Base / XLT / Limited / Platinum / Sport (5th gen, 2011–2019)
Monitor
The 5th-gen Explorer was a long-running and popular platform but had notable issues. The main problem is documented exhaust fume intrusion into the cabin on 2011–2017 models, which Ford addressed with a TSB but never issued a recall on. The 3.5L EcoBoost has Phase 1 and Phase 2 timing chain issues on early builds. The 2.3T EcoBoost is the more reliable choice for daily use. 2018–2019 refinements improved quality. Verify the exhaust/HVAC recall status carefully.
Items to check
13
Open recalls
3
NHTSA complaints
1240
Top concern
Engine / Exhaust intrusion / Cooling
Exhaust Fume Intrusion — Safety Issue
Carbon monoxide / exhaust in cabin (2011–2017)
Critical — Verify Remedied
NHTSA investigated Ford Explorer for exhaust fumes entering the cabin through HVAC. Ford issued TSB 17-0064 addressing drainage and HVAC but no mandatory recall. This is a serious CO exposure risk.
Test HVAC on recirculate. Any exhaust smell with windows closed = do not purchase until dealer verifies TSB 17-0064 has been completed.
Est. cost: Free dealer TSB repair if completed; $0–$1,000 if notSource: NHTSA Explorer exhaust investigation / TSB 17-0064
Engine — Timing Chain (3.5L EcoBoost)
3.5L EcoBoost timing chain (early builds)
High Risk on pre-2016
3.5L EcoBoost Explorers have documented timing chain stretch on Phase 1 engine builds (pre-2016 approximate). Cold-start rattle = chain worn.
Cold-start with hood open. Any chain rattle = budget $2,000–$3,500 for repair or walk away.
Est. cost: $2,000–$3,500 timing chain serviceSource: Ford 3.5L EcoBoost chain pattern
2.3T EcoBoost — better choice for reliability
Low Risk
The 2.3T is the more reliable engine option for daily drivers with fewer chain and cooling concerns.
Standard oil and cold-start check.
Est. cost: Routine maintenanceSource: Ford 2.3T EcoBoost reliability
Cooling System
Coolant leak (3.5L EcoBoost and V6)
Monitor
Water pump and radiator hoses are common failure points at 80k+ miles.
Inspect coolant reservoir level and hoses for seeping. Test cabin heat output at idle.
Est. cost: $400–$900Source: Ford Explorer cooling pattern
Documentation
TSB 17-0064 completion + service records
High Risk without
For 2011–2017 models, confirming the exhaust TSB was completed is as important as oil change records.
Request dealer TSB completion record and full service history.
Est. cost: n/aSource: AutoVetting editorial
NHTSA Recalls (verify completion via VIN)
TSB 17-0064
Severity: Critical
Exhaust fume intrusion via HVAC — CO exposure risk. Remedy: Dealer TSB repair (not mandatory recall — verify completion).
Independent pre-purchase inspection — we arrange it and walk you through the findings.
Send us the listing and we reply within 1 business day. Nothing due until we confirm a mechanic and a time. Piloting in Phoenix; other US metros by arrangement.
The Vetting Report: this VIN’s full recall status, known-failure cost ranges, negotiation talking points, and inspection priorities — delivered within 24 hours.