Automated MOT reminders via WhatsApp: a guide for garages

Every vehicle on your customer list has an MOT due date. That date is either money in your diary or money in a competitor's — depending on whether you remind the customer before they forget and book somewhere else. Automated MOT reminders via WhatsApp are the most direct way to ensure that business comes back to you.

TL;DR

• MOT reminders sent via WhatsApp get opened and acted on far more reliably than email or post.
• The best timing is a reminder 28 days out, a follow-up at 14 days, and a final nudge at 7 days if no booking has been made.
• CodeWords automates the full sequence from your customer database, including booking links and two-way replies.

Why MOT reminders still fail at most garages

Most garages know they should be sending MOT reminders. Many do, inconsistently. The problem is usually one of these:

It's manual. Someone has to pull a report, identify who's due, and send messages. In a busy workshop, that task gets skipped when other things are urgent.

It's email. Open rates for garage email marketing sit well below 30%. A significant chunk of customers never see the reminder at all.

It's a postcard. Postcards are still used by some garages. They arrive, they sit on the kitchen counter, they get recycled.

WhatsApp is different. Message open rates on WhatsApp consistently exceed 90%. When a WhatsApp message arrives, people read it — typically within minutes.

The timing that works

A single reminder sent 28 days before the MOT is due captures customers who plan ahead. But a meaningful number of customers will read it, think "I'll deal with that later," and then forget. A sequence handles this:

28 days before due date "Hi [Name], your [Make Model] MOT is due on [Date]. We have spaces available — reply BOOK to reserve a slot or call us on [number]. — [Garage Name]"

14 days before due date (if no booking made) "Hi [Name], a reminder that your [Make Model] MOT expires on [Date]. We're still taking bookings — reply BOOK or visit [booking link]. Don't leave it too late."

7 days before due date (if still no booking) "Hi [Name], your MOT is due in 7 days on [Date]. We can fit you in this week — reply YES and we'll confirm a time."

The key detail in the second and third messages: "if no booking made." You don't want to send a reminder to a customer who already booked through you. Cody checks the booking status before sending, so customers who've already responded don't get unnecessary follow-up.

Setting up automated MOT reminders with CodeWords

The data you need already exists: your customer records should include vehicle registration and the last MOT date. From the registration, the MOT due date is derivable (standard 12-month cycle after the first three years). If your garage management system like Garage Hive stores this explicitly, even better.

Here's the basic setup in CodeWords:

See how CodeWords works for garages → codewords.ai/whatsapp-agents/auto-repair-mot

1. Connect your customer database or garage management software
2. Set up a daily check that identifies customers whose MOT is due in 28, 14, or 7 days
3. Configure the three message templates with personalisation fields (name, vehicle, date)
4. Set the booking response trigger — when a customer replies "BOOK" or "YES", create a booking request and notify your team
5. Add a suppression rule: don't send reminders to customers with an active booking

The whole workflow runs without anyone touching it. New customers added to your system automatically enter the reminder sequence when their MOT date is recorded.

Handling the booking reply

When a customer replies to book, you have options for how to handle it. The simplest approach for smaller garages: the reply triggers a notification to your team with the customer's details, and a staff member confirms the appointment manually. This works well if you're not yet using online booking software.

If you want full automation, the reply can create a provisional booking in your management system and send the customer a confirmation with the slot details. AutoFluent and similar platforms support this kind of integration.

Either way, the customer gets a response quickly — and that speed of response is itself a competitive advantage. Customers who text a garage and hear back within minutes are significantly more likely to book than those who wait hours.

What about customers who fail their MOT?

The MOT reminder sequence is also an opportunity to set up a post-MOT follow-up workflow. When a vehicle fails and needs repair work to pass a retest, an automated message can confirm what's needed and what the cost will be, then invite the customer to approve the work. This is separate from the reminder sequence but uses the same WhatsApp channel — see how to send repair estimates and approvals through WhatsApp instantly for detail on that workflow.

Measuring what works

Once the sequence is running, you can track:

• Open rate on each message in the sequence
• Reply rate (customers who respond "BOOK" or similar)
• Conversion to confirmed booking
• Drop-off point — which message in the sequence customers stop at

This tells you whether your message copy is working and whether the timing is right. If the 28-day message gets high opens but low replies, the message itself might need adjusting. If the 7-day message gets high conversion, the 14-day one might be unnecessary for your customer base.

For more on customer retention in garages, see why customers stop coming back to your garage (and how automation fixes it).

Getting started

You need a WhatsApp Business API connection and your customer database. CodeWords handles the API setup and connects to your existing tools. Most garages can have the reminder sequence running within a day of setup.

The customers on your list whose MOT is due in the next 90 days represent booked revenue — if you reach them first. Visit the WhatsApp agents for auto repair and MOT centres page to see how to set this up.