Add-ons are where a AED 50–70 booking quietly becomes a AED 130–150 invoice, so it pays to know which ones deliver. Interior steam sanitisation — hot vapour over seats, belts, touchpoints and vents — is genuinely useful for family cars and anything recovering from a spilled laban. Expect AED 50–120 as an add-on depending on car size, and an extra thirty to forty-five minutes. You are paying for dwell time and heat; a two-minute fragrance spray is not sanitisation.
Other add-ons sort into tiers. Worth it periodically: engine bay steam cleaning at AED 40–80 (a few times a year, and only by steam — never pressure-washed electricals), pet-hair removal, and AC vent steaming if the cabin smells musty. Worth it occasionally: a spray sealant at AED 20–60 every month or two — the product cannot build meaningful protection weekly, so paying for it weekly buys the same dirham of protection twice. Mostly skippable at wash prices: tyre shine (lasts days), dashboard silicone dressing (attracts dust, so the car looks dirty faster), and perfume options.