BMW X3 Common Problems

BMW essentially created the compact luxury SUV segment with the release of the X3 in 2003. They dominated the market until 2008, when the company’s primary competitors, Mercedes-Benz and Audi, entered the segment with the GLK and Q5 respectively. The X3 is, as of summer 2024, about to enter its fourth generation. Throughout its over 20-year run, the X3 has combined the utility and convenience of a small SUV with the prestige, performance, and driving characteristics BMW has built its name around. 

While the X3 is considered one of the best options in the compact luxury SUV segment, it isn’t without issues. Many of the typical problems BMW sedans run into also impact the X3, and we will go over them here. 

BMW X3 Common Problems by Generation

The best way to dig into common X3 problems is by generation since the powertrains vary significantly from the early iterations of the car to the latest model. Many of the issues we will discuss span across multiple generations. This list is not exhaustive but should give you a solid idea of what to expect as an X3 owner.

First Generation X3 (E83) Common Problems

The first X3 was released in 2003 and came with two engine and transmission options. It could be configured with a 2.5 liter inline 6 and 3 liter inline 6, with either a 6-speed manual transmission or a 5-speed automatic. The first-generation X3 was generally reliable, but there are a few things to keep an eye on.

Transmission Leaks

A common transmission fluid leak on the first generation X3 occurs around the selector shaft seal. Transmission fluid is typically a dark red or brown color depending on the age. This leak can sometimes be misdiagnosed as a leaking transmission pan. 

Ignition Coils

Failed ignition coils can cause a check engine on early X3 models. Given the age of these cars, it’s likely the ignition coils have been replaced by more reliable units, but failures are still possible. 

Transmission Limp Mode

Sometimes, the transmission on first-generation X3s can enter what is called “fail-safe mode”. When this happens, a software update or reprogramming will often solve the problem

Electrical Issues

Electrical issues are not uncommon on the first generation X3. An unexpected weak or dead battery can sometimes indicate a faulty body control module. Replacing the failed module with a good condition used part can correct the issue. Make sure you verify the battery itself is not the cause before looking elsewhere though. 

Oil Leaks

Like many BMW engines, the power plants offered in the first generation X3 suffered from oil leaks. Oil filter housings, valve covers, and oil pan gaskets are all common failure points. With some first-generation X3s being 20 years old, it’s important to keep an eye on these problem areas to prevent excess oil loss and potential engine damage. 

Second Generation X3 (F25) Common Problems

Brought to production in 2010, the second generation X3 ran until 2017. It offered a range of engines, including a new turbocharged four-cylinder, a naturally aspirated inline 6 gas, a turbocharged inline 6 gas, and an inline 6 diesel option. The F25 generation received a mid-cycle facelift in 2014, which scrapped the naturally aspirated engine option. From this point forward, all X3 models were turbocharged. 

Timing Chain Failure

The second generation X3 introduced the N20 turbocharged 4-cylinder engine option. Timing chains were a known failure point on this engine. In many cases, this was due to the OEM plastic chain guides wearing down prematurely and allowing the chain to slip.

Sunroof Leaks

A leaking sunroof can be caused by a faulty seal, or debris buildup in the tracks of the sunroof itself. If you notice moisture entering the cabin around the sunroof, get it inspected as soon as possible to prevent water damage.

Camshaft Housing Bolts

Camshaft housing bolt failure is a known issue on many BMW models from 2010-2012, and the X3 is no exception. This issue is caused by a design defect that can cause the bolts holding the VANOS (variable valve timing) housing to come loose, back out, or even break. When this happens, the VANOS system will not function properly, causing a check engine light, loss of power, and rough running. Leaving this problem unaddressed can eventually cause permanent engine damage. 

N55 Engine Problems

The N55 engine was used on the X3 35i. This turbocharged straight six was the top motor in the X3 lineup, but had several common issues. Some of these include:

• Fuel pump failure
• Oil leaks
• Water pump failure

For more information on the N55 engine, check out our article that takes a deep dive into some of these common issues.

3rd Generation X3 (G01) Common Problems

The G01 X3 was released in the United States in 2018 and brought with it new engines, updated interior and exterior, and the high-performance variant, the X3M. It should be noted that diesel engines were no longer offered in the United States on the G01 platform.

Valve Cover Leaks

Valve cover leaks are a common failure across the X3 lineup. When the seal between the cover and cylinder head fails, oil can escape the engine. It’s often a good idea to replace both the gasket and valve cover since the cover is made of plastic and easily warps or gets damaged.

Ignition Coils (again)

Like the previous generation, ignition coil issues continue into the 3rd generation X3. A failed or faulty coil will cause misfires, rough running, and a check engine light since one of the spark plugs will not fire as it should while the engine is running. 

Blower Motor Failure

The blower motor is responsible for moving air into the cabin when you have the air conditioning on. If you are not getting any air coming through the vents, a failed blower motor may be to blame. Luckily, on the 3rd generation X3, this component is relatively easy to reach, making it a job you may be able to tackle yourself if you are mechanically inclined.

Transmission Oil Pan

If you notice fluid leaking under your X3 further back from the engine, a faulty transmission oil pan gasket may be to blame. Like the valve covers, the transmission pan is made of plastic and is prone to failure. It can take some time for these leaks to show since the underside of the car has a plastic cover preventing drips from hitting the ground. 

B58 Engine Issues

The third generation X3 only offers a straight six in the X3 M40i and the X3M. Both variants use the third iteration of BMW’s turbocharged inline-6, the B58, and the higher-output S58. The B58 has a few notable problems including:

• Oil filter disintegration 
• Coolant loss
• Vanos Solenoid Issues

We have a full write-up on the B58 engine here if you want to learn more. 

BMW X3 Service in Salt Lake City

Regardless of what generation your X3 is, you can trust the skilled and experienced technicians at Alex’s Autohaus to handle any service or repair that comes up. Our team knows the ins and outs of BMW vehicles and will help keep your X3 running like it should for years to come. Give us a call or schedule an appointment online today!