Common problems with BMW 330i

BMW 330i

The BMW 330i is one of the most outstanding cars in its class. This is because it looks lovely and comes with a powerful engine. It is also comfortable, fuel-efficient, and with a smooth ride. Nonetheless, it also has multiple issues. But what are the common problems with BMW 330i? 

Common problems with BMW 330i are oil leaks, exhaust rattle, failing blower final stage fan resistor, coolant loss, and power steering problems. In addition, other owners have reported experiencing failing front control arm bracket bushings, engine overheating, electrical problems, failing water pump, and suspension issues.

What are the common problems with BMW 330i?

Oil leaks

If you own a BMW, this is one of the problems that you should expect. Many BMW 330i users have complained about a burning oil smell or oil below their car. This problem normally happens after the car has several miles. The main culprit is usually a bad valve cover gasket. So, replacing this part will automatically fix the problem.

Failing blower final stage fan resistor

The work of the blower fan is to blow any forced air. So, if the blower final stage fan resistor is failing or damaged, it won’t work as intended. Note that this problem is normally caused by corrosion, overheating, or a faulty blower motor. Hence, if you want to fix this issue, you will have to detect the underlying problem and fix it.

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Exhaust rattle

This problem normally happens when the car starts up cold. Affected owners have stated that the sounds are as high as a high-pitched vibration noise that is emanating from the center of the exhaust system. On the contrary, things tend to go back to normal when the car warms up. 

Coolant loss

Coolant loss in the BMW 330i is normally caused by a leak from the expansion tank. Note that leakages in expansion tanks are usually caused by debris or sediments inside the tank. Besides, it can also be caused by a worn-out sealing gasket between the tank and the radiator.

So, if you want to fix this problem, you should replace the seal and get rid of the sediments or replace the expansion tank.   

Failing front control arm bracket bushings

The work of the front control arm bracket bushings is to cushion the suspension system which in turn controls noise and vibrations, and also provides a softer ride over bumps. Nonetheless, after some time, the front control arm bracket bushings wear out and becomes less effective. If this happens, you will have to replace them.

Power steering problems

Power steering problems in this car are typically caused by multiple power steering hoses failing. The hoses can fail because of wear and tear or high temperature. Regardless of the reason, it is vital to replace them in time and avoid further issues.

Failing water pump

Most BMW 333i parts are made of plastic and the water pump is one of them. As a result, the water pump may fail due to wear and tear or damage. When the water pump is bad, the engine will overheat. Hence, it is crucial to replace a failing or damaged water pump to avoid putting pressure on the engine.

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Engine overheating

As stated above, one of the things that cause the engine to overheat is a faulty water pump. Other issues include radiator problems, cooling systems leaks, or even blocked hoses. So, if you’re having an overheating engine, it is vital to have it diagnosed before being fixed.

Electrical issues

Like most of its siblings, the BMW 330i also faces lots of electrical problems. However, the most common electrical issues are problems with the iDrive system, audio-related problems, and bass cut-off with cars equipped with the Harman Kardon sounds system.

To fix electrical issues, you may have to check the wiring, fuse, alternator, and even battery. 

Suspension problems

Even though suspension problems are not very common with the BMW 330i, several users have reported some issues. Most users stated that they had a clunking noise, while others stated that the rear suspension springs had issues. Regardless of the suspension problem, fixing this issue is not as cumbersome as transmission problems.

Therefore, you should have your car diagnosed and fixed by a professional BMW technician.


Is the BMW 330i reliable?

If reliability is what you’re looking for in a luxury car, then the BMW 330i is a nice car to have. Most reliability agencies have awarded the BMW 330i with an above-average reliability rating. However, most of its competitors are more reliable, but the most recent models perform way better in this area.

How long does the BMW 330i last?

The BMW 330i is well-built and durable. So, if it is well-maintained and cared for, this car can last for more than 200k miles. Nevertheless, several users have noted clocking more than 250,000 miles, which is very impressive for such a luxury car.

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What is the best year for the BMW 330i?

BMW 330i has been in the market for a while now. Over the years, BMW has been able to come up with some amazing models that have wowed BMW lovers. However, the most outstanding BMW 330i model year is the 2005 model. Referred to as the E90, this is one of the best-performing and most reliable BMW models on the market.

Is it expensive to maintain the BMW 330i?

Yes, it is expensive to maintain the BMW 330i. On average, the user should be ready to spend at least $800 annually to maintain this car. This is more than the industry average for luxury cars by at least $50. On top of that, the cost of spare parts is the highest on the market.

What is the difference between the BMW 320i and 330i?

The main difference between the BMW 320i and the BMW 330i is that the 330i is more powerful but less efficient than the 320i. Furthermore, the BMW 320i comes with a traditional meter cluster with analog dials, while the 330i has a prettier digital live cockpit with an instrument cluster.


After looking at some of the common problems with the BMW 330i, it is evident that this car needs proper care and maintenance to last longer. Nonetheless, it is still an exceptional car with amazing technology and comfort. On top of that, it performs exceptionally well and it is pretty reliable.

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Edwin Odipo

Why do you love writing about cars? Cars make our lives easy. You can visit your distant friend, relative or even rush to the grocery store a few miles from your home with a lot of ease. Imagine how life was before the invention of cars?? To me, cars are a blessing that made life more convenient.

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