Several sources, like J.D. Power and Consumer Reports, track vehicle reliability. However, their findings often show a close competition between the F-150 and Silverado, with rankings fluctuating from year to year. One might rank higher one year, and the other the next. Neither consistently outperforms the other in terms of overall repair frequency.
To get the most accurate picture, you should look at the specific model year you're considering and consult several independent reliability reports (like those mentioned above) for that particular year and trim level.