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2007 Mercedes C230 sport 44K miles - making roaring noise when it cranks and driving. noise will fade out the more you accelerate. I was told by a mechanic that they all do it. is this true or do you

Roaring noise when idled stops when accelerated high

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  • Cars & Trucks Expert
  • 268 Answers

No they don't always do that but I have found that a roaring noise could be from the tires and not the engine.

Posted on Apr 27, 2014

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Posted on Jan 02, 2017

motor1258
  • 6674 Answers

SOURCE: humbing noise from breather

Have you given the throttle body intake a good cleaning ?

Posted on Aug 30, 2008

  • 7 Answers

SOURCE: Ballpark price on 2007 Mercedes Benz C230 Maintenance B

The dealer near me charges $365 for a 4-cyl, $395 for a 6/8 cyl, or $425 for a 12-cyl. The only actual repair/maintenance you get for that price is an oil change (with Mobil1 and the MB filter, which are CRITICAL, ~$120 on its own) and tire rotation. This makes a lot of people think it's a scam, but really, it's a little steep, but definitely worth doing. The rest of the service consists of a massive inspection of your vehicle covering the following items.

-- Fluid levels
-- Tire tread/pressure/wheel condition
-- Air filter (inc. clean out housing)
-- Cabin air filter (inc. clean out housing)
-- Lubricate sunroof rails, locks, hinges, and seals on body.
-- Drive belt and tensioner
-- HVAC system operation
-- Instruments, cruise control
-- Wipers/washers/lights/horn
-- Windows/sunroof operation
-- Hoses
-- Transmission fluid
-- Brakes
-- Chassis/suspension
-- Driveshaft, inc. flex discs
-- Road test
-- Reset maintenance light

This is actually pretty essential to do, despite seeming like a lot of money for not much work. I have very rarely done one without catching a few things that the customer needs, and often it was a problem that would have gotten far worse had it been left to its own.

Posted on Feb 22, 2009

  • 137 Answers

SOURCE: bought used, 140,000 miles, roaring noise, brake light

3 suggestions for you, you may need to check the tire pressure, get a tire alligment done, or you have a bad wheel bearing, usally a bad wheel bearing make's a loud roaring sound going down the road. I hope I have helped you.

Posted on Jan 26, 2010

Lloyd Six
  • 560 Answers

SOURCE: My Mazda has just started making a loud roaring

It will either be an inlet or outlet fault so here you go:

Open engine lid, check that the pipe from the airbox to the engine is secure and not split, change or reconnect

If all ok there then it could be a catalyst blown or a gasket. Just get someone to listen while the car is held at 3000rpm.

Posted on Dec 07, 2010

  • 1 Answer

SOURCE: my 2007 mercedes c230 sport is making a whistling noise when I turn up my AC. What does this mean?

it could just be the heater fan getting blocked , i had a problem some what the same worth blowing down under grill near windscreen

Posted on Mar 12, 2013

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Hello,
I do agree with the person who mentioned
" Tire Noise". A few moments spent with a knowledgeable tire dealer will help
in your choice when it comes time for replacement,
Enjoy your Benz. A little homework will quiet it down real nice.
Wayne

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Bought used, 140,000 miles, roaring noise, brake light


3 suggestions for you, you may need to check the tire pressure, get a tire alligment done, or you have a bad wheel bearing, usally a bad wheel bearing make's a loud roaring sound going down the road. I hope I have helped you.

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Break pad


Pretty much anyone could do it, but you may be better off going with a dealer or a Euro-specialty shop since they'll have better familiarity with the car.

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