Retention Metrics
Which numbers to track to understand garage customer retention — MOT return rate, service repeat rate, revenue per customer and how to measure improvement.
Last updated 6 July 2026 · 6 min read
Part of our guide to Customer Retention
MOT return rate
Count customers who MOTd with you in the previous 12 months. Count how many of those returned for an MOT in the current period. Divide the second by the first. Top independents hit 60–70%. The UK average is closer to 40–50%. Use the customer retention calculator to model what a 10-point improvement means in revenue.
Service repeat rate
Track customers who had a service and returned for another within 18 months. This is harder than MOT rate because intervals vary, but it reveals whether service reminder strategies are working. Low service repeat rate usually means no reminders between visits.
Revenue per active customer
- Total revenue from returning customers divided by active customer count
- Track annually to see if customers are spending more per visit
- Rising revenue per customer often means better advisory conversations
- Falling rate may indicate customers are cherry-picking MOT-only visits
Reminder conversion rate
Of the reminders you sent, how many resulted in a booking? This tells you whether timing, message content or booking links need work. Compare against the templates in follow-up message templates and timing in MOT reminder best practices.
Set a baseline, then improve
You cannot improve what you do not measure. Record your numbers before launching automated reminders, then review monthly. AskMike Customer Reminders sends reminders and tracks engagement. For tactics to move the numbers, read increasing repeat business and the customer retention guide.
Frequently asked questions
- What is the most important retention metric for a garage?
- MOT return rate — the percentage of last year's MOT customers who MOTd with you again this year. It is easy to measure and directly tied to reminder performance.
- How often should I review retention numbers?
- Monthly is enough for most independents. MOT return rate is best reviewed quarterly or after each MOT season peak when you have a full year's data.
Related guides
Customer Retention
A practical guide to keeping garage customers coming back — reminders, follow-ups, loyalty and the systems that stop one-off visitors drifting to competitors.
Why Customers Don't Return
The real reasons garage customers go elsewhere — and which ones you can fix with reminders, follow-up and a better handover experience.
Increasing Repeat Business
Proven tactics to turn one-off garage customers into regulars — reminders, bundling, handover quality and making the next booking effortless.
Service History Benefits
Why keeping customer service history matters for retention — accurate reminders, trust at handover and customers who stay because you know their car.
Customer Retention FAQs
Answers to the questions garage owners ask most about customer retention — reminders, return rates, automation and what actually brings customers back.
Try a free tool
Ready to modernise your garage?
AskMike gives independent garages a professional website, online bookings and add-ons that reduce admin and win more work.