Understanding the BMW B58 Engine: Common Problems and Maintenance Tips

The BMW B58 engine has become a notable player in the modern automotive world, especially among those who appreciate performance coupled with reliability. Since its introduction in 2015, this engine has been widely recognized in tuning circles and by everyday drivers. In this article, we delve into the B58’s evolution, its common issues, and essential maintenance tips, tailored to the offerings at Engine Finder, your go-to source for used BMW engines for sale from a network of scrap yards and engine importers in South Africa.

Key Takeaways

Key Points Details
VANOS Solenoid Issues Commonly affected by o-ring failure, leading to power loss and rough idle. Recommended replacement every 80,000 km.
Valve Cover Gasket Leaks Prone to failure between 96,500-160,000 km, leading to oil leaks and potential engine damage.
Oil Filter Disintegration Filters may break down over time, necessitating adherence to recommended oil and filter change intervals.
Excess Coolant Consumption Some B58 engines experience higher coolant usage, requiring frequent monitoring and top-offs.
B58 Engine in Toyota Supra The B58 is used in the Toyota Supra (A90), illustrating its versatility and performance capabilities.
B58 Engine Reliability Known for its robustness and reliability, with proper maintenance, it compares favorably to competitors.
Maintenance Recommendations Regular maintenance, including system checks and timely replacements, is crucial for engine longevity.
BMW Models Featuring B58 Found in various models like BMW 340i, 440i, M340i, X4 M40i, and the Toyota Supra (A90 generation).

The Evolution of the B58 Engine

Original B58 vs. B58TU1

First seen in the 2016 340i, the B58 quickly gained a reputation for its tuning potential and robust reliability. However, not all B58s are the same. The most significant revision came with the 2019 introduction of the B58TU1. This update, with a focus on emissions and fuel economy, brought several changes.

Aspect Original B58 B58TU1
Timing Chain Standard Design Improved Design
Fuel System Initial Configuration Enhanced Configuration
Cylinder Heads First Generation Revised Generation
Power Output Standard Slightly Higher
Emissions Focus Moderate EU Emissions Standards

The B58TU1’s modifications aim to extend the engine’s life and efficiency, though its long-term reliability is still under observation.

Common Problems with the B58 Engine

VANOS Solenoid

VANOS plays a critical role in the B58’s performance. It adjusts valve timing based on oil pressure, controlled by a solenoid, which is known to have issues.

  • Common Failures: The solenoid’s o-ring is susceptible to degradation from heat and wear.
  • Symptoms: Power loss, slow throttle response, and uneven idle.
  • Preventive Measures: BMW advises replacing VANOS seals every 80,000 kilometers.

Valve Cover Gasket

The valve cover gasket (VCG) is a frequent concern in BMW engines, including the B58. Made of rubber, it wears out over time, leading to oil leaks.

  • Failure Mileage: Typically between 96,500-160,000 kilometers.
  • Symptoms: Oil smell, oil-soaked spark plugs, and visible oil leakage.
  • B58 Improvement: An advanced heat retention system minimizes temperature fluctuations.

Oil Filter Disintegration

The B58’s oil filter can break down over time, posing a risk to the engine’s cleanliness.

  • Issue Description: Filter degradation, allowing contaminants into the engine.
  • Preventive Tip: Adhere to BMW’s recommended oil and filter change intervals in kilometers.

Excess Coolant Consumption

Some B58 engines exhibit higher-than-normal coolant consumption. This issue is not always indicative of a serious problem but requires monitoring.

  • Potential Causes: Defective coolant tank caps or seal problems.
  • Maintenance Advice: Frequently check coolant levels and inspect for visible leaks.

Maintenance Recommendations for the B58

Regular maintenance is key to ensuring the longevity and performance of the BMW B58 engine. Here are some essential maintenance tips for B58 owners, especially relevant if you’re sourcing your engine from Engine Finder’s network of scrap yards and engine importers in South Africa.

VANOS System Care

  • Replacement Interval: Change VANOS seals every 80,000 kilometers.
  • Complete System Check: A full system replacement or thorough check is advisable at about 112,000 kilometers.

Valve Cover Gasket Monitoring

  • Inspection Frequency: Regular checks are recommended after 96,500 kilometers.
  • Signs of Wear: Watch for oil leaks, a burning oil smell, and inspect spark plug conditions.

Oil Filter Maintenance

  • Change Interval: Follow BMW’s recommended oil and filter change schedule, translated into kilometers.
  • Regular Checks: Inspect the filter’s condition during oil changes for early wear signs.

Coolant Level Monitoring

  • Regular Inspection: Frequently check the coolant levels.
  • Leak Checks: Look for visible leaks around the coolant tank and engine.

Is the B58 a Reliable Engine?

The B58, while having its share of issues, is recognized as a highly reliable powertrain. Its balance of performance and durability, even in comparison with its predecessors and contemporaries, is impressive. Here’s a quick look at its reliability:

  • Tuning Potential: Outstanding, with many enhancing performance without significant reliability issues.
  • Common Issues: Manageable with regular maintenance, and well-documented for ease of troubleshooting.
  • Longevity: Proper care can ensure the B58 engine exceeds the high-mileage thresholds BMW engines are known for.

Conclusion: Are B58 Engines Worth the Trouble?

Considering its capabilities and overall reliability, the BMW B58 engine represents a valuable choice for enthusiasts and regular drivers. Though no BMW engine is without its quirks, the B58’s issues are manageable and preventable with proactive maintenance.

Find a quality used B58 engine for sale from Engine Finder

At Engine Finder, we understand the intricacies of European motors, including the BMW B58. Our network in South Africa is ready to provide high-quality used B58 engines and expert advice on maintenance.

  • Expertise: Our network includes professionals experienced in B58-specific issues and maintenance.
  • Quality Engines: We offer high-quality used B58 engines sourced from reputable scrap yards and importers.
  • Customer Support: Contact Engine Finder for personalized service recommendations and to find the best B58 engine for your needs.

Ensure your B58’s performance and longevity by choosing Engine Finder for your BMW engine needs in South Africa.


What are the weak points of the B58?

The B58 engine’s known weak points include the VANOS solenoid, prone to o-ring failure; the valve cover gasket, which may leak oil; oil filter disintegration; and excess coolant consumption. Regular maintenance can mitigate these issues.

Is the 2JZ better than the B58?

Comparing the 2JZ and B58 depends on specific criteria. The 2JZ, known for its durability and tuning potential, is a legendary engine in the tuning community. The B58 is newer, with advanced technology and better fuel efficiency. Both have strong tuning potentials, but the 2JZ has a more established legacy.

How strong is the B58?

The B58 is a robust and reliable engine. It offers high power output, advanced technology, and is well-regarded for its tuning capabilities. Its internal components are designed to withstand high stress, making it a strong choice for both daily driving and performance tuning.

Is the B58 in the Toyota Supra?

Yes, the B58 engine is used in the Toyota Supra (A90 generation). It’s a testament to the engine’s performance and reliability that Toyota chose it for their iconic sports car.

Do B58 engines burn oil?

B58 engines can experience oil consumption, but it’s not a widespread issue. Any oil burning is usually within normal ranges. Regular monitoring and maintenance can help identify and address any excessive oil consumption.

What cars have the BMW B58 engine?

The BMW B58 engine is found in several models, including:

  • BMW 340i
  • BMW 440i
  • BMW M340i
  • BMW X4 M40i
  • Toyota Supra (A90 generation)

This engine’s versatility and performance make it a popular choice across various vehicle types and brands.

Sources of info:

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Drawing from extensive expertise in the used car parts industry, Craig Sandeman has established himself as a trusted authority in automotive repair. He possesses a deep knowledge of the challenges encountered by individuals seeking reliable car parts, making him a highly sought-after expert in this field.


Potential issues, causes, and solutions have been identified in the above article based on the experiences of car owners and repairers, as well as web materials such as forum blogs and technical support bulletins. This data is supplied exclusively for the purpose of reference. Only appropriately qualified persons should perform repairs and/or changes on your vehicles.

While it’s important to keep in mind, it’s also important to note that the amount of times anything is mentioned here should not be seen as a sign of its reliability or frequency. Various owners, driving in different ways, and caring for their vehicles in distinct ways will cause two identical vehicles to perform differently.

As previously said, this material is supplied primarily for reference reasons; nonetheless, we hope that by doing so, we will be able to supply you with essential knowledge that will allow you to make informed decisions whenever you encounter any of the aforementioned setbacks.

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