Blast mats with the hose
When washing your car, drag out the rubber or carpet floor mats and blast them with the hose.This will dislodge dirt particles that, if allowed to build up, will grind holes in your mats. Let the mats dry thoroughly in the sun before reinstalling them.

Let floor mats take winter’s beating
Use floor mats to protect carpeting. The best type for controlling salt, slush, and mud in winter are rubber wafflestyle mats. They stay in place, don’t allow the water to seep through, and are easy to wash clean. Carpet-style mats are helpful, too. Shake, vacuum, or wash as needed; replace them as they wear through.

Clean the inside, too
Vacuum and sponge your interior every time you wash your car. Dirt particles are abrasive, and spilled liquids, such as soda, can be corrosive.Vacuum your interior thoroughly with a powerful vacuum (small cordless models are generally too weak). Use the appropriate wand heads when vacuuming. The bare metal wand can mar and scratch surfaces. Sponge vinyl surfaces clean with a solution of mild detergent and water.

For stubborn carpet or mat stains
After vacuuming floor mats or interior carpeting, apply foam rug cleaner to resistant stains as directed by the maker. Work the foam into a few square feet at a time, using a wet sponge or brush. Vacuum when dry.

Clean dash gauges carefully
Use a soft damp cloth to lightly wipe dust from the clear plastic lenses on your dashboard. Too much pressure will scratch them. Too many scratches can make it difficult to read your gauges under certain lighting conditions.