If you want a Tahoe that'll outlive your mortgage, hunt down a 2000-2006 GMT800, the last generation before GM added Active Fuel Management and turned oil consumption into a lifestyle. Those trucks routinely hit 250k miles with just a transmission rebuild somewhere past 150k. Everything from 2007 forward carries the AFM lifter time bomb: one collapsed lifter means a $5,000 engine teardown, and the 6L80/8L90 transmissions fail even when you do everything right. The 2021 redesign rides better and looks sharper, but dealership techs report transmission replacements at 1,400 miles, and GM's killing CarPlay in 2026, locking you into their buggy infotainment forever. Buy a GMT800 if you want peace of mind, or budget for an AFM delete the day you sign. Skip this if you want a full-size SUV that doesn't require a maintenance prayer circle.
Ford's three-row workhorse splits into two distinct eras, and knowing which you're buying matters more than the badge. The 2013-2019 generation hides a ticking time bomb: the water pump lives behind the timing cover, turning what should be a $400 maintenance item into a $5,000 engine-out ordeal that replaces timing chains whether they're worn or not. The 2020 redesign fixed that engineering blunder but stumbled out of the gate, 2021 models left the factory missing sunroof drain tubes, flooding cabins and triggering $26k repair bills, while infotainment screens freeze mid-drive across the lineup. Police fleets rack up 300k miles through daily beatings, proving the bones can take punishment, but the third row stays cramped and cost-cut bushings needed a recall. If you need the space and can stomach Ford's quality control lottery, buy 2022 or newer. Otherwise, the Highlander costs the same and won't make you wonder what breaks next.