If there is one thing that is guaranteed to be broken on almost every single BMW E46 out there, it has got to be the windshield cowl. This is the rubber molding that sits at the base of the windshield. This rubber molding will get brittle from sun exposure over time and will eventually crack and break apart. If your E46 doesn’t have this problem, it has either been replaced recently, or it is only a matter of time before it happens.

The BMW E46 utilizes a coil-over configuration, with each ignition coil matched to one spark plug. In total, that comes out to (6 qty) ignition coils and (6 qty) spark plugs on this inline six engine. I’ve written this DIY tutorial to replacing the spark plugs for the E46, which will cover all 323i, 325i, 328i, and 330i models.

When I purchased my second-hand BMW 330XI, I found that both of the mid-range speaker trim on the front doors were broken. From my research online, it doesn’t appear to be a very common issue, but I wanted to share my experience on how to replace these in case someone else has the same problem on their BMW E46.

There will be times when you may be required to remove your door panel on your BMW E46. Some common reasons for doing so are to replace the speakers, change out the speaker trim, and to gain access to the tweeter and power mirrors. It’s not very difficult to remove the door panels of the E46, but it does help to know exactly what you need to do to separate the door panel from the door.

The cabin air filter is replaced during BMW’s Inspection Service 1, which occurs every 30,000 miles. The cabin filter is extremely easy to replace and changing it out might take you just a few minutes to do.

The BMW E46 (3-series models) are well known to leak fluids due to parts that tend to fail over time. When we talk about power steering fluid, it can commonly leak where the power steering fluid reservoir resides. In the engine bay, you may notice power steering fluid leaking at the reservoir or at the hoses connected to it. I’ve personally experienced this myself, as have many other E46 owners. On this post, I wanted to run through the process of identifying and replacing some common sources of power steering fluid leaks.

One of the easiest jobs you can do on your BMW E46 3-Series is to replace the engine air filter. There are a whole host of benefits to replacing the engine air filter such as improved fuel efficiency, reduced emissions, and prolonged engine life.

A very common issue on the BMW E46 is that the volume knob on the factory radio ends up breaking, so that you can no longer press the button to turn it on or off. It doesn’t matter which model E46 you have: 323i, 325i, 328i, or 330i (convertible/sedan/coupe), all of these vehicles use a similar BMW Business CD radio unit.

Changing the oil and oil filter on your BMW E46 may be one of the most important maintenance items you can do on your car. This guide applies to all M52 and M54 engines, which can be found in the BMW 323i, 325i, 328i, and 330i coupes, sedans, wagons, and convertibles.