The Mercedes Benz ML-Class, particularly the 2007 ML320 CDI model, remains a vehicle of interest for those seeking a blend of luxury, capability, and diesel efficiency. If you’re in the market for a used SUV and the 2007 Mercedes Benz ML320 CDI has caught your eye, understanding its strengths and weaknesses is crucial. Having spent time with a very similar 2008 model, consider this your guide to making an informed decision.
The Enduring Appeal of the 2007 Mercedes Benz ML320 CDI
There’s a reason why the ML320 CDI still turns heads. Under the hood lies the powerful OM642 diesel engine. This engine gives the vehicle a robust feel, capable of tackling various driving conditions with ease. Owners often describe it as a “beast,” and for good reason. It’s an excellent highway cruiser, offering a comfortable ride and surprisingly good fuel economy for its class. Expect to see mileage in the mid-20s MPG range on diesel. While gasoline models of the same era exist, they require premium fuel and offer lower MPG figures in the mid to high teens, making the diesel a more economical choice in the long run.
Stepping inside, the interior of the 2007 Mercedes Benz ML320 CDI showcases Mercedes-Benz’s commitment to quality, even from this period. The cabin is well-assembled, though it’s evident that cost-saving measures were introduced. Despite this, the interior holds up well. Rear passenger space is ample, ensuring comfortable journeys for everyone, provided front seats aren’t pushed all the way back. Even taller individuals around 6’3″ will find adequate headroom and legroom. A significant advantage of the 2007 diesel model is the absence of AdBlue, which means you get a spare tire – albeit a compact one – a feature increasingly rare in modern SUVs.
Acknowledging the Warts: Areas to Consider
While the 2007 Mercedes Benz ML320 CDI has many positives, it’s important to be realistic about its age and some inherent drawbacks. Technology is one area where the vehicle shows its age. The audio system, while sounding impressive with near-competition level bass, features Bluetooth and iPod integration that feels dated by today’s standards. It functions, but lacks the seamlessness of modern systems and notably misses A2DP support for audio streaming. Similarly, the navigation system is functional but clunky compared to contemporary units. If purchasing from a dealer, negotiating for an updated navigation DVD might be worthwhile, though these can be expensive.
Another frequently mentioned quirk is the power tailgate. It can be temperamental, sometimes opening on its own, other times requiring assistance. This is likely due to a weakening hydraulic system that operates the tailgate mechanism, a complex setup located beneath the floor.
Tire costs are another point to consider. The factory-fitted 19-inch tires are expensive to replace. When tire replacement becomes necessary, factor in the Tire Pressure Monitoring System (TPMS) sensors, which often need replacing concurrently, adding to the overall cost.
Maintenance Matters: Keeping Your 2007 ML320 CDI Running Smoothly
Maintenance is key to the longevity of any vehicle, and the 2007 Mercedes Benz ML320 CDI is no exception. Dealer servicing can be expensive, particularly for oil changes. DIY oil changes are feasible, especially with a topsider oil extractor, but require specific oil: “Mobil1 ESP Formula M 5W40.” It’s also a high-capacity system, needing around 9 quarts per change. Oil changes are recommended every 10,000 miles, and fuel filter replacements every 20,000 miles.
Transmission fluid maintenance is critical. Mercedes initially suggested a “lifetime” fill after a 40,000-mile initial change. However, experience with similar Mercedes transmissions indicates fluid changes every 50,000 miles after the initial service are prudent for long-term reliability. This transmission requires a specific Mercedes fluid, and the fluid level check procedure is complex, lacking a traditional dipstick.
The OM642 diesel engine, while powerful, is significantly more complex than older diesel engines. Its Common Rail Direct Injection (CDI) system is sensitive to fuel quality. Water or contaminants in the fuel can be detrimental to the injectors. Therefore, fuel source awareness is essential. The fuel filter does incorporate a water separator for added protection.
For those considering a 2007 Mercedes Benz ML320 CDI with around 100,000 miles, checking for catalytic converter replacement is advisable. This component can become clogged around this mileage, and replacement can be a significant expense if not already addressed.
Verdict: An Intelligent Used SUV Choice?
Despite some age-related technology limitations and potential maintenance considerations, a well-maintained 2007 Mercedes Benz ML320 CDI with a complete service history can be a compelling used SUV purchase. It offers a robust driving experience, diesel fuel efficiency, and a comfortable, spacious interior. Understanding its potential quirks and adhering to a proactive maintenance schedule will ensure a rewarding ownership experience. If you find a 2007 or even a 2008 model (virtually identical and also AdBlue-free) that has been meticulously cared for, it’s definitely worth serious consideration.
