DETROIT — The F-150 redesign that Ford Motor Co. plans to unveil this week isn't as risky as the switch to an aluminum body for the current generation. But the new pickup nonetheless will determine the automaker's fortunes in a segment that's increasingly volatile and soon to be invaded by electric vehicle makers.
The gamble Ford took in switching to a more expensive material on its most important vehicle has largely paid off, though perhaps less conspicuously than Ford had hoped.
Since the pickup was redesigned in 2014, sales, market share and average transaction prices have risen, and studies have shown that repair and insurance costs — a major question mark at launch — have largely remained flat. The rest of the industry, however, declined to follow Ford's aluminum gambit, choosing other routes to reduce weight and improve fuel efficiency.
Still, Ford sold more pickups in 2018 than any other year besides 2001 and 2004. It end…