Mercedes-Benz · W420 · 2021-present

W420 Guides

Purchase examples with full service history and documented fleet maintenance records for reliability assurance. Focus on lower mileage examples under 80,000 kilometers for optimal investment potential and longevity.

IssueSeverityNotes
DPF regeneration issues on early diesel unitsMediumEnsure regular highway driving and authorized service
Infotainment system software glitchesLowFirmware updates resolve most connectivity issues