The Mercedes-Benz W210 E-Class, particularly the 2002 E320 model, often sparks varied opinions among automotive enthusiasts. While some may approach it with skepticism, especially those deeply rooted in the legacy of the W123 and W124, many owners have discovered the W210’s merits, praising its blend of sophistication and surprising dependability. If you’re considering a 2002 E320 or already own one, understanding its potential issues and strengths is crucial for a smooth ownership experience.
Engine and Powertrain Resilience
A significant advantage of the 2002 E320 lies in its robust M112 engine. This powerplant is renowned for its durability. Seasoned Mercedes-Benz mechanics frequently attest to the engine’s bulletproof internal components, often stating they rarely need to perform major head work on the M112. While the engine itself is remarkably sturdy, some peripheral issues can arise. Valve cover breathers are known to develop leaks over time, but fortunately, addressing this is a relatively straightforward repair. Routine maintenance items like spark plugs are designed for longevity, typically lasting around 100,000 miles, contributing to lower long-term running costs.
For diesel aficionados, although not directly relevant to the E320 gasoline model, the W210 also housed the OM606 engine in models like the E300 Turbodiesel. This diesel engine is legendary for its robustness and reliability, further showcasing the overall engineering quality of the W210 platform.
Transmission Considerations and Solutions
The 722.6 transmission, commonly paired with the E320, is generally robust but not without its nuances. Mercedes-Benz implemented revisions during the W210 production run to rectify a bushing issue that could lead to problems. Regular transmission fluid changes are paramount to maintaining the 722.6’s health and longevity. If issues do emerge, they often manifest as problems with the electrical connector/bushing, a relatively inexpensive fix, or potentially the conductor plate, a more involved but still manageable repair. Facelift versions of the W210 incorporated upgraded transmissions, which are generally considered more refined and potentially more reliable.
Addressing Common W210 Concerns
Prospective and current 2002 E320 owners should be aware of a few common areas that might require attention, especially as these vehicles age. Beyond standard “new” old car procedures like replacing belts, hoses, and fluids, preventative maintenance can significantly enhance reliability. Replacing the crank position sensor is a wise, inexpensive preemptive measure. Window regulators are also known to fail in W210s, so be prepared for potential repairs if they haven’t already been addressed.
For those who undertake long journeys, additional proactive steps can provide peace of mind. While changing the transmission fluid, consider replacing the conductor plate and electrical plug as preventative maintenance. Carrying a spare MAF sensor and K40 relay can also be beneficial for long trips, acting as readily available solutions for potential sensor or relay failures. Lastly, pay attention to the front wheel bearings, as they might be somewhat more susceptible to wear compared to earlier Mercedes-Benz chassis. Keeping them properly packed is crucial for preventing premature failure.
Conclusion: Reliability Through Diligence
The 2002 Mercedes-Benz E320, while having a few typical age-related issues, stands out as a fundamentally reliable vehicle, particularly regarding its engine and transmission. By addressing the common problem areas and adhering to a schedule of regular maintenance, owners can enjoy a dependable and rewarding ownership experience with their W210 E320. With proactive care, the 2002 E320 proves to be a solid choice in the used luxury car market, offering a blend of Mercedes-Benz engineering and enduring quality.
