The Fusion splits cleanly into winners and losers depending on what's under the hood. The naturally aspirated 2.5L is a quarter-million-mile workhorse that owners genuinely love, and the hybrid drivetrain with its Aisin eCVT is equally bulletproof while delivering 40+ MPG in the city. But the 1.5L and 2.0L EcoBoost engines from 2013 through most of 2019 have a coolant intrusion defect that kills engines between 60k and 100k miles, not a rumor, a documented pattern across dozens of independent owners. Ford fixed it late in 2019, but those earlier turbo models are landmines unless the engine's already been replaced. If you're shopping used, check the engine code before you check the CarFax. Buy the 2.5L or hybrid and you'll understand why some owners hit 250k miles and post about it. Buy a pre-2020 turbo and you're gambling with a motor that has a known expiration date.
The Ioniq 6 is a genuinely impressive efficiency champion, real-world 300+ miles on the big battery, 18-minute fast charging, and a ride quality that punches above its used-market price of $24-29k. The deal-breaker you must accept: the ICCU can fail without warning and strand you completely, even on 2025-2026 models, despite Hyundai's extended warranty covering the repair itself. The warranty means you won't pay for the fix, but it won't prevent the tow truck. Buy this if you have backup transportation or work from home; skip it if you're a single-car household or can't afford an unexpected stranding.