Gas lawn mowers require regular maintenance. A gas lawn mower tune-up means changing the oil, air filter and spark plug. Plan on spending about half an hour doing so at least once a season.
Cordless mowers need a fresh battery every few years. Proper battery upkeep will extend the life of your rechargeable battery, but plan on buying a new battery every three to five years. Add this to your long-term cost estimates.
Mulch, discharge or bag? Mowers can send clippings out the side or out the back, or can mulch clippings by churning them within the mower's dome until they are cut down to tiny pieces. Some mowers can deal with clippings in any of these ways, depending on owner preference, and these offer the most flexibility. All but the cheapest mowers give you the option of collecting clippings in a bag as well (either side or rear mounted), but the bag may be an extra-cost optional accessory.
Ergonomics matter. An excellent cut is a must, of course, but even modest mowers can cut a lawn well enough to please all but the pickiest homeowners. However, ergonomic factors go a long way toward making your mowing experience more pleasant. Nice features include easy one-lever controls to raise and lower the deck. Lesser, cheaper mowers may require you to raise and lower each wheel individually. Most mowers can mulch or change which way you direct clippings, but better models let you make the choice with a flip of a switch, rather than via mechanical means that require the use of tools.
Consider your property. If you have a small, level plot, a gas or electric push mower, or even a reel mower, should serve fine. For big properties, especially one with slopes, your back will thank you if you opt for a self-propelled model (or a lawn tractor, which we cover in a separate report). If your land is a bit rugged, a model with larger rear wheels is worth considering, though these mowers suffer a little when it comes to overall handling.
Shop around for the best price. Lawn mower prices can fluctuate quite a bit among stores. If you decide to buy online, make sure there's a reputable service center nearby for possible warranty issues. Be aware that some makers may not honor their warranty if you purchase your mower from anyone but an authorized seller. Check the manufacturer's web site for its policies, and a list of authorized Internet and local dealers.