AVOIR rates the 2018 Mercedes-Benz CLS550 4matic's reliability 96/100 — excellent — from NHTSA recall counts, complaint density, and multi-year defect trends. Its overall AVOIR ownership score is 70/100 (Good).
AVOIR scores the 2018 Mercedes-Benz CLS550 4matic's longevity 79/100 (good), estimated from high-mileage survival data and resale-panel evidence of how far these vehicles actually run.
AVOIR scores the 2018 Mercedes-Benz CLS550 4matic on maintenance 52/100 and depreciation 51/100 — higher is better (lower real cost) — plus fuel, insurance and resale in the full breakdown above.
See all 2018 Mercedes-Benz CLS-Class trims & reliability scores.
AVOIR scores every vehicle across 7 ownership factors using EPA fuel-economy data, NHTSA safety & complaints, IIHS ratings, and a proprietary used-market resale panel.