It is never relaxing to experience a noise in your car that you don’t know the source of. So, what if you detect a loud noise that continues on your BMW i3? It is extremely plausible that this is a minor problem, but before beeing sure, it is better to execute some checks. Whether that loud noise comes from the front of the vehicle, from the rear, whether it shows up when you accelerate or when you are parked, our team has made this content to help you solve it. First, we will detail the possible reasons for the problem according to when loud noise shows up on your BMW i3, and then we will give attention to the region of origin of the noise. In any case, if this noise persists, follow these suggestions to help you find the source.loud-noise-bmw-i3

When does my BMW i3 produce a loud noise?

One way to discern a noise from your BMW i3 is to establish when it occurs. Indeed, some complications can be linked to parts that are only stressed under certain types of conditions. It is this technique that we will focus on in this first part.

Loud noise BMW i3 when accelerating

Loud noise on BMW i3 that appears when you are accelerating can be symptomatic of several failures. In fact, if you experience a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will cause a much higher noise than during normal operation. Moreover, it is also highly plausible that loud noise on your BMW i3 is in connection with a wheel bearing, which is one of the most common origins of these types of manifestations. Another alternative is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also plausible that the problem may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it gains speed.

When my BMW i3 is stopped

If your BMW i3 makes a loud noise while not accelerating, engine on, the problem may be related to poor air intake. An air intake hose that has come loose or has a hole in it may be the reason.

Where does loud noise come from on my BMW i3 and how can I be sure of its origin?

Now that we have located the source of the noise, we will concentrate on the verification step to ensure that this is the concern you are going through.

  • The loud noise comes from the wheels of my BMW i3

    As we have seen previously, loud noise from the wheels of your BMW i3 may be related to two main trouble. If it is one of your tired bearings, it will tend to make a thumping noise that intensifies when it is under stress (spins faster and faster). So bear in mind to check by driving “fast” (neutral gear on and window open to hear only the noise of the wheels) that the noise is located here, if this is the case replace it or them right away. If it is a deformed tire, don’t forget to visually check the entire tread area for linearity. If it is the balancing of the wheels of your BMW i3 that is the issue, you will tend to feel a vibration in the direction of the car as you go faster. In both circumstances, you will have to go to your auto mechanic to change the tires or perform a balancing.

  • The loud noise comes from the engine of my BMW i3

    In case you have discovered loud noise as coming from the engine of your BMW i3, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected with a compression loss during the engine ramp-up phase, so you should encounter a power loss during your acceleration. If the loud noise on your BMW i3 is related to air intake, the control will be done mainly visually, check all your air intake hoses by a visual control in your engine block to be sure that it is not damaged or disconnected which would generate an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then check that the engine idle speed is not random. In case you confirm one of these two trouble, take your car to your service garage .

  • Loud noise comes from the exhaust pipe of the vehicle

    If the noise you have found comes from the exhaust pipe of your BMW i3, it is highly plausible that you have rust if your vehicle is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your BMW i3, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To confirm this, get help from someone who will stand under the vehicle while you accelerate to find the exact area of origin of this noise. If it is a hole, you can repair it with a putty provided for this purpose, or, if it is a collar, “reattach” it. If it is cut or the hole is too big, it is better to get closer to your mechanic.