The 2011 BMW 328xi represents the all-wheel drive (AWD) variant of BMW’s popular E90-generation 3 Series sedan. Known for its engaging driving dynamics and solid German engineering, this model is often viewed as one of BMW’s more dependable offerings from the early 2010s. But how reliable is the 2011 BMW 328xi really? In this guide, we’ll examine the most common reliability issues, long-term maintenance costs, and what to expect if you own—or are considering buying—one.
Is the 2011 BMW 328xi Reliable?
Yes, the 2011 BMW 328xi is generally reliable, especially compared to turbocharged BMW models from the same era. It uses the naturally aspirated N52 3.0L inline-six engine, which is widely regarded as one of BMW’s most dependable modern powerplants. The addition of BMW’s xDrive AWD system improves traction but also adds complexity and cost to long-term maintenance.
With regular maintenance and attention to known weak points, many 328xi models can exceed 200,000 miles.
Most Common 2011 BMW 328xi Reliability Issues
1. Valve Cover Gasket Leak
The valve cover gasket on the N52 engine is known to leak with age and heat exposure. This is one of the most commonly reported issues and often leads to oil smells, light smoke, or minor misfires.
- Symptoms: Burning oil smell, visible leak near top of engine
- Repair Cost: $400–$700
2. Oil Filter Housing Gasket Leak
This gasket often fails, leaking oil onto the serpentine belt and other critical components. Left unresolved, it can lead to belt degradation or even engine failure if the belt is sucked into the crankshaft.
- Symptoms: Oil near alternator or belts, visible leaks
- Repair Cost: $300–$500
3. Electric Water Pump Failure
The electric water pump in the 328xi is prone to failure around 80,000–100,000 miles. Sudden overheating is common and can lead to engine damage if not addressed quickly.
- Symptoms: Overheating, check engine light, coolant warnings
- Repair Cost: $900–$1,300 (includes thermostat)
4. AWD xDrive System Maintenance
The xDrive system requires maintenance of the transfer case, front/rear differentials, and CV axles. Over time, fluid changes and possible actuator issues may arise, especially on high-mileage cars.
- Symptoms: Clicking noises, drivetrain warning lights, uneven tire wear
- Repair Cost: Transfer case fluid change: $150–$300; Actuator repair: $400–$800
5. VANOS Solenoid Issues
The variable valve timing system (VANOS) may suffer from solenoid contamination or failure, leading to sluggish performance or fault codes.
- Symptoms: Engine hesitation, poor throttle response, fault codes
- Repair Cost: $150–$500 depending on cleaning or replacement
6. Battery Drain and IBS Sensor Failure
Electrical drain issues are not uncommon, especially due to a faulty Intelligent Battery Sensor (IBS). The car may fail to start after sitting or report low voltage even with a new battery.
- Symptoms: Slow crank, dead battery, electronic glitches
- Repair Cost: IBS replacement: $200–$350; Battery: $250–$400
Maintenance Costs and Service Intervals
To keep the 2011 328xi running smoothly, regular preventative maintenance is key. Here’s a look at average service costs and suggested intervals:
| Service | Interval | Cost |
|---|---|---|
| Oil Change | Every 5,000–7,000 miles | $100–$150 |
| Transmission Fluid | Every 60,000 miles | $300–$500 |
| Coolant System Overhaul | Every 80,000–100,000 miles | $1,000–$1,300 |
| Valve Cover Gasket | As needed | $400–$700 |
| Transfer Case Fluid | Every 50,000 miles | $150–$250 |
| Differential Fluids | Every 50,000–60,000 miles | $200–$400 |
Interior and Body Durability
The E90 platform, including the 328xi, is known for decent build quality, though interior plastics and buttons can wear over time. Seat wear, center console fading, and minor rattles may develop in higher-mileage cars.
Notable Durability Points:
- Soft-touch surfaces can peel or fade
- Sunroof issues (rattling or jamming)
- Window regulators may fail, especially rear units
Pros and Cons of the 2011 BMW 328xi
| Pros | Cons |
|---|---|
| Excellent AWD traction | Higher maintenance cost than non-AWD models |
| Reliable N52 engine | Electric water pump prone to failure |
| Comfortable and sporty ride | Oil and gasket leaks common |
| Better winter handling vs 328i | Transfer case needs regular service |
Who Should Consider the 2011 BMW 328xi?
The 328xi is ideal for drivers who want the experience of a rear-wheel-biased BMW sedan with the added confidence of all-wheel drive for year-round driving. It’s especially suited for buyers in snowy or mountainous climates. That said, it’s best for owners who are either willing to DIY or have access to a BMW-savvy mechanic and can budget for routine service.
Final Thoughts
The 2011 BMW 328xi strikes a strong balance between performance, comfort, and winter capability, and it remains one of the most reliable E90 variants available. While it’s not maintenance-free, its issues are well-documented and manageable—especially when caught early. With a solid service history and regular care, this car can offer a rewarding and long-lasting ownership experience.
Tip: Always verify that key services like water pump replacement, gasket repairs, and transfer case fluid changes have been done before purchasing a used 328xi. Doing so can save you thousands down the road.