How fast will 100 free customers fill up at a small car wash?

The short answer: about a week at busy volume

A busy car wash doing 60 cars a day, with roughly 1 in 4 customers agreeing to enroll, fills Waya's 100-customer Free plan cap in about 7 days. A quieter wash doing 20 cars a day at the same conversion rate takes closer to three weeks. Either way, most washes should expect the Free pilot to run out inside a month, not a quarter.

That speed is a feature, not a problem — it means a wash gets a fast, real read on enrollment and return-rate behavior before deciding whether Growth's 85 SAR a month is worth paying.

Fill-up speed at different daily volumes

Doubling daily car count roughly halves the days-to-100 figure, which makes fill-up speed one of the easier numbers on this page to estimate accurately from your own traffic.

Calculating your own fill-up speed

The same four-step formula applies regardless of how busy the wash is, so plug in your own daily count rather than borrowing the table above directly.

1. Estimate daily car count

   Use your own average, not a busy-day or slow-day outlier.

2. Estimate your sign-up conversion rate

   1 in 3 to 1 in 4 is typical when a cashier asks every customer consistently.

3. Multiply to get daily enrollments

   Daily cars x conversion rate = new enrollments per day.

4. Divide 100 by that daily figure

   100 / daily enrollments = estimated days until the Free cap is reached.

Why a fast fill-up is worth planning around, not avoiding

A wash that fills its Free pilot in a week has, in that same week, gathered a full week of scan data — enough to already see whether the scanning habit is holding at the till. That's valuable information gathered at zero cost, and it argues for deciding on the Growth upgrade before the pilot even starts, rather than being surprised when enrollments pause mid-launch.

The alternative — spacing out a marketing push to make the Free pilot last longer — usually isn't worth it. A slower, deliberately-throttled launch delays the point where you learn your real numbers without saving any meaningful money, since Growth is only 85 SAR a month either way.

What to have ready before the pilot starts

A short pre-launch checklist avoids the most common cause of a rushed, confusing first week: deciding things mid-pilot that should have been settled beforehand.

• A decision on Growth vs staying on Free a little longer, made before the fill-up date, not after
• The stamp threshold and card design finalized, since changing it mid-pilot confuses early customers
• Staff already trained on the scan habit, so the pilot week reflects steady-state behavior
• The welcome and win-back triggers turned on from day one, not added later

What happens the moment the cap is reached

New enrollment attempts simply stop being accepted at customer 100 — nothing about existing cards changes, and no data is lost. If Growth hasn't been switched on yet, the practical effect is a pause on new signups until you do, which is the main reason to plan the switch ahead of a fast-filling pilot rather than reacting to it.

A scanning caveat for reading your fill-up speed

Fill-up speed measures enrollment, not scanning discipline — a wash can fill 100 customers quickly while still under-scanning repeat visits, since Waya has no POS or till integration and stamps only add when staff scan the card. A fast pilot fill-up is good news for sign-up interest; it says nothing on its own about return rate, which needs separate attention once the pilot's over.