The Elantra is a compact that split its reputation clean in half at 2021, before that line, you're shopping engines that seize and cars thieves steal with USB cables; after it, you're getting a genuinely competitive sedan with sharp looks and a warranty that backs the turnaround. The 2021-up cars deliver on value and the hybrid hits 40+ mpg without trying, but pre-2021 models carry catastrophic engine failure risk (Theta II bearing seizures, oil consumption) and the 2017-2021s remain theft-prone even post-recall. Buy 2021 or newer if the price works and you want modern features without the baggage; anything older is a gamble best left to someone else.
Two generations, two completely different stories. The 2007-2018 Altimas earned their brutal street reputation with CVT transmissions that failed around 100k miles even with proper maintenance, steering column locks that stranded owners in parking lots for $900, and dashboards that melted in the sun while Nissan looked the other way. The 2019+ redesign fixed the catastrophic mechanical issues and added segment-rare AWD, but arrives so damaged by its predecessors that resale value craters and nobody trusts the nameplate. Nissan's decade of subprime financing flooded roads with neglected examples driven into the ground, turning 'Altima driver' into a cultural punchline that obscures the current car's actual competence. Pre-2007 models with the VQ V6 and traditional automatics are legitimately durable. Anything 2007-2018 is a transmission time bomb. The 2019+ is a rational midsize sedan at a discount, but you're buying a car everyone assumes is terrible, plan on keeping it forever because resale is punishing.