Mercedes-Benz C-Class2017

• Diesel engines offer strong fuel economy and low tax, but 2017 C-Class diesel has chronic DPF and AdBlue faults—expect €800–€1,500 repair bills and potential limp-mode breakdowns.
• At median €19,950, pricing reflects strong demand (+51.9% YoY) and tight supply; comparable petrol C-Class or rivals like Audi A4 may offer better long-term ownership peace of mind.
• Turbocharger carbon build-up common; inspect service history closely for regular DPF cleaning intervals and AdBlue top-ups—missing records signal neglect and higher failure risk.
• Before purchase, request full diagnostic scan (€150–€250 at specialist) to check DPF health, AdBlue heater function, and turbo boost pressure; a recent regen cycle is good sign.
• 156k km median is typical for age; verify NCT pass date (must be current or due within 6 months) and motor tax CO2 band to avoid surprise costs.

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