BMW 3 Series E90


The BMW E90, representing the fifth generation of the BMW 3 Series, is widely recognized for its balance of luxury and performance. Produced between 2005 and 2013, this model came in sedan (E90), wagon (E91), coupe (E92), and convertible (E93) variants. Here's a short review of the BMW E90:

**Performance and Handling:**
The E90 is celebrated for its dynamic driving experience. It offers a range of engines, from efficient four-cylinder models to more powerful six-cylinder versions. The top-of-the-line 335i, equipped with a twin-turbo six-cylinder engine, is particularly praised for its brisk acceleration and smooth power delivery. The E90 also features precise steering and a well-tuned suspension, providing a balance between sporty handling and ride comfort.

**Interior and Features:**
Inside, the E90 offers a refined and driver-oriented cabin. The build quality is solid, with high-grade materials and a thoughtful layout. It might not be as modern as its successors in terms of technology and infotainment systems, but it generally meets the expectations for its era. The iDrive system, which controls many of the car's functions, received mixed reviews, especially in earlier models, for its complexity.

**Reliability and Maintenance:**
While the E90 is known for its build quality and engineering, it's not without its maintenance needs. Common issues include wear on the water pump and thermostat, issues with the fuel pump in early 335i models, and the need for regular maintenance on the high-precision direct injection system. Prospective owners should be mindful of these issues and consider a pre-purchase inspection to ensure the vehicle's condition.

The E90's exterior design is a blend of classic BMW styling cues and a modern aesthetic. It's more angular and aggressive than its predecessor, the E46, reflecting a natural evolution in BMW's design language. The interior is functional and well-crafted, though some find it less adventurous than the exteriors.

Overall, the BMW E90 is a well-regarded vehicle in the used car market, offering a great mix of performance, comfort, and a touch of luxury. Its driving dynamics are especially appreciated by enthusiasts, while its range of models and configurations make it a versatile choice for different needs and preferences.


The BMW E90, while known for its performance and driving dynamics, has a mixed reputation when it comes to reliability. It's a complex vehicle with high-end engineering, which can lead to higher maintenance costs and the need for attentive care. Here's a breakdown of the reliability aspects of the BMW E90:

### Common Issues:
1. **Electric Water Pump and Thermostat Failure:**
- The electric water pump is a known weak point and is prone to failure, potentially leading to overheating if not addressed promptly. Regularly monitoring and timely replacement are recommended.

2. **Oil Leaks:**
- Common areas for oil leaks include valve cover gaskets, oil filter housing gaskets, and oil pan gaskets. It's important to fix these leaks early to prevent further engine damage.

3. **Fuel Pump Issues (especially in early 335i models):**
- The high-pressure fuel pump (HPFP) in some of the early N54 engine models (commonly found in the 335i) has been known to fail. BMW extended the warranty for the HPFP in certain models due to the high failure rate.

4. **Battery and Charging System:**
- The E90 uses an intelligent battery management system that requires registration and proper programming when replacing the battery. Failure to do so can lead to electrical issues and shortened battery life.

5. **Cooling System:**
- Besides the water pump and thermostat, other components of the cooling system, like hoses and radiator, can wear out and may need attention.

6. **Window Regulators:**
- Window regulators in the E90 are known to fail, leading to windows that won't roll up or down.

### Maintenance Tips:
1. **Regular Inspection:**
- Regular inspections by a mechanic familiar with BMWs can help catch issues before they become serious.

2. **Timely Oil Changes:**
- Using the correct oil and adhering to a regular oil change schedule is crucial to maintain engine health.

3. **Attention to Warning Lights and Messages:**
- Addressing warning lights and messages promptly can prevent minor issues from becoming major problems.

4. **Preventive Maintenance:**
- Replacing wear items before they fail, such as the water pump and thermostat, can save time and money in the long run.

In summary, the BMW E90 can be a reliable vehicle if properly maintained and cared for. However, potential owners should be prepared for the possibility of higher maintenance costs compared to less complex vehicles. It's advisable to have a thorough pre-purchase inspection by a qualified mechanic and to review the vehicle's maintenance history to ensure that it has been well-maintained.

Best Engine

The BMW E90 series offered a range of engines, each with its own set of strengths, and the "best" engine can depend on your criteria, such as performance, reliability, or fuel efficiency. However, a few engines stand out for their balance of performance and overall desirability:

1. **N52 (Inline-6, Naturally Aspirated):**
- Found in models like the 328i, this engine is known for its smooth power delivery and relative simplicity compared to turbocharged variants. It's regarded as one of BMW's most reliable engines, offering a good balance of performance and efficiency without the complexity of turbochargers.

2. **N54 (Inline-6, Twin Turbocharged):**
- Featured in the 335i, the N54 is celebrated for its high performance and tuning potential. It's known for delivering a powerful and exhilarating driving experience. However, it does come with some reliability concerns, such as issues with the high-pressure fuel pump, turbochargers, and the cooling system. For enthusiasts looking for performance and willing to maintain it meticulously, the N54 can be a rewarding choice.

3. **N55 (Inline-6, Single Turbocharged):**
- Successor to the N54 and also used in the 335i (later models), the N55 is known for being more reliable while still providing robust performance. It uses a single twin-scroll turbocharger and is generally considered to offer a good balance between the high performance of the N54 and the reliability of the N52.

4. **M3's S65 (V8, Naturally Aspirated):**
- If you're considering the high-performance M3 variant of the E90, the S65 engine is a masterpiece. It's a high-revving V8 that offers an exceptional driving experience and performance. However, it's in a different category in terms of price and maintenance compared to the regular 3 Series models.

When choosing the "best" engine, consider your priorities. If you prioritize reliability and lower running costs, the N52 might be your best bet. If you're looking for high performance and are willing to deal with potentially higher maintenance, the N54 or N55 could be more suitable. And if you're looking for a high-performance sports sedan and are okay with the associated costs, the M3 with the S65 engine is an iconic choice. Always ensure to check the service history and possibly get a pre-purchase inspection, especially for the higher-performance models.


The BMW E90, part of the 3 Series, was produced from 2005 to 2013 and offered a wide range of models with varying specifications. Below are general specifications for the E90, covering several common models within the lineup. Please note that specific figures can vary based on the exact model, year, and market:

### Dimensions:
- **Length:** Approx. 4,520 - 4,610 mm (depending on the model)
- **Width:** Approx. 1,780 mm
- **Height:** Approx. 1,420 mm
- **Wheelbase:** Approx. 2,760 mm

### Engine Options:
1. **318i**
- Engine: 2.0L inline-4
- Power: Approx. 129 hp
- Torque: Approx. 180 Nm

2. **320i**
- Engine: 2.0L inline-4
- Power: Approx. 150 hp
- Torque: Approx. 200 Nm

3. **325i**
- Engine: 2.5L inline-6 (N52)
- Power: Approx. 215 hp
- Torque: Approx. 250 Nm

4. **330i**
- Engine: 3.0L inline-6 (N52)
- Power: Approx. 255 hp
- Torque: Approx. 300 Nm

5. **335i**
- Engine: 3.0L twin-turbo inline-6 (N54, later N55)
- Power: Approx. 300 hp
- Torque: Approx. 400 Nm

6. **M3**
- Engine: 4.0L V8 (S65)
- Power: Approx. 414 hp
- Torque: Approx. 400 Nm

### Transmission Options:
- 6-speed manual
- 6-speed automatic
- 7-speed dual-clutch transmission (DCT) available in later 335i models and M3

### Performance:
- **0-60 mph (0-100 km/h):** Ranges from around 6 seconds (e.g., 330i) to under 5 seconds (e.g., 335i, M3)
- **Top speed:** Typically electronically limited to 155 mph (250 km/h), though this can vary

### Features (vary by model and year):
- iDrive system (with varying functionality based on year and trim)
- Luxury options such as leather upholstery, high-end audio systems, and advanced navigation systems
- Safety features including multiple airbags, stability control, and ABS brakes

These are generalized specifications, and the exact features and options can vary significantly between different models, trims, and years. It's essential to check the specific details of the vehicle you are interested in.