The short answer: a 20% discount is cheaper, but a free wash motivates more
At a 25 SAR ticket price with roughly 7 SAR in margin cost, giving away a fully free wash costs about 7 SAR — the wash's own cost of water, soap, and labor, not the full ticket price. A 20% discount on that same visit costs about 5 SAR in forgone margin, making it the cheaper reward on paper. In practice, most car washes still choose the free wash, because a stamp card building toward something free is a stronger habit-forming reward than a recurring percentage off.
The two rewards live on different card types on Waya: a free wash is naturally a stamp card reward, while a percentage discount fits a discount card, available on Growth and Premium.
Comparing the two rewards directly
Laid out side by side, the roughly 2 SAR gap between the two reward types is smaller than most owners assume before running the numbers.
| Reward type | Customer-facing value | Cost to the wash | Card type |
|---|---|---|---|
| Free wash (stamp reward) | 25 SAR wash, no charge | ~7 SAR (margin cost) | Stamp card |
| 20% discount | 5 SAR off a 25 SAR wash | ~5 SAR (forgone margin) | Discount card |
| No reward (baseline) | 0 SAR | 0 SAR | N/A |
Why the cheaper option isn't always the better one
A discount card gives the customer something every visit, which feels less special over time and rarely changes behavior on its own — it's a small, constant nudge rather than a goal to work toward. A stamp card's free wash is a single, visible milestone: the customer can see exactly how many stamps are left, and reaching the reward feels like an accomplishment rather than a routine markdown.
For a car wash specifically, where visits are frequent and the ticket price is modest, the psychological pull of "one more visit until it's free" tends to outweigh the roughly 2 SAR margin difference between the two reward types.
When a discount card makes more sense than a free wash
A handful of situations flip the usual recommendation, favoring the discount card's steadier, lower-cost structure over a stamp card's milestone reward.
- Tiered pricing where a flat free wash would over-reward customers on the cheapest tier
- A wash wanting a steady, ongoing incentive rather than a milestone reward
- A campaign-style promotion (e.g. a National Day discount) rather than an ongoing loyalty mechanic
- Customers who visit too infrequently for a stamp threshold to ever feel reachable
Working out your own numbers
Four steps translate your own ticket price and margin into a direct cost comparison between the two reward types.
- Estimate your margin cost per wash
Subtract water, soap, and labor from your ticket price to get true cost, not just revenue given up.
- Calculate the free-wash cost
That margin cost is what a fully free wash actually costs you, not the full ticket price.
- Calculate the discount cost
Multiply your discount percentage by the ticket price to get the forgone-margin cost of a discount reward.
- Compare the gap against reward psychology
If the gap is small (a few SAR), let motivation and habit-forming strength decide, not cost alone.
Testing both on the Free plan
The Free plan supports one stamp card at 0 SAR, which is enough to test a free-wash reward with up to 100 customers before paying anything. Testing a discount card requires Growth or Premium, since discount cards are a paid-plan feature — a wash curious about both should validate the stamp threshold first on Free, then compare against a discount card once upgraded.
A scanning note that applies to either reward
Whether the reward is a free wash or a discount, it only ever triggers off a staff scan — Waya has no POS or till integration, so there's no automatic tracking at the till either way. There's also no SMS channel; the reward-redeemed message for either card type goes to the wallet lock screen.
Frequently asked questions
Is a free wash more expensive than a discount for a car wash?
Slightly. A fully free wash costs roughly the margin cost of the wash itself, about 7 SAR at a 25 SAR ticket price, versus about 5 SAR in forgone margin for an equivalent 20% discount.
Why do most car washes still choose a free wash over a discount?
A free wash acts as a visible milestone on a stamp card, which tends to motivate repeat visits more effectively than a recurring percentage discount, even though it costs slightly more in margin.
Can I offer a discount card on the Free plan?
No. Discount cards are available on Growth and Premium; the Free plan supports one stamp card, which suits a free-wash reward rather than a percentage discount.
When should a car wash use a discount card instead of a stamp card?
When pricing is tiered enough that a flat free wash would over-reward the cheapest service, or when running a one-off promotional discount rather than an ongoing loyalty mechanic.
Does either reward type get tracked automatically at checkout?
No. Waya has no POS or till integration, so a staff member scans the customer's card on an ordinary phone to add a stamp or apply a discount either way.