Mercedes-Benz has long been synonymous with luxury and innovation, and the 2009 ML320 BlueTec is a testament to this legacy, particularly in the realm of diesel technology. BlueTec represents Mercedes-Benz’s commitment to crafting the cleanest diesel engines, aiming to revolutionize diesel’s reputation in markets like America. The 2009 ML320 BlueTec SUV, along with its siblings the GL320 and R320 BlueTec, marked a significant step forward as the first diesel utilities legal in all 50 U.S. states. This review delves into the nuances of the ML320 BlueTec, exploring whether this clean diesel SUV could be the right choice for discerning drivers.
At first glance, the 2009 Mercedes-Benz ML320 BlueTec may appear as a subtly refreshed version of the M-Class. However, the BlueTec badge and the 3.0-liter turbo-diesel V6 engine under the hood signal a significant departure. This engine delivers 210 horsepower and an impressive 398 pound-feet of torque, offering a robust driving experience.
Fuel efficiency is a standout feature of the ML320 BlueTec. It boasts EPA ratings of 18 mpg city and 24 mpg highway, a 20-30% improvement over comparable gasoline SUVs. Real-world mixed driving conditions still impress, with drivers reporting around 21 mpg. This fuel economy even slightly surpasses that of the Chevy Tahoe Hybrid, placing the ML320 BlueTec as a leader in its class for efficiency.
But efficiency is only half the story. The “BlueTec” in 2009 Mercedes-Benz ML320 BlueTec signifies its commitment to clean emissions. Achieving 50-state legal status is due to Mercedes-Benz’s advanced AdBlue after-treatment system. This system injects a urea solution into the exhaust stream, effectively converting harmful nitrous oxides into harmless nitrogen and water.
The AdBlue tank, cleverly positioned under the cargo floor, requires refills only during regular service intervals. This user-friendly design ensures that even during demanding tasks like towing up to its 7,200-pound capacity, the clean operation of the 2009 ML320 BlueTec remains uncompromised. The substantial torque figure translates to effortless hauling and confident acceleration. Performance tests reveal a 0-60 mph time of just 7.9 seconds and a quarter-mile sprint in 16 seconds at 87 mph – remarkable figures for a diesel SUV.
The driving experience of the ML320 BlueTec is surprisingly responsive. Turbo lag is minimal, and the engine revs eagerly, feeling more akin to a gasoline engine than a traditional diesel. The 7-speed automatic transmission, equipped with paddle shifters, provides smooth and quick gear changes, with optimal performance achieved in automatic mode.
Mercedes-Benz has truly refined the diesel engine in the 2009 ML320 BlueTec. Comparisons to the gasoline V6 Mercedes ML350 reveal minimal discernible difference in noise and vibration. Even close listening to the dual exhaust pipes yields little of the characteristic diesel clatter, showcasing the exceptional engineering of the BlueTec V6.
In terms of handling, the 2009 ML320 BlueTec retains the solid and composed feel expected of a Mercedes SUV. Despite its size, it exhibits nimble responses, especially for a mid-size SUV. Understeer is managed effectively, and body roll is well-controlled, contributing to an overall balanced driving dynamic. Consistent with the M-Class lineage, the ML320 BlueTec ranks among the best-handling SUVs in its segment. Braking performance is also commendable, bringing the SUV to a halt from 60 mph in an average of 125 feet with a stable chassis and firm pedal feel. Electronic Stability Control and Hill Start Assist further enhance driver confidence. For off-road capabilities, the ML320 BlueTec features 4Matic full-time 4-wheel-drive and Downhill Speed Regulator.
The interior of the five-passenger 2009 Mercedes-Benz ML320 BlueTec is as luxurious and well-appointed as expected. Standard features include Pre-Safe system, a comprehensive suite of airbags, newly designed front seats with 4-way lumbar support for the driver, and dual-zone automatic climate control.
Entertainment is provided by an 8-speaker CD/DVD system integrated with the COMAND multi-function controller. Upgrades include a Harman Kardon surround sound system and a rear-seat entertainment system with twin 8-inch screens.
Practicality is also addressed with a 60/40 split rear seat for flexible passenger and cargo configurations, and an optional power liftgate for convenient access to the cargo area. The cargo bay offers 29.4 cubic feet of space with the rear seats up, expanding to a generous 72.4 cubic feet with the seats folded.
Surprisingly, opting for the diesel-powered luxury of the 2009 Mercedes-Benz ML320 BlueTec doesn’t come with a prohibitive price premium. With a base price of $48,125, it is only approximately $1,500 more than the gasoline-powered ML350.
The 2009 Mercedes-Benz ML320 BlueTec presents a compelling case for the resurgence of diesel in the American automotive landscape. While fuel price fluctuations between diesel and gasoline remain a consideration, BlueTec technology effectively positions diesel SUVs as both a viable and appealing choice for households seeking luxury, performance, and efficiency.
2009 Mercedes-Benz ML320 BlueTec Specifications
- Engine: 3.0-Liter Turbo-diesel V6
- Horsepower: 210
- Torque: 398 Lb-ft
- 0-60 MPH: 7.9 Seconds
- 1/4 Mile: 16.0 Seconds @ 87 MPH
- 60-0 MPH: 125 Feet
- EPA Fuel Economy: 18 MPG City / 24 MPG Highway
- Observed Mixed Fuel Economy: 21 MPG
