From the AI playbook for mechanics and garages

New to AI? You don't need to learn anything first. Follow the steps below: open the tool, paste the prompt, fill in the [brackets], then check the result before you use or send it. See also how to use AI at work, for beginners.

Job 2 of 18ChatGPTWhatsApp Business

Get written approval before doing extra work

"I never agreed to that" is the most common garage dispute. A quick written approval request avoids it.

Time: 2 minutesTool cost: you can start with a free AI tool

A free AI chat tool, then WhatsApp or text

Steps

When you find something beyond the booked job, note it with the price.
Run the prompt below.
Send it with a photo and wait for a written yes before starting.
Save the approval with the job card.

The exact prompt

Copy, paste, then fill in the [brackets]

Write a short message from a [UK] garage asking a customer to approve extra work. Under 80 words.
Booked job: [e.g. service]. Found: [issue]. Extra cost: [parts + labour inc VAT]. Extra time: [e.g. car ready tomorrow instead of today].
Options: approve, decline (we'll note it on the invoice as advised), or call us to discuss.
Ask them to reply YES to approve. No pressure.

✓ Check before you send

You have their written yes before the work.
Declined advisories are recorded on the invoice.
The price includes VAT if you charge it.

UK notes extra

Customers don't have to pay for work they didn't agree to. GOV.UK: consumer protection rights.

Last reviewed Oct 2026. Free tools change. If a screen looks different, the steps still apply.Back to top ↑

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See all 18 jobs in the mechanics and garages playbook →

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