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My 2007 E320 has become really noisy on the roads (roaring noises). I thought it was the tires but I replaced them and the noise continued. Anything over 35 mph. Also the odor of diesel exhaust is plentiful. Anybody got any suggestions about these items.

2,409 Posts
Need to narrow the possibilities:
Car running OK?
No codes present from a scan?
How many miles on car?
How long have you owned it?
Who maintains the car?
Noises sound speed related: car shifting properly?
Describe the noises if you can.
Diesel odors:
During driving?
At stop?


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