What's the maintenance difference between front-load and top-load washers?
Front-loaders need more frequent gasket and drain-filter cleaning because the horizontal drum orientation and tighter door seal trap moisture. Top-loaders are more forgiving but should still get a monthly clean cycle and have their agitator or impeller wiped quarterly. Front-loaders reward discipline; top-loaders are forgiving but shorter-lived.
Front-loaders: wipe the door gasket after every wash, pull back the folds weekly, run a clean cycle monthly, clean the drain-pump filter quarterly, leave the door ajar between uses. Biofilm is the #1 issue — but if you stay on top of it, a good front-loader lasts 10+ years and cleans significantly better with less water and detergent.
Top-loaders: monthly clean cycle, wipe the bleach and fabric-softener dispensers, keep the lid open for an hour after each wash to let the drum dry. Top-loaders have far less gasket surface area, so odor is less common. Trade-off: they're typically 7–10 years of expected life versus 10–12 for front-loaders, and they use more water per load.
Both benefit from: level installation (imbalance shortens bearings), not overloading, HE-appropriate detergent dosing, and a clean vent on the companion dryer (a restricted vent sends extra heat and humidity back into the laundry area).
Manufacturer resources
Official support pages for brands commonly referenced in this answer.