Driveways should be cleaned at least several times a year from all forms of aggregate (sand, gravel and rock). This will prevent abrasive materials from wearing your pavement faster than normal. That is one of the reasons you see the city streets being swept.
Driveways should be repaired as stressed areas (cracked alligated pavement) and potholes appear. Do this as soon as possible, before they turn into major repairs. A failed area of 10×10 is 100 square feet. If it grows to an area of 12×12 that is 144 square feet it is a 44% increase of the square footage. The longer you wait the more it will cost you. For temporary repairs you can use cold patch that can be found at any Home Depot, Lowes and many other hardware stores.
All larger cracks in the driveway should be cleaned and sealed with a rubberized crack sealant. Either a contractor can do it with a hot pour rubberized crack sealant or you can do it yourself with an easy-to-use rubberized asphalt emulsion crack sealer that is perfect for filling cracks up to 3/4″ in width. You can find it at Home Depot, Lowes and many other hardware stores.
Driveways should be seal coated every 3 to 4 years depending on the weather and the amount of traffic. Do not seal coat every year. Some of benefits of seal coating are providing a wearing surface, resisting water and fuel penetration, stopping oxidation and improving appearance. Either a contractor can do it with a commercial grade sealer or you can do it yourself. You can find an emulsion sealer at any Home Depot, Lowes and many other hardware stores.
Weeds and grasses sometimes grow next to the edges of your driveway, in cracks, or where your driveway abuts other structures such as your garage floor or sidewalk. A dandelion has approximately 2000 pounds of upward pressure per square inch, and can easily push through your asphalt. When you see any vegetation in those areas you should spray them with an herbicide such as Round Up, or any weed and grass killer.
Petroleum and Chemical Spills
Gasoline, diesel, oil, or any petroleum product can be damaging to your driveway. A concentrated amount can eat through the surface causing it to soften and deteriorate the pavement over a period of time. If any is spilled you can minimize/prevent this by using an oil dry floor absorbent or kitty litter. This will aid in soaking up the spill and should be applied as soon as possible.