, Merc, BMW, Subaru, Honda, Landrover- and they have been everything from a supermini to a Forester that would leave most things dead.
Trust me, if I wanted a C63 Est or C43 Est or CLA45 SB or maybe the A35, then I could have one.
I have access to a performance car when I feel the need, however this is for daily use. Have you actually ever driven a C63, its not exactly discreet and the CFO might pull a face when I smashing 18mpg on the company fuel card.

Had you suggested a Subaru Levorg or a Skoda Oct Scout then you might have been credible.

My last daily driver was a C220 Est - AMG line, Prem plus. Quick enough, comfortable, never missed abeat. lovely car to drive. Put it Sport+ and I was gone. would esily do 50mpg. Interestingly I changed from Conti Sport Contact5 to P Zero Nero GT and lost 4-5mpg. Went back to Zero pz4s.

Bought it new from Listers in Lincoln who are the best dealership I have ever dealt with. cannot recommend them enough. This would never of happened with them.
 

Trans-sane

LE
Book Reviewer
For a cheaper, short-term alternative simply turn the radio up. This may need to be adjusted upwards a few times over the weeks that follow...
 
A few years ago I was answering an emergency call to attend an incident in Andover. I came howling along the A34 with red wings glowing, blue light flashing and, as I came up the slip road to exit the A34 and approached the roundabout, I hit the switch for the two-tone horns. There was a car negotiating the roundabout ahead of me and I realised that the driver could neither hear nor see me. I dropped anchor massively. The vehicle passed in front of me, the driver completely oblivious to the presence of the EOD vehicle I was driving which was lit up like a Las Vegas casino and making more noise that the Black Dyke Mill brass band. After that I became aware of a quiet "flip flop" noise from the front wheels at low speed. The REME blokes later told me that my emergency stop had worn a flat spot on each front tyre.
 
Update: Local garage, which seem to know what they are doing have diagnosed- Wheel Bearing.

Thanks to (mostly) everyone for your input and thoughts.
 

Joshua Slocum

LE
Book Reviewer
******* hell could you find anything more boring to drive. I'm not retired and wear a hat whilst driving.
I did consider the i40N but it was a bit too small. The Corolla comes with an optional Uber sign.

Kia and Hyundai SUVs come from the same factory. The interiors are made by Fisher Price.
Reliable maybe, but the residuals are dog toffee too.
Also the Sorento is huge and I don't want a school run mum SUV.

Kia Sportage/Sorneto, the stop start system fucks the battery if you do a lot of short journeys. You go back to the dealer, they apoloise and replace the battery (they don't they just charge it). You end up back there every week.



Show again for you I'm afraid. Difficult being a smart arse isn't it
Subaru Forester
simples
 

OneTenner

LE
Book Reviewer
Well, Mercs were good enough for the Wermacht to use them as staff cars.... possibly the yanks get the hump 'cos they didn't steal them along with the V rockets and Werner Von Braun & co. - the Yank car industry is so cutting edge and has the best build quality doesn't it?

What's that? why are the Ford Mustangs so unreliable and have such poor fit & finish compared to the EuroShitbox Fords? -'cos they're built in the home of the automobile y'all! (or at least they were when I closed the door on working in Ford dealerships a couple of years ago).
 

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