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🟢 SOLVED: Nissan Navara D40 2.5 dCi YD25 cracked cylinder head — Nissan Navara 2007 | MyCarFault
🟢 SOLVED 0% 3 fixes reported · 267 driver confirmations

🟢 Nissan Navara D40 2.5 dCi YD25 cracked cylinder head

Nissan Navara 2007
On This Page: ⚙️ Causes 🔧 All Repairs ⚠️ Avoid These 🧾 Driver Reports 🔗 Similar Faults
⚡ Quick Summary
Severity Level
Critical
Safe to Drive?
🚫 Do NOT Drive
Safety Impact
Direct safety risk — affects safe operation of the vehicle
Urgency Level
🔴 Fix Immediately
Estimated Repair Cost
GBP 80 – 1,200

Coolant loss, white smoke, and overheating on the Nissan Navara D40 with the 2.5 dCi YD25DDTi engine. This is one of the most widely reported faults on the Navara D40 — the aluminium cylinder head is prone to cracking between the valve seats, particularly in hot climates and in vehicles used for heavy towing. Nissan settled class action lawsuits in multiple countries. The repair requires head replacement with the updated specification head. Prevention: avoid sustained maximum load towing in high ambient temperatures.

⚙️ Possible Causes

Possible: Nissan dealer covered it under goodwill at 85k Possible: Prevention — EGR delete and coolant flush on early signs Possible: Cracked head confirmed — reconditioned head fitted

Repair / Solution

Based on 267 driver confirmations

Nissan dealer covered it under goodwill at 85k 0%
0 worked · 0 did not · GBP 400 – 700 · ⚪ Unverified 🔧 Mechanic verified
Prevention — EGR delete and coolant flush on early signs 0%
0 worked · 0 did not · GBP 80 – 180 · ⚪ Unverified
Cracked head confirmed — reconditioned head fitted 0%
0 worked · 0 did not · GBP 750 – 1,200 · ⚪ Unverified 🔧 Mechanic verified

⚠️ Wrong Diagnosis?

No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Nissan Navara 2007 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.

🧾 Driver Reports

✅ Fixed Nissan dealer covered it under goodwill at 85k

Took it to Nissan dealer when symptoms started — white smoke, slight coolant loss. They knew exactly what it was immediately. Got 50% goodwill contribution toward the repair even out of warranty because it's such a known issue. Worth asking Nissan directly before paying full whack.

Parts replaced: Head replacement (partial dealer contribution)

💰 GBP 400 – 700 🔧 Mechanic verified
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✅ Fixed Prevention — EGR delete and coolant flush on early signs

Bought mine knowing about this issue. Did a coolant flush, EGR delete (blanking plate) and fitted an oil cooler thermostat delete straight away. 40k miles since and no issues. The cracking is linked to heat cycling — keeping the EGR clean and coolant fresh reduces the risk significantly.

Parts replaced: EGR blanking plate, coolant, thermostat delete kit

💰 GBP 80 – 180
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✅ Fixed Cracked head confirmed — reconditioned head fitted

White smoke, coolant loss, mayo in oil. Classic D40 YD25 cracked head. This is a known issue on these engines. Reconditioned head from specialist who had modified the head to address the original weakness. £900 fitted. Had the injectors serviced at same time. Running well 20k miles on.

Parts replaced: Reconditioned cylinder head (uprated), head gasket set, injector service

💰 GBP 750 – 1,200 🔧 Mechanic verified
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