MINI Cooper R56 — Reliability

R56 2006–2010 1 engine

Reliability Summary

Engine EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1) — 40/100 AVOID
Known Issues 7

Engine in this model

AVOID 40

EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1)

1.6L Turbo I4

First-generation BMW/PSA Prince turbo (MINI N14, Peugeot/Citroen THP 150-175). Timing chain and tens...

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Known Issues Across All Engines

Issue Engine Severity Onset
Timing chain stretch and hydraulic tensioner failure — chain can jump EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1) critical 40,000 km – 110,000 km
High oil consumption — piston rings, valve stem seals, crankcase breather EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1) high —
High-pressure fuel pump failure (THP) EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1) high 70,000 km
Turbo oil-feed line coking and turbo bearing damage EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1) moderate —
Carbon buildup on intake valves EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1) moderate 50,000 km – 100,000 km
Thermostat housing and water pump coolant leaks EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1) minor —
Electric auxiliary turbo coolant pump can overheat - recall (MINI) EP6DT/EP6DTS THP · N14 (Prince turbo, gen 1) minor —