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 Focus is Ford's compact that splits into two completely different ownership experiences depending on what's bolted to the engine. The 2012-2018 PowerShift dual-clutch automatic fails so reliably that owners budget for multiple $2,000 transmission replacements, and the 1.0L EcoBoost's wet timing belt sits in hot oil degrading toward catastrophic engine failure every 60-80k miles. Manual transmission models across all generations are a different story, scrappy, fun to drive, and genuinely durable, with the 2000-2011 cars earning particular loyalty for hitting 200k+ miles on basic maintenance. Buy a manual from any era and you'll likely be fine; buy a 2012-2018 automatic and you're inheriting someone else's repair bills.