3.5L EcoBoost cam phaser rattle / timing components on cold start.
- Typically appears
- 60,000+ miles
- What to inspect
- Cold-start the truck and listen for a rattle in the first few seconds.

A 2020 Ford F-150 is now 6 years old, so an average example has covered around 81,000 miles. The final model year of the generation · generally the most sorted build, so mileage, servicing and condition matter more than build-year faults. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2020 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
The 2020 Ford F-150 is 6 years old, so an average example has covered roughly 81,000 miles. At that mileage 2 of the documented faults are already due, so check those first.
Documented onset mileage is at or below the ~81k miles an average 2020 car has covered.
3.5L EcoBoost cam phaser rattle / timing components on cold start.
3.5L EcoBoost internal water pump — a failure can leak coolant into the engine.
Age, electronics and build-related issues that are not mileage-driven.
10-speed automatic harsh or erratic shifts.
Aluminum panel corrosion / dissimilar-metal reactions at fasteners.
Generate a tickable pre-purchase checklist for this exact year, mileage and variant · add photos and notes as you inspect.
Check this exact carThe 5.0L V8 and 3.5L EcoBoost are both strong; the EcoBoost needs cam-phaser and water-pump attention with age.
Many are fine, but some shift harshly; a test-drive and fluid check are essential.
The aluminum won't rust like steel, but watch for corrosion where dissimilar metals meet.