Considering a used Mercedes ML (W164) diesel, often referred to as Ml Benz by enthusiasts? This review dives into the ownership experience of a 2008 ML320 CDI, offering insights into its strengths and potential drawbacks to help you make an informed decision. Based on real-world experience, we’ll explore what makes this model a “beast” on the road, while also highlighting the “warts” you need to be aware of.
The Allure of the ML Benz Diesel: Performance and Practicality
The Mercedes ML320 CDI (W164 chassis) from the 2007-2008 era presents a compelling package, especially for those seeking a robust SUV without the complexities of later AdBlue systems (introduced in 2009 for this model). Owners often praise its powerful engine, capable of tackling any driving situation. Dubbed “the beast” by some, the ML 320 CDI delivers confident performance, particularly on highways.
Fuel economy is another significant advantage. Diesel models like the ML320 CDI can achieve mid-20s MPG on the highway, a respectable figure for a vehicle of this size. While gasoline-powered counterparts require premium fuel and offer mid-to-high teens MPG, the diesel variant provides a clear edge in fuel efficiency.
Inside, the ML Benz showcases Mercedes’ renowned build quality. The interior is well-assembled, although signs of cost-saving measures are noticeable. Passenger space is generous, particularly in the second row, comfortably accommodating adults even with taller front occupants. Furthermore, the absence of AdBlue in these models means you benefit from a spare tire, albeit a compact one, adding a layer of practicality for longer journeys.
Addressing the “Warts”: Potential Issues and Maintenance
While the Mercedes ML (W164) diesel boasts numerous positives, potential buyers should be aware of certain drawbacks. The infotainment system, while featuring a powerful audio setup with impressive bass, lags behind modern standards in Bluetooth and iPod integration. Navigation, though functional, feels clunky compared to contemporary systems. Negotiating for a navigation DVD update from the dealer is advisable if this feature is important to you.
The power tailgate can be another area of concern. Owners have reported erratic operation, sometimes requiring manual assistance. This complexity stems from a hydraulic system located beneath the floor, which can be prone to wear over time.
Tire costs are also a factor. The factory-fitted 19-inch tires are expensive to replace, and TPMS sensor replacements are often necessary during tire changes. Budgeting for premium tire brands like Continentals, along with TPMS sensors, is crucial for maintaining optimal performance and safety.
Maintenance is a key consideration for any used ML Benz. Dealer servicing can be costly, especially for oil changes. DIY oil changes are feasible with a topsider, but strict adherence to the recommended “Mobil1 ESP Formula M 5W40” and the substantial 9-quart capacity is essential. Oil changes are recommended every 10,000 miles, and fuel filter replacements every 20,000 miles.
Transmission fluid maintenance is critical for the longevity of the 722.9 transmission. Despite manufacturer recommendations suggesting a single fluid change at 40,000 miles as “lifetime” fill, more frequent changes, around every 50,000 miles after the initial one, are highly recommended. This transmission requires a specific Mercedes-Benz fluid, and the fluid level check procedure is complex, lacking a traditional dipstick.
The engine and systems complexity are a significant leap from older, simpler diesel engines. The OM642 CDI engine is technologically advanced, making fuel cleanliness paramount. Contaminated fuel can severely damage the injectors, emphasizing the need to source fuel from reputable stations. While the fuel filter incorporates a water separator, preventative fuel sourcing is crucial.
Conclusion: A Recommended Purchase with Due Diligence
Despite these potential “warts,” a well-maintained Mercedes ML320 CDI (W164) remains a recommended purchase for those seeking a capable and relatively fuel-efficient SUV. Prioritizing a vehicle with comprehensive service records is paramount. Checking for key maintenance items like catalytic converter replacement (especially around the 100,000-mile mark) and transmission service history can mitigate potential issues down the line. By conducting thorough due diligence and understanding the potential maintenance needs, owning an ML Benz diesel can be a rewarding experience.
