Ford S-Max2018

Known issues

• DPF (diesel particulate filter) clogging and regeneration failures, particularly on low-speed/urban driving patterns
• Fuel injector sticking and failure leading to rough idle and loss of power
• EGR (exhaust gas recirculation) valve carbon build-up causing limp mode and diagnostic faults
• Turbocharger bearing wear and oil starvation if servicing intervals extended
• Transmission judder on low-speed manoeuvres (Powershift dual-clutch gearbox in some variants)
• Water ingress into tailgate and door seals causing electrical corrosion

Good for

• Spacious interior with flexible seating for families and school runs
• Respectable fuel economy on motorway cruising (45–50 mpg realistic)
• Strong low-end torque from TDCi diesel engine for laden towing and acceleration
• Robust build quality and relatively straightforward mechanical design