Interior vs. Exterior Detailing — What’s the Difference and Which Do You Need?
Interior detailing cleans everything inside your car: seats, carpets, dashboard, vents, and windows. Exterior detailing focuses on the outside: paint, wheels, glass, and trim. If your car smells, has stains, or looks grimy inside, you need an interior detail. If the paint looks dull, scratched, or dirty from the outside, you need an exterior service. And if both are a mess, a combo package is the smarter buy.
That’s the short answer. But choosing the right service means understanding what each one actually does and what you’re paying for.
What Is Interior Detailing?
Interior detailing is a deep clean of everything inside your vehicle. This isn’t a quick vacuum. A professional interior detail includes vacuuming all surfaces, cleaning and conditioning the dashboard and door panels, wiping down cup holders, air vents, and console areas, cleaning windows from the inside, and treating leather or fabric surfaces to remove stains.
At Derek’s Auto Detail in Seattle, interior services start at $134 for a standard interior detail. If your seats or carpets have set-in stains, pet hair, or odor issues, the Interior Complete + Shampoo starts at $199 and includes hot water extraction for carpets and upholstery. That’s the one you want if kids or dogs have been in the car regularly.
Pet hair removal is also available as an add-on. If you’ve ever tried to get pet hair out of car fabric yourself, you already know why that service exists.
Interior detailing takes longer than most people expect. A thorough job on a standard sedan can take 3
to 5 hours. Vehicles with heavy buildup, large SUVs, or third-row seating take longer. The time is worth it because a properly cleaned interior removes allergens, bacteria, and odors that simple cleaning products can’t touch.
Interior detailing is the right call if your car smells musty, like food, or like pets. Also if the carpets or seats have visible stains, the dashboard is sticky or grimy, you’re selling or trading in the ve
hicle, or you haven’t had a professional interior clean in 12 or more months.
What Is Exterior Detailing?
Exterior detailing covers everything on the outside of the car. At its core, this means a thorough hand wash, drying, and attention to wheels, tires, and trim. Professional exterior services go well beyond a standard car wash. They address paint contamination, water spots, oxidation, and surface imperfections that automatic car washes can’t fix and often make worse.
At Derek’s Auto Detail, exterior services break down like this.
A Hand Car Wash and Vac starts at $49. That’s the baseline service and a real step above any drive-through wash. Your car is cleaned by hand, which means no brushes dragging grit across your paint.
An Exterior Wax starts at $99. This adds a protective layer over the paint after the wash. It’s what gives your car that deep shine and protects against UV damage, bird droppings, and light water spotting. If your car looks dull even after washing, oxidation may have built up in the clear coat, and wax helps restore and protect that.
Paint Correction starts at $299. This is for vehicles with swirl marks, light scratches, or heavy oxidation. It’s a multi-step process using machine polishing to remove surface imperfections from the clear coat. Not every car needs it, but when it’s needed, nothing else comes close to the results.
Headlight Restoration starts at $79. If your headlights look foggy or yellowed, this service makes a noticeable difference in both appearance and nighttime visibility.
Exterior detailing is the right call if your paint looks dull, hazy, or has swirl marks. Also if the car has water spots or environmental fallout on the surface, you want to protect the paint with a wax coating, your headlights are foggy or yellowed, or the vehicle sits outside and hasn’t been professionally washed in months.
