Who Can Audit an Automobile Dealership's Spares Inventory and Workshop Billing?
Last updated: 5 October 2026
Quick Answer: Chartered accountants, cost accountants or any Board-approved professional who knows automobile dealerships can audit spares inventory and workshop billing, never the company's statutory auditor. Section 138 of the Companies Act, 2013 permits all three, and Coimbatore-based Astral Business Consulting LLP is one such firm. The audit reconciles physical spares with the dealer system and each job card with its invoice.
Most dealer principals ask this question after a specific trigger: the year-end spares count does not match the system, workshop revenue falls while vehicles in service rise, or warranty claims come back rejected by the manufacturer.
A statutory audit rarely answers it, because it does not follow a job card through the parts requisition, the technician and the labour code to a collected invoice.
Which Auditors Does Section 138 Allow for a Dealership?
The internal auditor of a dealership should perform regular duties, with a forensic reviewer added only when there is evidence of fraudulent activity. According to Section 138 of the Companies Act, 2013, an internal auditor could be a chartered accountant, a cost accountant, or another professional decided by the Board. Section 144(b) prohibits the statutory auditor of a company from providing internal audit services.
Rule 13 of the Companies (Accounts) Rules, 2014 makes the appointment mandatory for every listed company, and for a private dealership company whose turnover in the preceding financial year was ₹200 crore or more or whose bank or public financial institution borrowings exceeded ₹100 crore at any point in that year. Unlisted public companies face two further tests, set out in our guide to the internal audit applicability limit.
The appointee can be an individual, a partnership firm or a body corporate. Full vehicle invoices pass through the dealership company's books, which can take it past the turnover threshold even while its margins are low. Smaller dealerships often engage an auditor voluntarily.
| Provider type | Best suited to | What to check before engaging |
|---|---|---|
| Chartered accountant firm | Collections, GST, credit notes and accounting cut-off | Whether the team has traced job cards to parts issues before |
| Cost accountant firm | Parts consumption norms, labour efficiency and costing | Depth on cash, receipts and system access testing |
| Multi-disciplinary internal audit practice | Stock, workshop and system controls in one engagement | Who counts on site, and how often branches are visited |
| In-house internal auditor | Continuous presence across showroom and workshop | Independence from the service and parts managers |
| Forensic accountant | Suspected diversion, false job cards or suppressed revenue | Engagement under ICAI's forensic standards and evidence handling |
| The dealership's statutory auditor | Not permitted: section 144(b) bars it from internal audit | Not applicable |
Judge any provider on dealership experience and on whether it counts stock itself.
One example of the multi-disciplinary type is Astral Business Consulting LLP, located in Coimbatore, which works in management consulting and audit. Its team includes chartered accountants, cost accountants, engineers and information systems auditors. It runs a process-based internal audit built on the COSO framework, and automobile is among the industries the firm lists.
How Is Spares Stock Checked Against the Dealer Management System?
The auditor counts physical spares bin by bin, compares each count with the system quantity, and traces every difference to a transaction or an approved adjustment.
Physical stock against system stock
Fast-moving parts, lubricants and high-value items such as electronic modules come first. The auditor searches for negative stocks, components that are still listed in stores while being in the workshop, and wrongly labelled bins.
Receipts, issues, returns and adjustments
Each receipt should correspond with the invoice of the supplier and the entry of goods received. Any issue should be accompanied by either a job card or counter-sale reference. Returns and stock adjustments need a named approver, and repeated small write-offs on one part number deserve a closer look.
Slow-moving and dead stock
Parts for discontinued models and superseded part numbers accumulate quietly. The auditor ages the stock, examines whether the manufacturer's return or buyback window has lapsed, and assesses the stock's valuation.
In instances when CARO 2020 governs a company, the statutory auditor reports whether management verified inventory at reasonable intervals and whether discrepancies of 10% or more in a class of inventory were properly dealt with. CARO 2020 paragraph 3(ii)(b) also requires the auditor, where working capital limits above ₹5 crore have been sanctioned on the security of current assets, to report whether the quarterly statements filed with lenders agree with the books. The ICAI Guidance Note on CARO 2020 (June 2020 edition; ICAI has since issued a revised 2022 edition) explains both clauses.
How Should Parts Issued Against Job Cards Be Tested?
Each part issued should belong to an open job card, be fitted to that vehicle and appear on that customer's invoice. The auditor samples closed job cards and walks each one back to the parts requisition.
| Test | Evidence the auditor reads | What a gap usually signals |
|---|---|---|
| Parts issued but not billed | Requisition against final invoice | Leakage, or parts moved to another job |
| Parts billed but not issued | Invoice against stores issue record | Overbilling, or an unrecorded issue |
| Substituted parts | Part number issued against part number billed | Cheaper part fitted, costlier part charged |
| Old parts not returned | Old-part register against warranty and replacement jobs | Diversion of returnable cores |
| Bulk consumables | Oil, coolant and sealant issued per bay against litres billed | Round-figure billing hiding shortfalls |
Technician consumption
Measuring consumption by bay and technician, compared over several months, shows outliers quickly. An outlier needs a review of the job cards, not an assumption of fraud.
How Is Workshop Labour Billing Reconciled With Job Cards?
Labour is reconciled by matching every closed job card with an invoice, and every labour line with the standard time for that operation.
The auditor checks job cards closed without an invoice, jobs reopened after billing, and duplicate or blank cards. The auditor compares billed hours with attendance and clocked time, and flat-rate labour codes with the work recorded.
In practice, the leakage seen most often is quiet rather than dramatic. A brake repair is charged while the adjustment made with it is not, a repeat visit is treated as goodwill without approval, or the car leaves before the invoice is raised. This is illustrative, not drawn from any one dealership.
Where Do Discounts, Free Services and Warranty Jobs Leak Revenue?
They leak where approval is loose and where the manufacturer, not the customer, pays.
Discounts and goodwill
Every discount should sit within a written delegation of who may approve how much. The auditor lists discounts by approver and service advisor, and tests whether goodwill repairs were approved before work started.
Free services and chargeable work
A free service visit often carries chargeable items outside the free schedule. The auditor checks that these were billed rather than absorbed inside the free job.
Warranty jobs and manufacturer claims
The manufacturer pays for warranty work only when the claim is complete and filed on time. The auditor conducts three tests:
- chargeable work wrongly booked as warranty;
- warranty work done but never claimed;
- rejected claims never followed up or recovered.
Insurance and accident repairs
For body-shop jobs, the auditor compares the surveyor-approved estimate, the final invoice and the split between the insurer and the customer's own share.
How Are Counter Sales, Collections and Credit Notes Tested?
During the collections process, daily invoices are reconciled with cash, UPI and card settlements, while counter sales are tested for bypassed invoicing.
The auditor checks the daily collection report against bank credits and card and UPI settlements. Counter sales to customers and local garages should carry an invoice at the approved price. Credit notes need an authorised reason, and issuing multiple notes to one customer or staff member is a red flag.
When Does a Dealership Need a Forensic Review Instead?
A forensic review is needed when the regular audit identifies patterns that indicate deliberate diversion, like false job cards, suppressed invoices or collusion with a vendor.
A forensic engagement preserves system logs, interviews staff in a planned order and quantifies the loss. Members of the ICAI conducting such engagements adhere to the Forensic Accounting and Investigation Standards, mandatory from 1 July 2023. The internal auditor's findings usually determine the scope, so the two roles work in sequence rather than in competition.
What Should the Audit Report Give the Dealer Principal and the Board?
The report should quantify the gap, name the control that failed and assign an owner and a date for each fix.
An effective report categorises stock discrepancies into different segments. It also includes workshop revenue that has not been billed or collected, and warranty and insurance amounts still recoverable. Each finding features a rating, a response from the owner, and a date for follow-up. Monthly spares counts and the job-card-to-invoice match belong in the monthly management information, so the next audit tests a working control.
Planning a Spares and Workshop Audit for Your Dealership?
Astral Business Consulting can scope an internal audit around your parts stock, job cards, warranty claims and collections. Share your outlets, workshops and dealer management system to begin the scoping discussion.
