Skip the auto shop - Our mechanics make house calls

Q: knocking sound from the back of the car

asked by on

hi when i slow m car down to stop i hear and feel a knocking and the same feeling when go to reverse

My car has 200000 miles.
My car has an automatic transmission.

A: Hello there, many faults will cause a knock...

Hello there, many faults will cause a knocking noise in your 2002 BMW 325i. The most common is the driveshaft, drive axles, differential gears, transmission mount, or the rear struts. A qualified Technicians such as one from YourMechanic will be able to inspect your vehicle, diagnose where your knocking noise is coming from and make any repairs required to resolve it.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Hesitation when shifting gear and clanking noise and lack of power during acceleration

Hi there. It would appear there is a combination of problems happening with your vehicle. First, the transmission fluid and engine oil leak(s) need to be addressed. The fluid loss may account for the burning smell. The Check Engine Light...

Q: BMW e90. my drive belt tensioner.

Hi there. When the drive belt tensioner makes noises it typically means that it's loose and that the belts may be close to breaking. It's hard to tell you for certain if driving the vehicle with a damaged tensioner is...

Q: My car steering pulls and turns

Since you've only supplied the year of your car there is not much information for me to go on. For example, you may have electric steering or standard steering. You may have lane change assist or other possible options that...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.