Start with Part 1 then read Part 2 before continuing.
Clean vinyl/leather seats often
Use a special chemical agent to wipe grime and dust off your seats. Afterwards, use a rub-in conditioner to give them that shine. This process will help restore your seats' natural colour and will leave them looking like brand new.
Kill bad odors
You may not know it, but cars often smell like their drivers and the various foods they lug around town. Whether your car smells like cigarettes or fried chicken, it's unpleasant for passengers riding in your vehicle. Avoid using an air freshener, as this will only mask the problem. Instead, opt for a heavy-duty odour eliminating spray to kill bad scents on contact.
Give your windows a good scrub, a really good one!
Although your windows may look clear, chances are they're dirty because windows are always exposed to the outdoor elements. No point in having a clean car interior if your windows are grimy and full of fingerprints. Use Windex to get a streak-free shine and pay close attention to the window's edges!