Drive-Thru Upgrade & Cash ROI Calculator
Simulate your restaurant's Cash-Per-Second (CPS), test different station upgrades, and find out exactly which upgrade yields the fastest return on investment (ROI).
Where these numbers come from
Drop rates, payout multipliers, station costs, world thresholds and luck behaviour are community-modelled estimates, not values published by DRAIN CCU Games. Vehicle names are generic examples, not real in-game names. Use these to compare options and direction, not as exact server numbers. Only the codes and the game identity are source-verified.
- • Game identity, place/universe id, creator and the World 4 title marker (Roblox public API)
- • Promo codes LUCK301 / BONUSCASH / WELCOME and the bottom-left Codes button (GameRant, Sep 15 2026, cross-checked against the official Discord)
- • Core loop: upgrade the drive-thru, roll supercars, serve customers for cash (official Roblox description)
- • Rarity naming Rare / Exotic / Cosmic (official Roblox description)
- • Gacha drop percentages per rarity
- • Cash payout multipliers per rarity
- • Station upgrade base costs and cost scaling
- • World unlock cash thresholds and station caps
- • Order/cook time constants used by the calculator
- • The luck-boost behaviour applied by the roll simulator
- • World names and the Common / Epic / Legendary tier labels
≈ $3.9K / minute
Active drive-thru lane throughput
Intercom: 5.7s + Grill: 7.3s
Upgrade Additional Serving Windows (Lvl 1 → 2)
Station Level Controls
Decreases queue arrival wait time.
Accelerates food preparation throughput.
Adds drinks and shakes to raise order price.
Capacity & Gacha Variables
Multiplier on concurrent cars served.
Higher car tiers multiply each customer ticket by up to 1,500x.
Upgrade ROI Comparison Matrix
Sorted by Payback Efficiency (modeled)| Station | Current Level | Upgrade Cost (est.) | New CPS | CPS Gain | Payback Time |
|---|---|---|---|---|---|
Order Intercom & Speaker order time falls each tier (modelled) | Lvl 5 | $442 | $67/s | +$2/s | 3.1m |
Commercial Burger Grill cooking time falls each tier (modelled) | Lvl 4 | $844 | $68/s | +$4/s | 3.7m |
Fountain Drink & Shake Dispenser ticket value rises each tier (modelled) | Lvl 2 | $775 | $77/s | +$13/s | 1.0m |
Additional Serving WindowsTop Pick +1 simultaneous serving lane (modelled) | Lvl 1 | $2.5K | $129/s | +$65/s | 39s |
The Math Behind Order Speed & ROI
Understanding why queue throughput dictates tycoon revenue.
Order Cycle Time Bottleneck
In Drive-Thru Empire, a car cannot leave the pickup window until both the Order Intercom time and Kitchen Grill prep time are complete. If your grill cooks in 1.5s but your speaker takes 6.0s, your throughput is artificially capped at 7.5 seconds per car.
Payback Period Rule
Our algorithm divides the upgrade cost by the resulting increase in CPS (Cost / ΔCPS). Any station with a payback time under 60 seconds should be purchased immediately to accelerate your compound growth curve.