Mercedes-Benz S 500 2021
Analysis of 35 active listings for Mercedes-Benz S 500 2021 from mobile.bg, cars.bg and other sources. Real market prices, known engine issues and what to check before buying.
Petrol 35Hybrid 1
📊 Market data
- Cheap listings67 980 €
- Typical price79 709 €
- Expensive listings89 740 €
- Average mileage100 621 км
⚙️ Engines — what to expect
Mercedes M278 4.7 biturbo V8 — M278
Known issues
- Turbo oil lines and gaskets in the hot V area can leak — oil drips onto exhaust. (~500–1 500 € repair)
- Chain tensioner can weaken — chain noise on cold start. (~800–2 500 € repair)
Mercedes M113 V8 (4.3/5.0) — M113
Known issues
- Same swirl flap linkage issue as M112. (~200–600 € repair)
- Engine wiring harness insulation becomes brittle with heat — intermittent misfires, sensor issues. (~400–1 200 € repair)
Mercedes M176 4.0 V8 bi-turbo — M176
Known issues
- Hot-V layout causes oil line connections to seep. (~400–1 000 € repair)
- Close-coupled cats in valley degrade faster. (~1 500–4 000 € repair)
🚨 What to check before buying
Overall risk score: 10/10
Serious risks
- Hot-V turbo oil leaks: Turbo oil lines and gaskets in the hot V area can leak — oil drips onto exhaust.
Additional notes
- Mercedes M278 4.7 V8 twin-turbo with 100k+ km: timing chain tensioners and guides wear, causing rattling on startup. Chain is at the front but still expensive due to engine complexity. Also prone to: turbo actuator failure, air suspension issues (in S/CLS-Class), and expensive sensor failures. Budget €2,000-4,000 for timing chain service.
- Mercedes 4.0 V8 bi-turbo (hot-V) is a complex engine. Turbo oil line seepage, catalytic converter heat damage, and general premium-V8 maintenance costs. Budget €1,500-3,000/year beyond normal service.
🔥 Current market offers
5 cheapest active listings for Mercedes-Benz S 500 2021. Click "Analyze" for a full report with market valuation, risk analysis and photo analysis.
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