Model years to avoid
These specific Ford F-150 years have documented, expensive, and repeat failures. If a car is priced too good to be true in these windows, this is why.
Two-piece spark plugs on the 5.4L 3-valve break off in the head during removal; cam-phaser rattle at idle is nearly universal past 100k miles.
First-gen 3.5L EcoBoost intercooler condensation causes cold-weather misfires and shudder under boost. Timing-chain stretch after 100k.
First model years of the 10R80 10-speed automatic — hard shifts, shuddering, and premature wear. Ford issued multiple TSBs and a class-action settlement covers some cars.
Years worth buying
Aluminum body debut is well-sorted, still uses the proven 6R80 6-speed automatic, and the second-gen 3.5L EcoBoost is stronger.
10R80 gets updated valve body and calibration; most complaints drop off. 5.0L Coyote V8 is bulletproof in this window.
New platform, improved 10-speed software, hybrid PowerBoost option. Verify no CHIP-era assembly quality complaints on the specific VIN.
What to check on the test drive
- On any 5.4L 3V, ask if the plugs have been replaced with the one-piece Motorcraft SP-546 (a real fix) — if not, budget for it.
- On 2017–2018 10-speed trucks, drive at 40 mph and let it downshift 3-2 — hard clunks or shudder are the class-action symptoms.
- On EcoBoost trucks, pull the intercooler drain plug or listen for a stumble on cold, humid mornings.
Before you sign anything
Repair-cost estimates in this guide are U.S. shop averages — regional labor rates and dealership markups can push them 30–50% higher. If a seller drops the price by "just $500" because of a known issue on this list, the math almost never works in your favor.
Driveline's 20-minute inspection checklist catches most of these problems on the lot, and the free pre-purchase check pulls open recalls and complaint history by VIN so you know exactly what you're walking into.