B58 Engine – All You Need To Know

Do you know what makes a car engine roar to life? If you are a true petrolhead, you would know the importance of an engine in a car. In this post, we are going to dive deep into one of the most powerful engines in the market, the B58 engine.

The B58 engine, BMW’s most advanced and powerful engine yet, has established a prominent reputation for itself in the automotive industry owing to its exceptional performance and cutting-edge engineering.

With an output of more than 380 horsepower and a torque of 369 pound-feet, the B58 engine is designed to leave a lasting impression.

We’ll be exploring the technology behind the B58 engine, its performance, and what sets it apart from other engines in the market. Let’s dive in!

BMW B58 Engine

What is B58 Engine?

The B58 engine is a high-performance, turbocharged, six-cylinder engine designed and manufactured by BMW. It is the latest and most powerful engine in BMW’s lineup, and it has been used in various models, including the BMW 3 Series, 4 Series, 5 Series, 7 Series, X3, X4, X5, and X6.

The B58 engine is a direct successor to BMW’s N55 engine and was first introduced in 2015. It is built on BMW’s new modular engine platform and features a closed-deck design. This enhances its durability and allows it to handle high levels of power and torque.

One of the defining features of the B58 engine is its use of a twin-scroll turbocharger, which improves its performance and responsiveness.

The engine also features a high-pressure fuel injection system, variable valve timing, and variable camshaft control, all of which contribute to its impressive power output and efficiency.

The B58 engine is available in different variants, with power outputs ranging from 335 horsepower to 382 horsepower. It also has a torque output ranging from 369 lb-ft to 369 lb-ft, making it a versatile engine that can power different types of vehicles, from sedans to SUVs.

And if you’re wondering about the B58 reliability, we can confidently tell you that it’s a very reliable and powerful engine that is built to deliver impressive performance and efficiency.

Its innovative design and advanced technology make it a game-changer in the automotive industry and set it apart from other engines in its class.

Brief History of the B58 Engine

The B58 engine is the latest iteration of BMW’s modular engine architecture and is a direct successor to the N55 engine.

The N55 engine was introduced in 2009 and was used in various BMW models, including the 3 Series, 4 Series, and 5 Series. The B58 engine was first introduced in 2015 and has since replaced the N55 engine in most BMW models.

The development of the B58 engine began in the early 2010s, with a focus on improving the performance and efficiency of the N55 engine. BMW engineers designed it with a closed-deck design.

This resulted in an improvement in the vehicle’s overall durability, and an ability to handle higher levels of power and torque. They also incorporated a twin-scroll turbocharger, which improved its responsiveness and reduced turbo lag.

The B58 engine was first introduced in the 2016 BMW 340i and was later used in various other BMW models, including the 440i, 540i, 740i, and X3 M40i. In 2019, BMW introduced an updated version of the B58 engine, which featured improved fuel injection and a higher compression ratio, resulting in a slight increase in power output.

Over the years, the B58 engine has received numerous accolades for its performance and efficiency. It has been praised for its smooth power delivery, impressive acceleration, and overall driving experience.

The B58 engine has also been recognized for its reliability, with many BMW owners reporting trouble-free ownership.

Today, the B58 engine continues to be used in various BMW models and is considered one of the most powerful and advanced engines in its class.

With its innovative design and advanced technology, the B58 engine has solidified BMW’s position as a leader in the automotive industry. You can check how the B58 compares to other BMW engines on our posts on N55 vs B58 and B58 vs S58

Features and Specifications of the B58 Engine

1. Power and Torque

The B58 engine produces a maximum power output of 335 horsepower and 369 lb-ft of torque. This is an increase over the previous generation N55 engine, which produced 320 horsepower and 330 lb-ft of torque.

2. Turbocharging

The B58 engine uses a twin-scroll turbocharger with a variable turbine geometry. This helps to improve throttle response and reduce turbo lag.

3. Direct Injection

The B58 engine uses direct fuel injection, which improves fuel efficiency and reduces emissions.

4. Variable Valve Timing

The B58 engine uses BMW’s Valvetronic variable valve timing system, which helps to improve engine performance and efficiency.

5. Lightweight Design

The B58 engine is designed to be lightweight, with a magnesium engine cover, a lightweight crankshaft, and a hollow camshaft.

6. Cooling System

The B58 engine uses an advanced cooling system, with an electric water pump, a map-controlled coolant thermostat, and a separate oil cooler.

7. Modular Design

The B58 engine is part of BMW’s modular engine family. This means that it shares many components with other engines in the family. This helps to reduce costs and improve efficiency.

8. Compatibility with Hybrid Technology

The B58 engine is designed to be compatible with hybrid technology, which means that it can be used in hybrid or plug-in hybrid vehicles. There’s also the B58 engine tuning capability which offers increased power to the engine.

Which BMW Models Have The B58 Engine?

The B58 engine has been used in a range of BMW vehicles since 2015. It has proven to be a reliable and powerful engine, delivering impressive performance and fuel efficiency. We have listed some of its applications below:

1. BMW 340i and 440i

The B58 engine made its debut in the BMW 340i in 2015. The 340i is a high-performance version of the 3 Series, and the B58 engine helped to deliver impressive performance figures. The engine produces 320 horsepower and 330 lb-ft of torque, which allows the 340i to go from 0-60 mph in just 4.6 seconds.

2. BMW 440i

The B58 engine is also used in the BMW 440i, which is the high-performance version of the 4 Series. The engine produces the same 320 horsepower and 330 lb-ft of torque as the 340i, but the 440i has a sleeker and sportier design.

3. BMW M240i

The B58 engine is used in the BMW M240i, which is a high-performance version of the 2 Series. The engine produces 335 horsepower and 369 lb-ft of torque, which allows the M240i to go from 0-60 mph in just 4.2 seconds.

4. BMW X3 M40i

The B58 engine is used in the BMW X3 M40i, which is the high-performance version of the X3 SUV. The engine produces 355 horsepower and 369 lb-ft of torque, which allows the X3 M40i to go from 0-60 mph in just 4.6 seconds.

Maintenance Tips for the B58 Engine

Just like any high-performance engine, proper maintenance, and care are essential to keep the engine running smoothly and to extend its lifespan. Let’s take a look at some of the key maintenance and care tips for the BMW B58 engine.

1. Follow the Manufacturer’s Maintenance Schedule

The first step in caring for your B58 engine is to follow the manufacturer’s maintenance schedule. BMW provides a detailed maintenance schedule for all of its vehicles, including the B58 engine.

This schedule outlines the recommended service intervals for things like oil changes, air filter replacements, and spark plug changes. Following this schedule can help ensure that your engine is getting the care it needs to perform at its best.

2. Use High-Quality Engine Oil

Using high-quality engine oil is essential for keeping your B58 engine running smoothly. The B58 engine is designed to run on synthetic oil, and BMW recommends using oil that meets the BMW Longlife-01 specification.

This oil provides excellent protection against engine wear and helps keep the engine clean and free of deposits. Be sure to check the oil level regularly and top it up as needed.

3. Keep the Engine Clean

Keeping your engine clean is another essential part of engine maintenance. Dirt and debris can accumulate on the engine and interfere with its performance.

Use a soft cloth or brush to clean the engine bay regularly. Be careful not to get any water or cleaning products on the electrical components. You can also use an engine cleaner specifically designed for use on BMW engines.

4. Check the Coolant Level

The B58 engine uses a liquid coolant to help regulate engine temperature. Checking the coolant level regularly and topping it up as needed is an essential part of engine maintenance.

The coolant should be a bright green color and free of debris. If you notice any discoloration or debris in the coolant, it may be time to have the system flushed and refilled.

5. Check the Air Filter

The air filter helps prevent dirt and debris from entering the engine and can have a significant impact on engine performance. Be sure to check the air filter regularly and replace it if it’s dirty or clogged. A dirty air filter can cause the engine to run rough and reduce fuel efficiency.

B58 Spark Plug Change Interval

Maintaining the B58 engine is crucial to keep it purring like a contented kitten. And one key aspect of engine maintenance is the regular replacement of spark plugs.

These little heroes play a crucial role in igniting the air-fuel mixture, keeping your engine firing on all cylinders. Over time, though, spark plugs wear out, leading to performance hiccups, decreased fuel efficiency, and potential engine troubles.

Understanding the recommended spark plug change interval for this mighty engine is key to keeping it humming along and avoiding potential headaches.

While it’s important to note that the exact change interval can be influenced by factors like driving conditions, fuel quality, and your unique driving habits, BMW provides some general guidelines to point you in the right direction.

According to BMW’s official recommendations, it’s generally a good idea to replace the spark plugs in B58 engines every 60,000 to 80,000 miles, or roughly every 4 to 5 years, whichever comes first.

However, it’s always a smart move to consult your vehicle’s owner’s manual or reach out to a certified BMW dealership for the most accurate and up-to-date information tailored to your specific model.

Neglecting to change your spark plugs within the recommended interval can lead to a host of problems. As those spark plugs wear down, they can cause misfires, a decrease in power output, and even crankiness during engine startups.

In addition, worn-out spark plugs can put a dent in your fuel efficiency, resulting in more frequent gas station visits and an unhappy wallet.

By sticking to the recommended spark plug change interval, you ensure optimal combustion, improved engine efficiency, and overall engine health.

Now, you might be wondering if replacing spark plugs is a task you can tackle yourself. Well, for those seasoned DIY enthusiasts, it can be within reach.

However, if you’re not comfortable or confident in your wrench-wielding abilities, it’s best to leave it to the pros.

Certified BMW technicians or authorized service centers have the know-how and specialized tools to carry out spark plug replacements with precision.

When it’s time to replace those spark plugs in your B58 engine, it’s crucial to use genuine OEM (Original Equipment Manufacturer) spark plugs or high-quality aftermarket alternatives recommended by BMW.

These spark plugs are designed specifically for your engine, ensuring compatibility and optimal performance, just as the engineers intended.

FAQs on B58 Engine

Is B58 Twin Turbo?

Yes! The B58 engine is indeed equipped with a twin-turbocharging system, adding an extra layer of excitement to its already impressive performance.

As part of BMW’s modular engine family, the B58 incorporates a cutting-edge design that includes not just one, but two turbochargers.

Is The B58 Closed Deck?

No, the B58 engine does not have a closed-deck design. It features an open-deck block design.

In an open-deck design, the area surrounding the cylinders has open passages, allowing coolant to flow through for efficient cooling.

This design choice helps manage the high temperatures generated by the engine and aids in maintaining optimal operating conditions.


The b58 engine has undoubtedly set a new standard for power and performance in the world of automotive engineering. Its impressive specifications and advanced technologies have made it a sought-after choice for high-performance vehicles.

However, it’s important to remember that the b58 engine is just one piece of the puzzle when it comes to creating a truly exceptional driving experience.

While the b58 engine may be able to deliver exceptional performance on its own, it’s the collaboration between the engine, transmission, suspension, and other components that ultimately determines the quality of the driving experience.