Mercedes-Benz E-Class2017

Known issues

• DPF (Diesel Particulate Filter) clogging and regeneration issues, particularly on low-mileage or urban-driven vehicles
• EGR (Exhaust Gas Recirculation) valve carbon buildup leading to reduced power and increased emissions
• Diesel injector stiction and deposits affecting cold-start performance and fuel economy
• Turbocharger bearing wear and occasional lag at low RPM, especially on higher-mileage examples
• Coolant pipe corrosion and weeping seals on the engine block, requiring replacement around 80,000+ miles
• 9-speed automatic gearbox (9G-TRONIC) occasional shuddering or hesitation during gear changes

Good for

• Fuel economy and low CO2 emissions compared to equivalent petrol engines
• Strong torque delivery and refinement across the rev range
• Build quality, interior materials, and infotainment system (COMAND)
• Longevity and durability of the powertrain if serviced with quality diesel and regular oil changes