Cleaning fabric seats and door upholstery of car interior :
There are number of upholstery cleaning agents available. Here I used the Turtle Wax® upholstery cleaner, but other products can work as well.
The first step, spray the cleaner evenly on the upholstery.
Rub vigorously. Once the dirty spot is gone, wipe it thoroughly with a dry soft cloth.
The dirty spot is gone. You can clean all the seats and door upholstery the same way, working one area at the time. If you don't have a special upholstery cleaner, a regular laundry detergent will work as well: Mix a small amount of the detergent with warm water. Dip a clean cloth into it. Squeeze out well - you want a barely moist cloth. Work harder on dirty areas. When finished, wipe out well with a clean, soft dry cloth.
