A few honest questions before you book anyone — including us.
Mobile detailing has grown fast in Austin, which is good for customers but makes it harder to tell a genuinely good operator from someone with a pressure washer and an Instagram account. A few questions cut through most of that quickly.
This is the single most overlooked question, and it matters more in Austin than most places. Regular tap or hose water here carries roughly 250 PPM of dissolved minerals, which dry into visible spots on dark paint, especially in direct sun. A detailer using an RO/DI (reverse osmosis / deionization) system rinses at or near 0 PPM, so nothing is left behind to spot. If a detailer can't tell you plainly what water source they use, assume it's whatever's available at your house — which defeats part of the purpose of paying for a wash.
A detailer confident in their work will let you inspect it before you pay. One that requires payment upfront or a deposit before starting is asking you to trust the outcome before you've seen any of it. Neither approach is illegal or automatically shady, but "pay after you've walked the car" is a meaningfully lower-risk arrangement for you as the customer, and it's worth asking about directly if it isn't already advertised.
A handful of five-star reviews with no detail ("great job!") tells you less than a smaller number of reviews that mention specifics — a vehicle type, a particular problem solved, how long the visit took. Volume matters too: a business with 200+ reviews sitting at 4.9 stars has a much larger sample size to judge than one with a dozen reviews from the last two months.
Flat, published pricing by vehicle size (not "starting at" with everything else quoted on arrival) is a good sign that you won't hit surprise add-on fees once the detailer is standing in your driveway. If a business won't publish a number without a phone call first, that's not automatically a red flag, but it does mean you're negotiating blind.
A genuinely mobile operation carries its own water, power, and equipment and needs nothing from your house beyond space to park. If a "mobile" detailer asks to run an extension cord to your garage or use your hose, they're only partially mobile — and in Austin specifically, using your hose water usually means giving up the spot-free rinse that's the whole point of a proper detail.
Not necessarily — price often reflects overhead and marketing as much as quality. The water source, payment terms, and review substance are better signals than price alone.
Not automatically, but weigh it accordingly — a newer business hasn't had the same chance to prove consistency, so ask more direct questions about process (water source, equipment, payment terms) rather than relying on review volume.
0 PPM RO/DI water on every visit, flat published pricing by vehicle size, payment only after you've inspected the work, and a fully self-contained rig that needs nothing from your house — plus 200+ Google reviews at 4.9 stars.