The awkward invoice conversation usually starts much earlier. The customer believed one price was agreed, the workshop found additional work, and the approval record amounts to somebody remembering a phone call.
A clear quote and authorisation process protects both sides. The customer knows what the garage is proposing, while the garage has a record of the scope, price and decisions made after inspection.
The Competition and Consumer Protection Commission publishes current guidance for consumers on car servicing and repairs. This article turns that guidance into an operational workshop process. It is general information rather than legal advice.
Quote and estimate are not interchangeable
The CCPC distinguishes a quote from an estimate:
- a quote is a fixed price for the stated work
- an estimate is an informed indication of likely cost that can change
If the final price cannot be supplied before work starts, the CCPC says the repairer should explain how it will be calculated. The guidance also recommends a written breakdown of labour, parts and VAT.
Use the correct document label and explain the basis clearly. Calling every document a quote can create a fixed-price expectation even where strip-down or diagnosis is needed before the scope is known.
What a useful repair quote contains
A workshop quote should identify:
- garage legal and contact details
- customer and vehicle
- date and quote reference
- requested work or reported symptoms
- labour operations and rates or fixed amounts
- parts, quantities and prices
- outside services where known
- discounts and VAT treatment
- total price or stated calculation basis
- validity period where appropriate
- assumptions and exclusions
- proposed timing
Avoid a single line such as “repair vehicle, €900.” It may be quick to type, but it gives reception nothing useful when the customer asks what changed.
Motorworks invoicing and estimates keep quote lines connected to the later job and invoice. That reduces retyping and helps the final document reflect the approved scope.
Record how the customer approved it
Approval can happen in person, by phone or through a written channel. Whichever method is used, retain:
- customer or authorised fleet contact name
- quote or estimate version approved
- approved items and total
- date and time
- communication method
- staff member who recorded the decision
For a business account, record any purchase-order or authorisation reference required by the customer. “Spoke to driver” may not be adequate if only the fleet manager can approve expenditure.
Additional work needs a second decision
The CCPC advises customers not to permit extra work without their permission. When a technician finds an additional defect, treat it as a new approval step.
- Record the finding clearly.
- Attach a photograph or measurement where it helps explain the condition.
- Price the proposed additional work.
- Explain any change to completion time.
- Ask the authorised person to approve, decline or defer it.
- Record that decision before work proceeds.
Do not rewrite the original quote to make it appear that the new item was always included. Preserve the original and the later authorisation so the history remains intelligible.
Motorworks vehicle inspections support pass, advisory and fail findings, fitted prices and follow-up dates. Approved defects can move into the quote or job; declined work remains visible rather than disappearing.
Keep diagnosis separate from repair approval
Some faults cannot be priced accurately before diagnostic work. In that case, agree the diagnostic scope first:
- what the initial diagnostic charge covers
- any time or cost limit
- what happens when the limit is reached
- whether further work needs fresh approval
- how findings will be reported
This avoids the false choice between guessing a repair price and beginning open-ended work. The first authorisation is for diagnosis; the second is for the repair identified from it.
Handle declined and deferred work properly
A customer may reasonably decline a non-urgent item or postpone it. Record the exact decision and avoid language that overstates the risk.
For deferred work, keep:
- defect description and inspection date
- condition or measurement observed
- recommendation given
- customer decision
- agreed follow-up date, if any
- whether the item affects safe use of the vehicle
Where a defect may make the vehicle unsafe, the garage should communicate that clearly and follow the applicable professional and legal obligations. Software cannot decide roadworthiness from a dropdown selection.
Make the final invoice agree with the approvals
Before issuing the invoice, compare it with:
- the original approved quote or estimate
- approved additional work
- completed job-card lines
- returned or unused parts
- discounts and VAT rates
- deposits or payments already received
Every material difference should have an explanation in the record. The invoice can then describe the work actually completed without creating a new version of events at the counter.
Revenue requires particular fields on a VAT invoice, including a unique sequential number and VAT breakdown. Read our Irish garage invoicing guide before designing the final document.
A simple workshop status model
A shared set of statuses helps reception and technicians understand what may proceed:
- draft: being prepared, no customer commitment
- sent: supplied to the customer for review
- approved: the stated work may proceed
- partly approved: only named items may proceed
- declined: no work under that proposal
- expired or superseded: retained for history but no longer current
Do not let “sent” mean “approved.” That single distinction prevents a surprising amount of trouble.
Review the process, not only the paperwork
Once a month, sample a few completed jobs and ask:
- Can we find the original proposal?
- Is the approved version identifiable?
- Does every additional item have authorisation?
- Do job lines and invoice lines agree?
- Are declined advisories still in the vehicle history?
- Could a colleague explain the record without asking the person who handled it?
The goal is not more administration. It is a record that removes the need for reconstruction later.
Motorworks connects quotes, inspections, approvals, jobs and invoices in one workflow. Book a demo to follow a job with additional work from first estimate to final invoice.
Official source
Reviewed against the linked CCPC guidance on 2 September 2026. Obtain legal advice for disputes or contract terms specific to your business.
