Ford Explorer 6

2.3L turbocharged four-cylinder EcoBoost. Makes 280 hp in Explorer V (2016-2019), 300 hp in Explorer VI (2020+), and 270 hp in Ranger (2019-2024). Head gasket remains the primary concern — Ford redesigned the block in 2020, replacing open coolant slots with drilled passages. Ranger applications are less affected than early Mustang/Focus RS blocks. Check intake valve carbon deposits every 50,000-60,000 miles.

• !! Head gasket failure from 60,000 km

  The most common and expensive 2.3L EcoBoost failure. The slotted groove block design (2015-2019) gives the head gasket insufficient sealing surface. Ford redesigned the block for 2020 with cross-drilled passages — failure rate dropped significantly.

  Symptoms: Engine overheating, rapid coolant loss without visible leaks, white exhaust smoke, bubbling in coolant reservoir.
  5,000–8,000 $
  Ad Ford 2.3 EcoBoost head gasketlong block 2.3 EcoBoostBU5Z-9F972-B sensor
• !! Turbo wastegate failure from 80,000 km

  Wastegate clip or mechanism fails, boost pressure is no longer properly regulated. Can cause overboosting or power loss. Ford TSBs 16-0121 and 16-0122 address the problem.

  Symptoms: Boost fluctuations, boost pressure warning, power loss under load, metallic rattling from turbo area.
  1,200–2,500 $
  Ad Ford 2.3 EcoBoost wastegateturbocharger 2.3 EcoBoost ExplorerTSB 16-0121 wastegate
• !! Intake valve carbon deposits from 60,000 km

  Direct injection leads to carbon buildup on intake valves. Ford does not recommend scheduled cleaning, but deposits become noticeable at 40,000-60,000 miles. Walnut blasting costs $400-$800 and restores full performance.

  Symptoms: Gradual power loss, rough idle, increased fuel consumption, occasional stumble at low load.
  400–800 $
  Ad walnut blasting Ford 2.3 EcoBoostcarbon cleaning 2.3 EcoBoost intake

+ 1 more engine weaknesses + vehicle weaknesses

3.0L V6 Turbo 2956cc. Engine code BQWA. Plug-in hybrid in the Explorer VI. System output 457 hp (336 kW), combustion engine alone 349 hp (257 kW). Europe-only as PHEV.

• !! Twin-Turbo System Wear from 140,000 km

  The 3.0 EcoBoost V6 BQWA uses two turbochargers that wear quickly in poor oil conditions or at long service intervals. Oil changes every 10,000 km are critical for turbo longevity.

  Symptoms: Boost pressure fluctuations, whistling from one or both turbos, bluish smoke
  2,000–5,000 $
  Ad Ford 3.0 EcoBoost V6 turbocharger BQWAFord Mondeo Vignale 3.0 EcoBoost twin turbo
• !! DPF and Injector Combined Failure from 100,000 km

  According to a Ford TSB, when Continental injectors are damaged, the DPF and injectors must be replaced together. Replacing only the DPF leads to renewed filter damage from contaminated injection.

  Symptoms: DPF completely blocked, black exhaust smoke, increased fuel consumption, check engine light.
  2,000–4,500 $
  Ad DPF 2.0 EcoBlue Mondeofuel injector Ford Mondeo 2.0 EcoBlue
• !! Head Gasket Failed — Coolant Loss from 60,000 km

  The 1.5 EcoBoost (Focus, Kuga from 2014) shows a concentration of head gasket failures from a design-related weak point: narrow coolant passages between cylinders increase thermal stress on the gasket.

  Symptoms: Dropping coolant without visible leak, overpressure in coolant reservoir, white exhaust smoke with coolant smell, temperature gauge spike
  800–2,500 $
  Ad cylinder head gasket Ford 1.5 EcoBoost YVDA Y5DCcylinder head gasket Ford Focus Kuga 1.5 GTDIcoolant pump Ford 1.5 EcoBoost

+ 4 more engine weaknesses + vehicle weaknesses

3.3L V6 Cyclone with integrated electric motor and 1.5 kWh lithium-ion battery. Combined output 318 hp (237 kW). Self-charging full hybrid, no plug-in. Shares the internal water pump design of all Cyclone V6 engines — watch for coolant loss at high mileage. Separate cooling loops for engine, battery, and power electronics.

• !! Internal water pump (Cyclone design) from 100,000 km

  The 3.3L V6 hybrid shares the Cyclone base design with its internally mounted water pump. Additional complexity from three separate cooling loops (engine, battery, power electronics). Failure of one electric pump can cause overheating.

  Symptoms: Coolant loss, overheating warning, reduced hybrid system performance.
  1,500–3,000 $
  Ad Ford Explorer Hybrid water pump 3.3coolant pump Explorer Hybrid
• !! Hybrid battery degradation from 80,000 km

  The 1.5 kWh battery undergoes multiple charge-discharge cycles per trip. Noticeable capacity loss around 50,000 miles — city fuel economy drops from 27 to 22-24 MPG. Expected battery lifespan around 120,000 miles before replacement.

  Symptoms: Rising fuel consumption, shorter electric driving portions, hybrid system warning on dashboard.
  2,000–5,000 $
  Ad Ford Explorer Hybrid batteryExplorer Hybrid battery pack 1.5 kWh
• !! Timing chain wear at high mileage from 160,000 km

  Around 100,000 miles the 3.3L V6 timing chain can show wear. Rattle on startup, risk of skipping at extreme wear. Inspection interval from 100,000 miles, replacement recommended by 150,000 miles.

  Symptoms: Rattle on cold start, rough running, check engine light.
  1,500–4,000 $
  Ad timing chain Ford 3.3 V6timing chain Ford 3.3 Cyclone hybrid

3.0L V6 Turbo 2956cc. Engine code BQWA. Plug-in hybrid in the Explorer VI. System output 457 hp (336 kW), combustion engine alone 349 hp (257 kW). Europe-only as PHEV.

• !! Twin-Turbo System Wear from 140,000 km

  The 3.0 EcoBoost V6 BQWA uses two turbochargers that wear quickly in poor oil conditions or at long service intervals. Oil changes every 10,000 km are critical for turbo longevity.

  Symptoms: Boost pressure fluctuations, whistling from one or both turbos, bluish smoke
  2,000–5,000 $
  Ad Ford 3.0 EcoBoost V6 turbocharger BQWAFord Mondeo Vignale 3.0 EcoBoost twin turbo
• !! DPF and Injector Combined Failure from 100,000 km

  According to a Ford TSB, when Continental injectors are damaged, the DPF and injectors must be replaced together. Replacing only the DPF leads to renewed filter damage from contaminated injection.

  Symptoms: DPF completely blocked, black exhaust smoke, increased fuel consumption, check engine light.
  2,000–4,500 $
  Ad DPF 2.0 EcoBlue Mondeofuel injector Ford Mondeo 2.0 EcoBlue
• !! Head Gasket Failed — Coolant Loss from 60,000 km

  The 1.5 EcoBoost (Focus, Kuga from 2014) shows a concentration of head gasket failures from a design-related weak point: narrow coolant passages between cylinders increase thermal stress on the gasket.

  Symptoms: Dropping coolant without visible leak, overpressure in coolant reservoir, white exhaust smoke with coolant smell, temperature gauge spike
  800–2,500 $
  Ad cylinder head gasket Ford 1.5 EcoBoost YVDA Y5DCcylinder head gasket Ford Focus Kuga 1.5 GTDIcoolant pump Ford 1.5 EcoBoost

+ 4 more engine weaknesses + vehicle weaknesses