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Customers who don't come back
An oil change is a repeat sale on a predictable schedule — but only if somebody knows when it's due and actually gets in touch. Most workshops just wait.
Auto Mobil Shop Oil Change · Parts · Accessories · Service
Every vehicle, every oil change, every rupee — on record.
Complete management software for auto workshops, oil-change centres and spare-parts shops in Pakistan. Bill at the counter, track each customer's vehicles and mileage, know when the next service is due, and send the reminder on WhatsApp yourself — instead of waiting for the customer to remember.
16Modules
8Report sections
178Automated tests
0Internet required
What it is
A workshop system, not a shop till with cars written on it
Auto Mobil Shop covers everything from a customer walk-in and an oil change, to parts sales, inventory control, purchases, returns, supplier ledgers, staff and full financial reports. It runs on your own computer over your own network — so a dropped internet connection never stops you billing.
The three leaks
What a workshop quietly loses every month
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Parts stock nobody can count
Hundreds of filters, oils and accessories across brands and grades. Without a real catalogue and stock movement trail, shrinkage is invisible and reordering is guesswork.
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A drawer that never quite tallies
Cash, JazzCash, bank transfer and credit sales all mixed together, with no opening float and no closing count — so a shortfall is discovered weeks later, if at all.
Core modules
What's inside Auto Mobil Shop
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POS & Oil Change
The screen your counter staff live on
- Live product searchType a name, code, brand or model and a dropdown appears instantly — so staff never hunt through categories with a customer waiting.
- Oil life calculatorPick the vehicle, enter current mileage, average daily running and the service interval, and the system works out the remaining oil life and the next service due — using the last recorded service reading, not a guess.
- Add the oil change to the cartThe calculated service goes onto the bill alongside the filters and parts, as one invoice.
- Customer and vehicle attachedEvery sale is tied to a customer and a specific vehicle, which is what makes service history and reminders possible.
- Split paymentOne bill settled across cash, JazzCash, bank transfer or credit in any combination — each row saved separately and shown on the receipt.
- Your own payment modesAdd whatever tenders you actually take; the system marks which ones are credit and reports accordingly.
- Hold & recall billsPark a bill while a car is on the ramp and pick it up later — saved in the database, so it survives even if the machine restarts.
- Customer history without leaving POSOpen a full-screen history of that customer's invoices, vehicles and dues — then hit back and your cart is exactly as you left it.
- Walk-in clientsA one-tap walk-in customer for the jobs that don't need a record.
- Thermal invoice printingPrinted straight from the counter, with your shop's header and footer.
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Customers & Vehicles
The asset most workshops never actually build
- Customer profilesContact details, GST information and a credit limit, with Pakistani phone numbers validated and normalised automatically however they're typed.
- Multiple vehicles per customerRegistration number, make and model — so one customer with three cars is one record, not three.
- Insurance & pollution expiryRecorded against each vehicle, giving you a second, entirely natural reason to make contact.
- Service history per vehicleEvery past job, the mileage at the time and what was fitted — so the next technician isn't guessing.
- Credit trackingWhat each customer owes, with payment collection recorded against the invoice.
- Bulk import from ExcelLoad your existing customer list in one go instead of typing it in.
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WhatsApp — Invoices & Service Reminders
The feature that turns a one-off job into a returning customer
- Send the invoice on WhatsAppStraight after the sale, as a message the customer keeps — a free receipt and a marketing touchpoint in one.
- Automatic service remindersBuilt from the mileage and interval you recorded, so you contact the customer before the oil is overdue, not after they've gone somewhere else.
- Fully customisable templatesWrite your own message wording once — the system fills in the details for each customer.
- Rich merge fieldsShop name, invoice number, date, customer name, vehicle number, mileage, subtotal, discount, total, paid, balance, due date, next service date, next service mileage, days remaining, shop phone and address.
- Delivery trackingMessages sent are logged, so you can see who was contacted and when.
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Inventory & Parts Catalogue
Built for a parts business, not a grocery shelf
- Categories, brands, grades and unitsFour separate dimensions, because engine oil genuinely needs a brand and a grade — and an air filter needs a model.
- Oil and service categories flaggedCategories can be marked as oil or as non-stock services, so the system treats them correctly on the bill and in reports.
- Purchase, selling and MRP pricingThree price points per product, with min and max stock levels.
- Serial number trackingFor items where the individual unit matters.
- Stock movement audit trailEvery in and out recorded, with manual stock adjustment for reconciliation after a physical count.
- Low stock alertsOn the dashboard, with a live count of what needs reordering.
- Waste & damage registerLog what's broken or written off, so shrinkage becomes a number instead of a mystery.
- Excel import & exportLoad a full catalogue in bulk and export it back out whenever you need it.
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Cash Drawer & Register Control
The discipline that makes the day's cash actually tally
- Drawer must be opened before billingNo sale can be made outside a session, so nothing ever falls outside the day's cash accounting.
- Opening float recordedWhoever opens the drawer, and with how much, is on record.
- Close is blocked until it's reconciledThe register cannot be closed without going through the count.
- Cash flow reportTwo views — a cash-only summary for the money physically in the drawer, and a complete report covering every payment mode.
- Register reportEvery session with opening cash, total sales, cash sales, credit sales, expenses, expected cash in hand, actual counted cash and the difference — colour-coded for short or over, with who opened and who closed it.
- Drill into any dayDouble-click a session to open that day's full cash flow report.
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Purchases, Suppliers & Expenses
The other half of your margin
- Purchase order workflowDraft → Approved → Received, so ordering is a process rather than a phone call nobody wrote down.
- Supplier invoices & returnsRecord what came in and what went back, with stock and the supplier's account both adjusting.
- Supplier ledger & balancesA running balance of what you owe, with payment terms and payment records per supplier.
- Supplier-specific pricingBecause the same filter costs different money from different suppliers.
- Expense tracking by categorySalaries, rent, meals, utilities, transport, maintenance and your own categories — all feeding the profit & loss.
- Financial ledgerBalance history across customers, suppliers and expenses in one place.
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Reports & Audit
Eight report sections, plus a complete action log
- Sales reportTotal sales, transaction count, average ticket, and the split between cash, credit and card/bank — plus sales by category with a drill-down into the products inside each one.
- Financial reportSale revenue, purchases, returns, waste cost, expenses and net profit with a margin percentage — alongside a proper Profit & Loss statement using weighted-average cost of sales.
- Stock, inventory & purchase reportsWhat you hold, what it's worth, what moved and what you bought.
- Customer & supplier reportsWho buys what, who owes what, and who you owe.
- Service reportsVehicle service history and upcoming service due lists.
- Complete audit logEvery login, sale, edit and delete recorded with user, module, record and timestamp — filterable by date, user, action and module, and exportable to CSV.
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Staff & Roles
Three roles out of the box
- AdminFull access — every module plus settings.
- ManagerSales, purchases and reports.
- CashierPOS sales only.
- Employee records & attendanceStaff details, salary and attendance, with technicians assignable to service jobs.
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Settings & Setup
Configurable without a technician
- Thermal printer configurationSelect the printer, paper size, print speed, darkness and copies — with a test print, auto-print after sale, custom header and footer text, margins, font family and size.
- Shop information & taxName, address, NTN and STR on every printed invoice.
- SQLite or MySQLRun standalone on one machine, or on MySQL so several counters share one database over your network.
- Backup & restorePlus a built-in user guide and an offline licence that doesn't need to phone home.
See it
Screens from the running system
Key benefits
What actually changes at your workshop
The things workshop owners notice in the first month.
- Customers come back on schedule. The system knows each vehicle's mileage, daily running and service interval — so you contact them before the oil is overdue instead of hoping they remember you.
- Your cash tallies at closing. Opening float, a drawer that must be opened before billing, and a register report showing expected versus actual with the difference in red or green.
- Every job is attached to a vehicle. So the next technician can see what was fitted last time, and a disputed repair is settled from the record.
- You know your real profit. Cost of sales at weighted average, expenses by category, and a proper profit & loss — not just a sales figure.
- Parts stop disappearing quietly. Stock movement is logged, adjustments need a reason, and waste and damage go in their own register.
- Nothing happens anonymously. Every login, sale, edit and delete is recorded against a named user in an exportable audit log.
- Billing never stops. It runs on your own machine or your own network — no internet, no cloud subscription, no downtime when the ISP has a bad day.
- Grows from one counter to several. Start standalone, move to a shared database when you need more than one till, without changing software.
Why Auto Mobil Shop
What a general-purpose POS can't do for a workshop
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Oil life calculated from the last real service
Not a fixed reminder date. The system uses the mileage recorded at the previous service, the current reading and the daily running to work out remaining oil life and the next due point.
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Customers own vehicles, and vehicles own history
One customer, several cars, each with its own service record, insurance and pollution expiry — a structure ordinary retail software simply doesn't have.
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The drawer must be open to sell
Billing is blocked until a register session is started, and closing is blocked until it's counted — so cash accountability is enforced, not encouraged.
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Four-dimensional parts catalogue
Category, brand, grade and unit as separate fields, because "5W-30 engine oil, Brand X, 4-litre" is not one flat product name.
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WhatsApp templates you write yourself
With merge fields for vehicle number, mileage, next service date and days remaining — so a reminder reads like it came from a person who knows the car.
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Genuinely offline
SQLite on a single machine or MySQL across your own network. No cloud account, no monthly connectivity risk, no interruption to billing.
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Split payment across any tenders you define
Cash, JazzCash, bank transfer and credit on one bill, each row recorded separately and broken down on the receipt and in reports.
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Held bills survive a restart
Parked bills are stored in the database, not in memory — so a car waiting on the ramp doesn't lose its invoice when the machine reboots.
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178 automated tests
Across 19 test suites, run against the financial and stock logic — because software that touches your money should be able to prove it still works after every change.
Who it's for
Best suited for
🛢️ Oil change centres
Where the mileage calculator and service reminders turn one visit into a schedule.
🔧 Auto workshops & service stations
Labour charges, technician assignment and full vehicle service history.
🔩 Spare parts & accessories shops
A deep catalogue with brands, grades and serial tracking.
🏪 Combined shop + workshop
Parts over the counter and service on the ramp, billed on the same invoice.
🏍️ Bike & commercial vehicle service
Anything with a registration number, a mileage reading and a service interval.
📇 Shops with credit customers
Credit limits, running balances and payment collection against invoices.
FAQ
Workshop owners ask us this
Does it work without internet?
Yes. It's a Windows desktop application that runs on your own machine with its own database. Billing, inventory, reports and printing all work with the internet disconnected. You only need a connection when you choose to send an invoice or reminder on WhatsApp.
How does the oil change reminder actually work?
When you bill an oil change, you record the vehicle's current mileage, its average daily running and the service interval. The system stores that against the vehicle, works out the remaining oil life and the next service point, and gives you a WhatsApp reminder — with the vehicle number, next service date, next service mileage and days remaining filled in automatically.
Can one customer have several vehicles?
Yes. Each customer record holds as many vehicles as you need, each with its own registration number, service history, insurance expiry and pollution certificate expiry. Every sale is attached to a specific vehicle, so history stays accurate even when one owner brings in three different cars.
Can we use more than one billing counter?
Yes. Run it standalone on one machine using its built-in database, or switch to MySQL so several counters share one database over your own network. You can start standalone and move later without changing software.
Can a customer pay part cash and part JazzCash?
Yes. One bill can be split across as many payment modes as you like — and you define the modes yourself, marking which ones count as credit. Each portion is saved separately, printed on the receipt, and reported correctly in the cash flow and register reports.
Does it stop staff from selling without opening the cash drawer?
Yes, deliberately. No sale can be made until a register session is opened with an opening cash float, and the register cannot be closed until the count is done. The register report then shows expected cash against actual counted cash, with the difference highlighted and the names of whoever opened and closed it.
Can we import our existing customer and parts lists?
Yes. Both customers and inventory import in bulk from Excel, so you can go live with your real catalogue and customer base rather than typing thousands of rows.
What reports do we get?
Eight report sections — sales, stock, purchases, inventory, customers, suppliers, financial and service — plus a dedicated cash flow report, a register report per drawer session, and a full audit log of every action. All exportable and printable.
See it running on your own parts list.
Book a free demo and we'll load a few of your products, bill an oil change with a real vehicle, print the invoice and show you the service reminder — in one sitting.
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Call or WhatsApp+92 321 4510041
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Office135-J Main Broadway, Phase 6, DHA, Lahore Cantt
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HoursMonday – Saturday, 10:00 am – 7:00 pm