The Best Years For Mercedes Benz 320 And Some To Avoid

The Mercedes-Benz 320, spanning various model lines across several decades, represents a blend of luxury, performance, and engineering excellence. Identifying the best years, and those to potentially avoid, is crucial for prospective buyers seeking a reliable and rewarding ownership experience. This guide dives deep into the Mercedes-Benz 320 lineage, providing detailed insights to help you make an informed decision.

Mercedes-Benz 320: Model Years Overview

Detailed Explanations

W142 (1937-1942): This pre-war model is a classic and its value lies in its historical significance. Judging it by modern reliability standards is inappropriate. Condition and provenance are paramount when considering a W142. Restoration quality and documented history will significantly impact its value and suitability. Maintenance will require specialized knowledge and access to potentially scarce parts.

W220 S320 (1998-2005): The W220 S-Class aimed for cutting-edge technology but faced initial teething problems.

• 2003-2005 (Facelifted Models): These models benefited from significant improvements in build quality, electronic systems, and overall reliability. The facelift included revised styling, updated interior features, and addressed many of the early production issues.
• 1998-2000 (Early Production Issues): These years were plagued by electronic glitches, air suspension failures, and build quality concerns. These issues could lead to costly repairs.

W221 S320 CDI (2005-2013): The W221 offered a more refined and technologically advanced experience compared to its predecessor.

• 2009-2013 (Facelifted Models): The facelifted W221 S320 CDI showcased updated styling, improved fuel efficiency, and enhanced driver assistance systems. Reliability was generally better in these later models.
• 2005-2007 (Potential for Early CDI Issues): The early CDI (Common Rail Direct Injection) diesel engines, while efficient, could experience injector problems and other diesel-specific issues. These could be expensive to rectify.

W211 E320 (2002-2009): The W211 E-Class was a popular choice, but some years are more desirable than others.

• 2007-2009 (Facelifted Models): These models received a comprehensive facelift, addressing many of the earlier reliability concerns. The updated styling, improved interior, and enhanced engine options made them a more appealing choice.
• 2003-2005 (Early SBC Brake System Concerns): The Sensotronic Brake Control (SBC) system, while innovative, was prone to failures, resulting in expensive repairs. While Mercedes-Benz extended the warranty on the SBC pump, potential buyers should be aware of this issue.

W203 C320 (2000-2007): The W203 C-Class offered a more compact and sporty alternative.

• 2004-2007 (Improved Reliability): Later W203 models benefited from improvements in build quality and reliability. These models are generally considered more durable and less prone to electronic glitches.
• 2001-2003 (Early Production Issues): The initial years of the W203 C320 faced issues with the electrical system, particularly the instrument cluster and door locks.

R170 SLK320 (2000-2004): The R170 SLK320 is a fun and relatively affordable roadster.

• 2003-2004 (Later Production Refinements): These models saw subtle refinements in build quality and component reliability. These small improvements can make a difference in the long run.
• 2000-2001 (Potential for Early Issues): Early R170 SLK320s had some reported issues with the retractable hardtop mechanism and minor electrical gremlins.

W163 ML320 (1997-2005): The W163 ML320 was Mercedes-Benz's first foray into the SUV market.

• 2002-2005 (Improved Build Quality): The later years of the W163 ML320 production run saw significant improvements in build quality and reliability. Mercedes-Benz addressed many of the issues that plagued the earlier models.
• 1998-2000 (Early Production Issues): The initial models suffered from quality control issues, including squeaks, rattles, and electrical problems. These issues were often attributed to the manufacturing location in the United States.

Factors Influencing the "Best" Year

Several factors contribute to determining the "best" year for a specific Mercedes-Benz 320 model. These include:

• Facelifts: Facelifted models often incorporate design updates, improved technology, and, most importantly, address reliability issues identified in earlier production years. Look for models that underwent a mid-cycle refresh.
• Technical Updates: Engine improvements, transmission upgrades, and the introduction of new safety features can significantly impact the ownership experience. Research the specific technical changes introduced in each model year.
• Recalls and Technical Service Bulletins (TSBs): Reviewing recall history and TSBs can provide valuable insights into potential problem areas and the manufacturer's response to them. A clean recall history is a positive sign.
• Owner Forums and Reviews: Online forums and owner reviews offer real-world perspectives on the reliability and common issues associated with different model years. Pay attention to recurring themes and patterns.
• Production Location: In some cases, the production location can influence build quality. For example, early W163 ML-Class models produced in the US faced initial quality control challenges.
• Specific Model Variations: Certain variations within a model line might have unique features or improvements. For example, a specific trim level might include a more advanced suspension system or a more powerful engine.

Common Issues to Look Out For

Regardless of the model year, several common issues can affect Mercedes-Benz 320 models:

• Electrical Problems: Mercedes-Benz vehicles, particularly those from the late 1990s and early 2000s, are known for complex electrical systems that can be prone to failures.
• Air Suspension Issues: Models equipped with air suspension can experience leaks and compressor failures, leading to costly repairs.
• Rust: Check for rust, especially in areas prone to corrosion, such as wheel arches, door sills, and underbody components.
• Engine and Transmission Maintenance: Ensure that the engine and transmission have been properly maintained with regular oil changes and fluid flushes.
• SBC Brake System (W211 E-Class): As mentioned earlier, the SBC brake system on the W211 E-Class is a potential area of concern.

Pre-Purchase Inspection

Before purchasing any Mercedes-Benz 320, a thorough pre-purchase inspection by a qualified mechanic is essential. This inspection should include:

• Visual Inspection: Check for rust, body damage, and signs of previous repairs.
• Mechanical Inspection: Inspect the engine, transmission, suspension, brakes, and exhaust system.
• Electrical System Check: Test all electrical components, including lights, windows, locks, and the infotainment system.
• Diagnostic Scan: Scan the vehicle's computer for any stored error codes.
• Fluid Level Check: Check the levels and condition of all fluids, including engine oil, transmission fluid, coolant, and brake fluid.
• Test Drive: Take the vehicle for a test drive to assess its performance, handling, and braking.

Frequently Asked Questions

• Which Mercedes-Benz 320 is the most reliable? Generally, the facelifted models from the later years of each production run tend to be more reliable due to improvements and fixes implemented by Mercedes-Benz. For example, the 2007-2009 W211 E320 is often considered more reliable than the earlier models.

• Are Mercedes-Benz 320s expensive to maintain? Mercedes-Benz vehicles, including the 320 models, can be more expensive to maintain than some other brands due to the cost of parts and specialized labor. Regular maintenance and preventative care are crucial to minimize potential issues.

• What should I look for when buying a used Mercedes-Benz 320? Look for a well-maintained example with a comprehensive service history. Pay close attention to potential problem areas specific to the model and year, such as electrical issues, air suspension problems, and rust.

• Is the SBC brake system a deal-breaker? While the SBC brake system can be a concern, it doesn't necessarily have to be a deal-breaker if the system has been properly maintained or replaced. Obtain detailed service records and consider an inspection by a mechanic familiar with the SBC system.

• Are older Mercedes-Benz 320s worth buying? Older Mercedes-Benz 320s can be worthwhile purchases if you are willing to invest in maintenance and repairs. Choose a model in good condition with a known history and budget accordingly.

Conclusion

Choosing the best year for a Mercedes-Benz 320 requires careful consideration of model-specific issues, facelift updates, and overall maintenance history. By focusing on later production years and conducting thorough pre-purchase inspections, buyers can increase their chances of finding a reliable and enjoyable Mercedes-Benz 320. Research and due diligence are key to making an informed decision and avoiding potential pitfalls.