The Best Years For Bmw M550 And Some To Avoid

The BMW M550i is a performance sedan that bridges the gap between the standard 5 Series and the full-fledged M5. It offers a compelling blend of luxury, power, and everyday usability. But, like any car, some model years are more desirable than others. This guide provides a detailed look at the best (and worst) years for the M550i, helping you make an informed decision.

BMW M550i Model Years: A Quick Overview

Detailed Explanations

Model Year: This column simply lists the year the M550i was produced. Understanding the specific model year is crucial because BMW often introduces updates and changes from year to year.

Key Features/Changes: This section highlights the significant features and changes introduced in each model year. This includes engine specifications, styling updates (like the Life Cycle Impulse, or LCI), and technological advancements. Knowing these details helps you prioritize the features that are most important to you.

Potential Issues/Concerns: This is arguably the most important column. It outlines potential problems or concerns reported for each model year. This could include engine issues like oil leaks, electrical glitches, or general reliability concerns associated with a new model generation. It's important to remember that these are potential issues, not guarantees. Thorough research and a pre-purchase inspection are always recommended.

The Best Years: Deep Dive

Choosing the "best" year for an M550i depends on your individual priorities and budget. However, based on reliability, performance, and features, here's a breakdown:

2021-2023 (G30 LCI): The Sweet Spot

• Updated Engine: The facelifted (LCI) models from 2021 onwards received a significant power bump, boasting 523 horsepower compared to the pre-LCI's 456 hp. This makes for a noticeable improvement in performance.
• Refreshed Styling: The LCI brought updated front and rear fascias, giving the M550i a more modern and aggressive look.
• Improved Technology: BMW also updated the infotainment system and driver-assistance features in the LCI models, offering a more refined and technologically advanced driving experience.
• Refined Reliability: While the N63 engine has had its share of issues, BMW has continuously worked to improve its reliability. The later G30 models are generally considered to be more reliable than the earlier ones.

Why 2021-2023 are Recommended:

The 2021-2023 M550i models offer the best combination of performance, features, and reliability within the G30 generation. The power bump is significant, the styling is more modern, and the technology is more advanced. While potential issues still exist, they are generally considered to be less prevalent than in the earlier models.

Model Years to Consider with Caution

While the M550i is generally a well-regarded car, some model years require more careful consideration:

2018-2020 (G30 Pre-LCI): Early Adopter Concerns

• Potential Oil Leaks: The N63 engine, while powerful, has a history of oil leaks, particularly in the early model years. This can be a costly issue to repair.
• Early Model Year Quirks: As with any new model, the 2018-2020 M550i models may have some early adopter quirks and issues that were addressed in later years.
• Lower Horsepower: Compared to the LCI models, the pre-LCI M550i has significantly less horsepower (456 hp vs. 523 hp).
• Outdated Technology: The pre-LCI models have an older infotainment system and may lack some of the advanced driver-assistance features found in the later models.

Why Caution is Advised:

While the 2018-2020 M550i models are still capable and luxurious cars, the potential for oil leaks and other early adopter issues makes them a riskier purchase. If you are considering one of these models, it is crucial to have it thoroughly inspected by a qualified mechanic before buying.

2024 (G60): The Unknown Quantity

• New Generation: The 2024 M550i represents a completely new generation (G60). This means a new platform, new styling, new technology, and a new engine with mild-hybrid assistance.
• Unproven Reliability: As with any new model generation, the long-term reliability of the 2024 M550i is unknown. First-year models often have unforeseen issues that are ironed out in later years.
• Potential for Software Glitches: New infotainment systems and driver-assistance features can sometimes be buggy in early production models.

Why Caution is Advised:

While the 2024 M550i is undoubtedly an exciting car with cutting-edge technology, it is important to be aware of the potential risks associated with buying a first-year model. If you are considering a 2024 M550i, be prepared to deal with potential issues and consider waiting for a later model year to allow BMW to address any initial problems.

Key Considerations Before Buying Any M550i

Regardless of the model year you are considering, there are several key factors to keep in mind:

• Maintenance History: A well-maintained M550i is always a better bet than one that has been neglected. Ask for complete maintenance records and look for evidence of regular oil changes and other preventative maintenance.
• Pre-Purchase Inspection: Before buying any used M550i, have it inspected by a qualified BMW mechanic. They can identify potential problems that you might miss during a visual inspection.
• Test Drive: Take the car for a thorough test drive to assess its performance, handling, and overall condition. Pay attention to any unusual noises or vibrations.
• Warranty: If possible, purchase a car with a valid warranty. This can provide peace of mind and protect you from unexpected repair costs.
• Check for Recalls: Always check the VIN (Vehicle Identification Number) on the National Highway Traffic Safety Administration (NHTSA) website to see if the car has any outstanding recalls.

Specific Areas to Inspect During Pre-Purchase Inspection

• Oil Leaks: Carefully inspect the engine for any signs of oil leaks, particularly around the valve cover gaskets and the oil pan.
• Coolant Leaks: Check for coolant leaks around the radiator, hoses, and water pump.
• Turbochargers: Listen for any unusual noises from the turbochargers, such as whining or hissing.
• Suspension: Inspect the suspension components for wear and tear, including the shocks, struts, and control arms.
• Brakes: Check the brake pads and rotors for wear and tear.
• Electronics: Test all of the electronic features, including the infotainment system, driver-assistance features, and climate control.

Understanding the N63 Engine

The N63 engine is a twin-turbocharged V8 that powers the M550i. While it is a powerful and capable engine, it has also had its share of reliability issues, particularly in the early years. Some of the common problems associated with the N63 engine include:

• Oil Leaks: As mentioned earlier, oil leaks are a common issue with the N63 engine.
• Coolant Leaks: Coolant leaks can also occur, leading to overheating and potential engine damage.
• Turbocharger Issues: The turbochargers can fail prematurely, requiring costly repairs.
• Valve Stem Seal Issues: Worn valve stem seals can cause excessive oil consumption and blue smoke from the exhaust.
• Injector Problems: Faulty fuel injectors can lead to poor performance and misfires.

BMW has made improvements to the N63 engine over the years, but it is still important to be aware of these potential issues. Regular maintenance and a thorough pre-purchase inspection are essential for minimizing the risk of problems.

Frequently Asked Questions

Which M550i year is the most reliable?

The 2021-2023 LCI models are generally considered to be the most reliable, thanks to engine refinements and fewer early model year quirks.

Is the M550i expensive to maintain?

Yes, the M550i can be expensive to maintain due to its performance-oriented components and complex engineering. Budget accordingly for potential repairs.

What is the real-world MPG of an M550i?

Expect around 18-22 MPG combined, depending on your driving habits. Highway driving will yield better fuel economy.

Is the M550i faster than an M5?

No, the M5 is significantly faster and more track-focused. The M550i offers a balance of performance and comfort.

Should I buy a pre-LCI or LCI M550i?

The LCI (2021-2023) is generally recommended due to the increased horsepower, updated styling, and improved technology.

Conclusion

The BMW M550i is a fantastic blend of performance and luxury. While the 2021-2023 LCI models represent the sweet spot for reliability and features, a well-maintained pre-LCI model can still be a great option. Thorough research, a pre-purchase inspection, and a realistic budget for maintenance are key to enjoying your M550i ownership experience.