The Best Years For Bmw M6 And Some To Avoid

The BMW M6, a high-performance grand tourer, has captivated enthusiasts for decades with its blend of power, luxury, and style. Identifying the best years of the M6 requires a deep dive into its various generations, engine options, and reliability records. This guide aims to provide a comprehensive overview to help you make an informed decision when considering an M6.

BMW M6 Generations: A Quick Overview

Detailed Explanations

E24 (1983-1989): The Original M6

The E24 M6, often referred to as the M635CSi in Europe, is a classic. Its shark-nose styling is instantly recognizable, and its inline-6 engine (S38B35) delivers a thrilling driving experience. This generation is cherished for its analog feel and timeless design, making it a highly sought-after collector's item. Reliability is generally good, but age means that finding well-maintained examples can be challenging.

E63/E64 (2005-2010): The V10 Era

The E63 (coupe) and E64 (convertible) M6 represent a radical departure from their predecessor. The most significant feature is the high-revving 5.0-liter V10 engine (S85B50), producing a staggering 500 horsepower. This engine is a masterpiece of engineering, offering an exhilarating soundtrack and incredible performance. However, it's also the source of many potential headaches. The SMG (Sequential Manual Gearbox) is another unique aspect of this generation, offering a single-clutch automated manual experience.

Potential Issues with the E63/E64 M6:

• Rod Bearings: The S85 engine is notorious for rod bearing failures, especially in earlier models. Regular oil changes with high-quality oil and early preventative maintenance are crucial.
• Throttle Actuators: These are prone to failure and can be expensive to replace.
• SMG Pump: The SMG transmission relies on a hydraulic pump that can fail, leading to shifting problems.
• VANOS System: The VANOS (Variable Valve Timing) system can experience issues, resulting in reduced performance and error codes.

Why Some Consider it the Best: Despite these potential problems, many enthusiasts consider the E63/E64 M6 the best because of its unique and powerful V10 engine. The raw, visceral driving experience is unlike anything else on the market. If you're willing to invest in preventative maintenance and address potential issues proactively, the E63/E64 M6 can be an incredibly rewarding car to own.

F12/F13/F06 (2012-2018): The Turbocharged Era

The F12 (convertible), F13 (coupe), and F06 (Gran Coupe) M6 mark the transition to a twin-turbocharged 4.4-liter V8 engine (S63B44). This engine delivers even more power and torque than the V10, with significantly improved fuel economy. The dual-clutch transmission (DCT) offers lightning-fast shifts and a more refined driving experience compared to the SMG.

Advantages of the F12/F13/F06 M6:

• Increased Power and Torque: The twin-turbo V8 offers effortless acceleration and impressive performance across the rev range.
• Improved Fuel Economy: Compared to the V10, the V8 is significantly more fuel-efficient.
• More Reliable: The S63 engine is generally considered more reliable than the S85, although it still has some potential issues.
• Modern Technology: The F12/F13/F06 M6 features a more modern interior with advanced technology, including iDrive infotainment system.

Potential Issues with the F12/F13/F06 M6:

• Oil Leaks: The S63 engine can be prone to oil leaks, particularly from the valve covers and oil pan.
• Turbocharger Issues: Although rare, turbocharger failures can occur, especially with tuned or heavily modified engines.
• Cooling System: The cooling system can be prone to leaks and overheating issues.
• Electronics: As with any modern car, the F12/F13/F06 M6 can experience electronic glitches and sensor failures.

Specific Model Year Considerations (F12/F13/F06):

• 2013 Models: Early production models might have some minor software glitches.
• 2014-2016 Models: Generally considered the most reliable years of the F12/F13/F06 generation.
• 2017-2018 Models: Benefit from some minor updates and improvements, but are generally similar to the 2014-2016 models in terms of reliability.

Best Years of the BMW M6: A Summary

While each generation offers a unique driving experience, the following years stand out:

• E24 (1983-1989): For classic car enthusiasts seeking a timeless design and analog driving experience. Focus on finding well-maintained examples with documented service history.
• E63/E64 (2005-2010): For those who crave the raw power and sound of the V10 engine. Be prepared to invest in preventative maintenance and address potential issues proactively.
• F12/F13/F06 (2014-2016): For a balance of performance, reliability, and modern technology. These years offer a more refined driving experience and are generally considered the most reliable of the F12/F13/F06 generation.

Years to Potentially Avoid

While any M6 can be a great car with proper care, some years might require extra scrutiny:

• Early E63/E64 (2005-2007): These models are more prone to rod bearing failures and other issues. Thoroughly inspect these cars and consider a pre-purchase inspection by a qualified BMW mechanic.
• Heavily Modified M6s: Avoid cars with extensive modifications, especially those that haven't been properly documented or performed by reputable shops. Modifications can put extra stress on the engine and other components, increasing the risk of failure.

Frequently Asked Questions

• Which M6 is the most reliable? The F12/F13/F06 generation, particularly the 2014-2016 models, are generally considered the most reliable. The twin-turbo V8 engine is more robust than the V10.

• Is the E63/E64 M6 worth the risk? If you're willing to invest in preventative maintenance and address potential issues proactively, the E63/E64 M6 can be an incredibly rewarding car to own. The V10 engine offers a unique and exhilarating driving experience.

• What is the most common problem with the E63/E64 M6? Rod bearing failure is the most notorious issue with the S85 V10 engine. Regular oil changes and preventative maintenance are crucial.

• How much does it cost to replace rod bearings on an E63/E64 M6? The cost can range from $3,000 to $5,000, depending on the shop and location. It's a significant investment, but it can save you from a catastrophic engine failure.

• What are the key differences between the E63/E64 and F12/F13/F06 M6? The E63/E64 features a naturally aspirated V10 engine and SMG transmission, while the F12/F13/F06 has a twin-turbo V8 engine and dual-clutch transmission. The F12/F13/F06 also offers more modern technology and improved fuel economy.

Conclusion

Choosing the best year of the BMW M6 depends on your priorities and budget. The E24 offers classic charm, the E63/E64 delivers a unique V10 experience, and the F12/F13/F06 provides a blend of performance, reliability, and modern technology. Regardless of which generation you choose, thorough research, a pre-purchase inspection, and a commitment to maintenance are essential for ensuring a rewarding ownership experience.