Mercedes-Benz Ml-Class ReliabilityAll Years Ranked (1998–2014)
Side-by-side reliability scores, risk levels, and owner-cost projections for every Mercedes-Benz Ml-Class we've analyzed. Identify the best years to buy, the ones to avoid, and the problems that follow the Ml-Class across generations.
Average Score
68/100
Best Year
2012 Mercedes-Benz Ml-Class
Score 79
Weakest Year
1999 Mercedes-Benz Ml-Class
Score 58
Every Mercedes-Benz Ml-Class Ranked
Sorted by reliability score. Each link opens the full year-specific report.
A comfortable and capable luxury SUV that rewards informed ownership, but punishes neglect with substantial repair costs.
Top risks: Airmatic Suspension (Air Springs/Compressor) · 7G-Tronic (722.9) Transmission Valve Body / Conductor Plate · M276/M278 Engine Timing Chain Tensioners/Check Valves
A premium SUV with great bones, but be prepared for specific, high-cost maintenance to keep it running smoothly.
Top risks: Airmatic Suspension System · 7G-Tronic Transmission Conductor Plate · Engine Oil Leaks (M272/M273/OM642)
A premium SUV offering luxury and performance, but demands a premium in maintenance and carries significant risk for complex system failures.
Top risks: Airmatic Air Suspension · OM642 V6 Diesel (BlueTEC) Emissions System · Electrical & Infotainment Systems
A comfortable and capable luxury SUV that demands respect for its complex systems and potential for costly repairs.
Top risks: Airmatic Air Suspension · Electrical System · Fluid Leaks & Seals
A premium SUV offering luxury and power, but prepare for substantial upkeep costs, particularly for models with advanced options or diesel engines.
Top risks: AIRMATIC Air Suspension · Diesel Emissions System (BlueTEC) · Powertrain Electrical/Sensors
A comfortable luxury SUV that requires a serious commitment to preventative maintenance and an ample repair fund to avoid costly breakdowns.
Top risks: Electrical System · Transmission (5G-Tronic 722.6) · Rust and Corrosion
A luxury SUV bargain with the potential to become a money pit if not thoroughly vetted and maintained.
Top risks: Automatic Transmission (722.6) · Electrical System · Suspension & Steering Components
A tempting luxury SUV that requires a healthy contingency fund and proactive maintenance to truly enjoy.
Top risks: Electrical System · Air Conditioning System · Body/Corrosion
A luxury SUV that demands a healthy repair budget and a diligent owner to enjoy its many comforts without financial strain.
Top risks: Electrical System · Airmatic Air Suspension · Transmission (7G-Tronic)
A comfortable luxury SUV that provides a premium experience, but requires deep pockets and proactive maintenance to mitigate its significant repair risks.
Top risks: Airmatic Air Suspension · 7G-Tronic Transmission · Electrical System
A premium SUV that delivers luxury but at a potentially high cost of ownership if maintenance is deferred.
Top risks: Airmatic Air Suspension · Engine Issues (M272/M273/OM642) · 7G-Tronic Transmission (Conductor Plate)
A tempting luxury SUV that requires a hefty repair budget and a high tolerance for electrical quirks.
Top risks: Electrical System · Transmission · Rust and Corrosion
A tempting bargain that often becomes a money pit due to aging complexity and initial build quality flaws.
Top risks: Electrical System · Transmission (722.6) · Suspension & Steering
A luxurious and capable SUV that will demand a significant investment in preventative maintenance and repairs to remain a reliable daily driver.
Top risks: Electrical System · Transmission (722.6 Automatic) · Rust and Corrosion
A luxury SUV bargain with a high potential for costly repairs, requiring diligent maintenance and a healthy contingency fund.
Top risks: Airmatic Air Suspension · Transmission (722.6 5G-Tronic) · Electrical System & Wiring
A luxurious and capable SUV that demands a premium for its continued operation, requiring a substantial repair budget.
Top risks: Engine Timing Components (M272/M273) · Airmatic Suspension System · Transmission Conductor Plate/Valve Body
A tempting luxury SUV on a budget, but only for the prepared enthusiast with deep pockets for its numerous and complex ailments.
Top risks: Electrical System · Transmission (722.6 Automatic) · Rust and Corrosion
Problems That Follow the Ml-Class Across Generations
Issues that appear in the top-3 risks across multiple model years — the cost of ownership you can actually predict.
Electrical System
Appears in 10 model years · 59% of generations
Airmatic Air Suspension
Appears in 6 model years · 35% of generations
Rust and Corrosion
Appears in 4 model years · 24% of generations
Transmission (722.6 Automatic)
Appears in 2 model years · 12% of generations
Airmatic Suspension System
Appears in 2 model years · 12% of generations