EngineHigh
3.5 EcoBoost cam phaser rattle on cold start.
- Typically appears
- 60,000+ miles
- What to inspect
- Listen for a metallic rattle for 1-3 seconds at cold start.
2021 Ford Expedition problems
A 2021 Ford Expedition is now 5 years old, so an average example has covered around 67,500 miles. A mid-run car · most launch faults had been addressed by this point, and wear items are the main risk at this age. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2021 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
Quick answer
The 2021 Ford Expedition is 5 years old, so an average example has covered roughly 67,500 miles. At that mileage 2 of the documented faults are already due, so check those first. A further 2 typically appear later in the car's life.
Turn these known faults into a step-by-step viewing plan for this exact Ford Expedition · $9.
Build the inspection planFaults a 2021 example has usually reached
Documented onset mileage is at or below the ~68k miles an average 2021 car has covered.
DrivetrainHigh
Metallic grinding noise from the front hubs caused by Integrated Wheel End (IWE) vacuum failure, leaving the hubs partially engaged.
- Typically appears
- 30,000-60,000 miles
- What to inspect
- Start the engine and engage 4H, then switch back to 2H. Listen closely for loud clicking or clunking from the front wheels, indicating a sticking or failing IWE actuator.
Faults that appear at any mileage
Age, electronics and build-related issues that are not mileage-driven.
TransmissionMedium
10-speed automatic harsh or delayed shifts.
- Typically appears
- Any
- What to inspect
- Feel for hard shifts through the range.
BrakesMedium
Brake booster faults triggering warnings.
- Typically appears
- Age-related
- What to inspect
- Test pedal feel and scan for codes.
BodyLow
Panoramic roof and power-fold seat faults.
- Typically appears
- Age-related
- What to inspect
- Cycle the roof and third-row seats.
Infotainment / ElectricalMedium
SYNC 3 or SYNC 4 touchscreen freezing, blacking out, or dropping Bluetooth connections due to APIM (Accessory Protocol Interface Module) failure.
- Typically appears
- 3-5 years
- What to inspect
- Start the vehicle and immediately test the touchscreen. Rapidly cycle through the navigation, climate, and audio menus, then engage reverse to check for reversing camera feed lag.
Faults still ahead of this car
Typically appear later than this year's average mileage · worth budgeting for rather than inspecting.
Engine / LubricationMedium
Oil leak from the engine sump due to failure of the factory plastic oil pan seal (highly common on 2018-2019 models).
- Typically appears
- 40,000-70,000 miles
- What to inspect
- Look underneath the vehicle just behind the front undertray. Shine a torch at the rear of the engine sump mating surface to check for fresh oil weeping or drips.
SuspensionMedium
Knocking over bumps or poor ride quality caused by prematurely leaking Continuously Controlled Damping (CCD) shock absorbers.
- Typically appears
- 50,000-80,000 miles
- What to inspect
- Turn the steering wheel to full lock. Shine a torch into the front wheel arches and visually inspect the shock absorber bodies for heavy fluid weeping or oily dirt build-up.
Inspecting a 2021 Ford Expedition?
Turn this car's known weak points into a step-by-step viewing plan · what to inspect, what a bad result means and what to ask the seller.
Build my inspection planFord Expedition · frequently asked questions
Is the Expedition reliable?
Generally, but listen for cam-phaser rattle on the 3.5 EcoBoost.
What is the cam phaser rattle?
A cold-start rattle from worn variable-valve-timing phasers; can be costly to fix.
Is it good for towing?
Yes — strong tow ratings; verify the tow package and transmission behaviour.
What fuel economy can be expected from the 3.5-litre EcoBoost?
Despite the EcoBoost badge, this is a heavy vehicle with a large twin-turbocharged V6. In real-world UK driving conditions, expect around 15 to 18 mpg around town and up to 24 mpg on a motorway run. Heavy acceleration or carrying a full load will significantly reduce these figures.
Are there any specific maintenance requirements for the twin-turbo system?
The 3.5-litre EcoBoost relies heavily on clean oil to lubricate the turbocharger bearings and timing chain components. It is highly recommended to shorten oil change intervals to every 5,000 miles rather than following the maximum manufacturer schedule. Always ensure high-quality, fully synthetic oil is used to prevent sludge build-up.
How do I verify the condition of the four-wheel-drive system?
The Expedition uses an Integrated Wheel End system that relies on vacuum pressure. To verify its condition, toggle between two-wheel drive and four-wheel drive whilst stationary. The transition should be seamless. Any metallic grinding noises from the front wheels during a test drive strongly indicate a vacuum leak or hub failure.
Other Expedition model years
Buying a Ford Expedition? Build a step-by-step viewing plan for this exact car · $9.
Build the plan