The tuning-file price is one part of a workshop order. Include labour for diagnosis, reading, writing and verification, along with direct costs, before assessing the amount remaining.
On this page3 topics ⌄
01
Use your own net figures
The calculator uses net sales, file and option costs, labour hours, an internal hourly cost and other direct costs. The Stage 1 default comes from the current price configuration; add any other options yourself.
02
Understand the result
The calculated remainder is before overheads, taxes and further operating costs. It is not a profit or revenue forecast. Revisions and extra diagnosis can change the work required.
03
Describe the customer service clearly
Define which file work and vehicle checks are included and how technical questions are handled. Confirm tool coverage and vehicle suitability before accepting a job.
Enter your own net figures. The file-cost default is the current Stage 1 base price; include additional options yourself.
Before overheads, taxes and further operating costs. Not a profit forecast. Values are processed only in your browser.
On this page4 topics ⌄
01
Separate file expenditure from workshop labour
Start with the software service the actual job needs. Read its current credit requirements from the price list and include any separately requested options. Then identify the work performed in your workshop: booking assessment, diagnosis, electrical preparation, reading, writing and the relevant checks. These are separate inputs even when the customer buys the work as a single appointment.
Use the figures your own business can substantiate. A file-service price is not an assumed labour cost, and a competitor's retail offer does not establish your operating cost. Keeping the inputs separate makes it easier to see why two apparently similar customer jobs may require different amounts of workshop time.
Allow the technical scope to influence the calculation
A straightforward stock-hardware enquiry and a project with an uncertain software history should not automatically receive the same labour assumption. Identify the work you expect to perform and make any unresolved technical points visible before quoting. Tool access, a controller change or an incomplete specification can alter what the workshop needs to investigate.
This does not mean inserting an arbitrary allowance into every job. It means using a defined scope and discussing changes when the actual vehicle differs from it. If the customer later changes hardware or requests another function, update the brief and the cost assessment together rather than hiding that change inside an unrelated revision discussion.
Understand what the calculator leaves outside the result
The displayed remainder follows the inputs entered; it is not a forecast of business profit. Check which overheads, equipment costs and wider operating expenses are accounted for elsewhere in your business. Consider how your own accounting treats those items before interpreting the result. The calculator is a way to organise a job discussion, not a replacement for your business records.
Keep the basis consistent when comparing scenarios. If one calculation includes staff time or a direct expense and another omits it, the two remainders do not describe the same scope. Record the assumptions so a later review can explain the difference instead of attributing every change to the file price.
After a job, compare the estimated work with the time and direct costs actually recorded. Note why the scope changed, if it did, and whether the original technical brief was complete. This gives your workshop evidence for later quotations without inventing a universal processing or labour allowance.
Keep the customer-facing offer clear about the services included and the route for discussing additional work. The file order, vehicle checks and technical feedback should remain identifiable even if they form part of one retail package. A consistent description of that package supports both cost control and a clearer handover between staff.
