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 WRX splits opinion between those who want a practical AWD sedan with some punch and those chasing the rally-bred legend. The vertical touchscreen is a genuine annoyance, owners hate it, and if you're considering the CVT automatic, you're looking at the wrong car entirely. The manual is the only version that makes sense, but be realistic about stop-and-go commutes. As a first car for a 16-year-old? Terrible idea: the insurance alone will hurt, and 280+ horsepower is more than most new drivers can handle responsibly. For experienced drivers who need year-round capability and weekend fun, it's a solid choice, but the current generation has lost some of the raw character that made earlier versions cult favorites.