Approximately 40% of MOTs conducted in the UK result in either a failure or advisory items. For a garage completing 100 MOTs per month, that's 40 vehicles leaving the workshop with a documented list of work that needs doing — brake wear, tyre depth, suspension play, corroded components, fluid leaks. Every one of those items is a repair booking waiting to happen.
In most garages, nothing happens. The customer takes the failure sheet, drives away, and either ignores it, forgets about it, or takes the repair work to whichever garage is most convenient when they eventually get around to it. The garage that identified the problem doesn't capture the revenue from fixing it.
This article covers the size of the opportunity, why garages miss it, how automated follow-up changes the conversion rate, and the exact revenue impact for a typical independent workshop.
The MOT Failure Funnel — Where the Revenue Disappears
Here's what happens to 100 MOTs in a typical garage without automated failure follow-up:
Of 40 vehicles with advisory items, only about 5 book a repair — and most of those are customers who book at the desk before leaving. The other 35 vehicles walk out the door. The work either doesn't get done, gets done elsewhere, or gets done months later when a different garage picks it up at the next MOT.
The Revenue Walking Out the Door
Monthly Revenue Lost from Unactioned Advisory Work
£5,775 per month — nearly £70,000 per year — in repair work that was identified by your technicians, documented on your paperwork, and then lost because nobody sent a follow-up message. The work was right there. The customer knew about it. They just needed a nudge.
The Most Common Advisory Items — and What They're Worth
Not all advisory items have equal repair value. Here are the most frequently recorded items and their typical repair cost when booked:
| Advisory Item | Frequency | Avg Repair Value |
|---|---|---|
| Brake pads/discs worn close to limit | Very common | £180–£320 |
| Tyres approaching minimum tread | Very common | £200–£400 |
| Suspension components worn/play | Common | £120–£280 |
| Exhaust corrosion/leak | Common | £80–£250 |
| Fluid leaks (oil, coolant, brake) | Moderate | £60–£200 |
| Windscreen chips/damage | Moderate | £60–£120 |
| Anti-roll bar links/bushes | Moderate | £80–£160 |
| CV boot split/deteriorated | Moderate | £90–£180 |
The average advisory repair value across all item types is approximately £165. Some vehicles have multiple advisories — a brake and tyre job together can easily total £400–£600. These are high-margin jobs that the garage has already diagnosed. The only missing piece is getting the customer to come back.
The Automated Follow-Up Sequence
My Garage CRM sends automated follow-up messages after every MOT that records failure or advisory items. Here's the sequence:
Verbal Handover + Digital Summary
The technician records advisory items on the digital job card. At collection, the receptionist explains the items verbally. The system simultaneously sends the customer a digital summary by SMS and email — so they have the list on their phone, not just on a piece of paper they'll lose.
Automatic SMS + EmailAdvisory Follow-Up — Repair Booking Offer
One week later, the customer receives a targeted message listing their specific advisory items and offering a convenient booking link. The tone is helpful, not pushy: "Your MOT flagged a few items that will need attention before your next test. Book a repair at a time that suits you."
Automatic SMS + EmailFinal Reminder — Seasonal Angle
If the customer hasn't booked after the first follow-up, a final message is sent. This often ties the advisory items to a seasonal relevance: "Winter is coming — now's the time to sort those brakes/tyres before the weather turns." The booking link is included again.
Automatic SMS onlyWhat the Follow-Up Message Looks Like
The message is personalised with the customer's name, vehicle, and the specific advisory items from their MOT. It doesn't feel like a generic marketing message — it feels like the garage remembering what was discussed and following through. That personalisation is what drives the conversion rate.
The Numbers — Before and After Automated Follow-Up
Automated follow-up roughly triples the conversion rate — from around 12% to 28–35%. For a garage doing 100 MOTs per month, that's 7–9 additional repair bookings per month that would otherwise have been lost.
Why 7 Days Is the Right Timing
The follow-up timing matters. Too early and the customer hasn't had time to consider the advisory items — they've just collected their car and aren't thinking about booking another visit. Too late and they've forgotten the conversation, lost the paperwork, or already booked elsewhere.
Seven days is the sweet spot based on conversion data from UK garages. At 7 days, the customer has driven the car for a week and may have noticed the issues themselves (a brake squeal, steering pull, or tyre noise that confirms what the technician said). The advisory items have moved from abstract paperwork to something they can feel. The follow-up arrives at exactly the moment when the customer is most receptive.
The Work You're Already Owed
This is what makes advisory follow-up different from every other marketing tactic. You're not generating new demand. You're not competing for customers. You're not running a promotion or offering a discount. You're simply following up on work that your technicians already identified, on vehicles you've already inspected, for customers who already trust you.
The diagnosis has been done. The labour is accounted for. The customer already knows the work needs doing. The only thing standing between "advisory noted" and "repair booked" is a well-timed message with a booking link.
- No acquisition cost — these are existing customers. You've already paid the cost of acquiring them.
- No diagnostic time — the technician already found the issue during the MOT. No additional inspection needed.
- Higher trust — the customer is more likely to book the repair with the garage that identified the problem than with a garage that hasn't seen the car.
- Higher margins — advisory work is planned, not reactive. Parts can be pre-ordered. Bay time can be scheduled. Efficiency is higher than on walk-in repairs.
What About Customers Who Don't Convert?
Not every advisory follow-up will result in a booking. Of the customers who don't respond to the day 7 and day 21 messages, the reasons typically fall into three categories:
- Not urgent enough (yet) — advisory items are by definition not failures. Some customers wait until the item deteriorates further. They may book in 3–6 months. Their record is flagged for future reminders.
- Done elsewhere — some customers take the advisory list to a different garage. This is unavoidable, but follow-up reduces it significantly because the booking link makes it easier to book with you than to search for someone else.
- Ignoring it — a small percentage of customers simply don't act on advisory items. They'll come up again at the next MOT — possibly as failures — and the cycle repeats.
The follow-up system doesn't need a 100% conversion rate to be transformative. Moving from 12% to 30% captures enough additional revenue to pay for the entire CRM system many times over.