Customers shopping for used Ford F-150 trucks should look for such typical issues as mileage, signs of wear, damage and owner history, but common complaints about the trucks include power windows not going up, engine clattering and motor knocking. As of 2015, the 2004 Ford F-150 has the most complaints.
Potential buyers should decide whether they need a 5.4-liter V8 engine or a 4.2-liter V6 engine. The V8 engine can handle heavy towing, while the V6 engine is lighter and more fuel efficient.
The most common complaint owners have about the 2004 Ford F-150 is the windows' tendency to not roll up, although the average cost to repair that problem is moderate, at around $300. Other common issues with this model include spark plugs breaking off, engine knocking and engine failure, all of which are costly to repair.
Some owners of the 2009 Ford F-150 have noticed its diesel engine beginning to clatter at low revolutions per minute at around 29,000 miles, an issue that costs around $7,000 to repair on average. Owners have noticed motor knocking occurring mainly on the 2005 model of the Ford F-150. This issue occurs after the odometer has reached 70,000 miles, and it costs more than $4,000 to repair on average.