The Impala nameplate spans six decades and two entirely different missions: the '60s SS models are among the most beautiful American cars ever built, while the modern FWD sedan is a spacious, comfortable highway cruiser with a ticking clock under the hood. That clock is the 4T65e transmission, which fails with enough consistency that police fleets, high-mileage civilian owners, and forum threads all independently name it as the car's Achilles' heel, often giving out between 150k and 220k miles. If you're restoring a classic, you're buying into a legend with straightforward mechanicals and endless parts support. If you're shopping the 2000s-era FWD generations, budget for a transmission rebuild and you'll likely get your money's worth.
Toyota built this full-size sedan to outlast your mortgage, owners routinely push 300k, 400k, even 486k miles before anything critical breaks. It's a Camry stretched to Lexus proportions, sharing the ES platform but costing thousands less, and the hybrid models deliver shockingly good fuel economy (40+ mpg) for something this spacious. The catch: Toyota discontinued it after 2022, so you're shopping used-only, and the older generations that dominate owner forums come with age-related quirks like seal leaks and the infamous 2008 dashboard melt. If you want a highway cruiser that'll run forever and don't need the latest tech, this is one of the smartest used buys in the sedan graveyard, just budget for the fact that even Toyotas need parts when they hit drinking age.