Generation matters more than mileage with this compact. The 2011-2015 models earned their troubled reputation through a cascade of PCV valve failures that pressurize the crankcase and blow oil past every seal in reach, valve covers, timing covers, turbo lines all start weeping, turning ownership into a parts-replacement cycle. Coolant systems corrode from the inside out when neglected, and by 100k miles repair bills often exceed resale value. The 2016-2019 redesign fixed most of these gremlins and delivers the comfortable, well-equipped compact GM should have built from the start, but those improved cars are scarce on used lots. Manual transmissions of any year hold up better than automatics. If you're shopping used, a 2017 with 80k miles is a safer bet than a 2013 with 50k, the generation gap is that wide. Skip the first-gen unless you enjoy wrenching or have a trusted mechanic on speed dial.
The Forte splits into two extremes: one owner hit 750,000 miles on a 2018 model with obsessive oil changes every 10-15k, while others watched their engines grenade under 100k following the manual's 5,000-mile intervals. The 2.0L and 2.4L Theta II engines carry documented rod bearing and oil dilution issues covered by class-action lawsuits, Kia replaces engines under warranty, but you're betting on whether yours lasts 30k or 700k. Ignition coils on 2016+ models arc to the block instead of firing, causing misfires until you swap in upgraded parts. Pre-2022 models face theft risk and insurance headaches despite 2022+ having immobilizers. Buy it if you're the type who keeps service records in a binder and changes oil early; skip it if you treat maintenance as optional.