All generations of the BMW X3 are reasonably well put together, but some have had problems over the years–from faulty water pumps and engine issues to an overly stiff suspension that reportedly causes nausea.
Key Points
- First-generation X3s struggled with cooling system issues, a stiff ride, and various electrical issues. The second-gen. also struggles with cooling system issues, as well as a problematic VANOS system
- Third-generation BMW X3s had issues with coolant leaks, gasket failure, and a start-stop system that can be a bit jarring. Hybrid X3s from this generation also struggled with charging problems.
- Overall all years of the BMW X3 are well-built, but some tend to have more issues than others. Your best bet is to get a pre-purchase inspection before signing on the dotted line.
First-generation BMW X3: Cooling System Problems, a Stiff Ride & Various Electrical Issues
The first-generation BMW X3 (2004-2010) debuted with two versions of the same inline-six-cylinder engine, the M54, which was available as either a 2.5-liter or 3.0-liter. It also came with a few issues, with the most common affecting the cooling system, with thermostats, water pumps, and expansion tanks noted as constant failure points on these engines. Neglecting to change out most components before 100,000 miles can result in catastrophic engine failure. Another failure point is the DISA Valve, which is responsible for adjusting airflow. Thankfully, on the X3, this is easy to self-diagnose and repair.
Two other common issues can be smartly repaired at the same time. A common problem for most BMW X3s regardless of year is the Vanos system, which is BMW’s variable valve-timing technology. On the M54, various sensors and seals fail quite commonly. Lastly, the M54 is notorious for failing valve covers, which can lead to misfires and oil smells in the cabin. It’s recommended that both the Vanos and valve cover be maintained simultaneously.
For the 2007 model year, the BMW X3 received a replacement inline-six. Borrowed from the then-new 3 Series, the N52 engine returned better performance and fuel economy than the outgoing M52. Unfortunately, it shares many of the M54’s weak points. The N52 is well known for needing complete cooling system overhauls and is plagued by similar VANOS and valve cover gasket problems. New to the N52 is a common rough idle issue, which may or may not be VANOS-related. Usually changing the spark plugs and ignition coils will fix this.
There are some issues outside of the engine that can be worrying about the first-generation X3. Early production X3s will usually experience a problem with the transfer case, which can be costly to replace. Fit and finish issues will also pop up, such as rattling sunroofs, and electrical gremlins will be sure to show up, such as the false passenger airbag light. Window regulators are also occasional nuisances.
Car and Driver reported on the overly stiff suspension, mentioning that it even caused nausea in some test drivers. A few reviewers also wished for a little more trunk space.
Second-generation BMW X3: Faulty Timing Chains, Problematic EGR Systems & a Cracking Charge Pipe
The second-generation BMW X3 arrived in 2011, ran until 2017, and featured the familiar N52 engine. Eventually, this was replaced by the N20 engine; a turbocharged straight-four cylinder. The most catastrophic problem plaguing this engine is the timing chain. Timing chain aside, the N20 experiences many of the same failure points as its predecessors. Gaskets, spark plugs, and cooling components are the most frequent weaknesses.
New for the second-generation X3 is the availability of diesel engines, a choice of two. The entry-level N47 four-cylinder, and the more powerful straight-six N57. The N47 is a bit of a maintenance nightmare. Just like the N20 timing chain failure is an omnipresent threat. Not uncommon for both diesel variants is EGR system failure, which recirculates exhaust gases into the intake.
Finally, DPF filters can fail during shorter journeys. This failure can allow soot to build up on important components like the turbocharger and glow plugs. The N57 suffers many of the same problems, but without as much fear for the timing chain. It’s also a popular platform for modifications, so be sure to inspect carefully before buying.
Also, the second-generation BMW X3 is also available with the N55 turbocharged six-cylinder. The N55 is a very popular choice for modifications and is favored by enthusiasts for its snappy response and wide powerband. However, it is not without its share of problems. One of the most common is the charge pipe. It is known to crack with age and will reduce engine power significantly when it fails. Many other common BMW issues persist on the N55. Chiefly, VANOS problems and cooling system failures. The VANOS system was even subject to a recall back in 2014, affecting nearly half a million cars. Little things, like vacuum lines and sensors, will also be common annoyances.
The second-generation BMW X3 is also noted as having some electrical system problems. Like the previous generation, there are also some complaints about the sunroof rattling.
Motor Trend noted that the optional heads-up display was sometimes hard to read, and had some general complaints regarding the quality of the fit and finish in the cabin, like creaky HVAC controls.
Third-generation BMW X3: Coolant Leaks, Gasket Failures & a Faulty VANOS Solenoid
The third-generation BMW X3 (2018-present) received some minor updates in 2021. There are three different models available with two different engines. In the base trim, you have the B48 turbocharged four-cylinder. You can also find this engine in the “30e” trims. The B48 four-cylinder has so far proven to be a stout engine. Some common problems surface, such as coolant leaks and gasket failures, but due to the overbuilt nature of this engine, it’s quite reliable.
The X3 xDr30e also uses the B48 engine but is a plug-in hybrid. It’s helped by an additional 12-kWh battery that runs in conjunction with the engine to provide additional power and efficiency. It’s also the same powertrain that has powered the 330e. This adds complexity, and therefore some unique problems can arise. Some owners have already noted sensor and module failures. Others have had issues with charging, and even the car’s central computer.
An optional engine for the third generation X3 is the B58 inline-six. Also turbocharged, its design is heavily based on the previous generation N55 engine. Though the B58 has proven to be more reliable than the N55, similar problems exist. Most noted are coolant and oil loss, failing gaskets, and VANOS solenoid failure. Like the N55, the B58 is frequently modified and should be thoroughly inspected before making a purchase.
Since the third-generation X3 is still somewhat new to the market, there haven’t been many well-documented issues outside of the engine.
The Car Connection has observed that the start-stop system is a little bit jarring; luckily, this can be disabled. They also had complaints about the iDrive interface, finding it difficult to navigate.
Is the BMW X3 a Good SUV to Buy?
Yes, but you need to buy the right one. Thanks to its popularity, the most common X3 problems have been identified and fixes are widely available. All generations of the X3 are reasonably well put together, and the biggest issues are engine specific.
It’s important to ensure you pick the engine that best suits your needs. If you don’t need the added complexity and power of the N55, for example, it would be best to avoid it. A reasonably inexpensive pre-purchase inspection is a great way to ensure a safe buy.
Photos: BMW
