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How Do We Get Rental Cars Serviced on Time When They Are Always Out on Hire?

Car and van rental services and MOTs fall due while vehicles are on hire or booked. We build a service planner that books workshop slots around the diary.

Updated 3 min readBy SpiderHunts Technologies

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Quick answer — TL;DR

Rental vehicles hit service intervals by mileage while they are out on hire, and MOT dates come round when they are booked solid, so maintenance keeps getting pushed back. We build a service planner that forecasts when each vehicle will be due from its mileage rate and bookings, finds the gaps in its diary and blocks them for the workshop before the next hire takes them.

Due last week, booked until next month

The service light came on during a hire. The hirer mentions it at check-in. The car is due its service now, but it has back-to-back bookings for the next three weeks, and the branch is short of that group already. So the service is put off, then put off again. Meanwhile another car's MOT runs out on Saturday, and it is on a hire until Monday.

The workshop, whether in-house or a local main dealer, gets vehicles in random bursts when branches finally free them up.

Why maintenance loses to bookings

Rental fleets are run to be on hire. Every day in the workshop is a day not earning, so the booking diary always feels more urgent than the service schedule. And the schedule itself is often a spreadsheet of due dates that does not know which vehicles are booked.

  • Services fall due on mileage or time, and rental mileage varies wildly by hire.
  • MOT dates are fixed, but only checked when someone looks.
  • The service schedule and the booking diary are in different places.
  • Recalls and tyre replacements add unplanned work on top.
  • Long hires take a vehicle past its due point with no way to bring it in.

The bill for putting services off

Vehicles going out overdue for service, which risks warranty and reliability problems. MOT expiries that take a vehicle off the road at the worst moment. Breakdowns on hire and the replacement vehicle and recovery that follow. Lumpy workshop demand, which means waiting for slots when you need them most. None of this is dramatic on its own, but it adds up.

The service planner we build

  1. Each vehicle's service intervals, MOT date, tyre and brake check points and any open recalls are held in one record.
  2. The planner learns each vehicle's mileage rate from telematics or check-in readings, and forecasts the date it will reach its next service mileage.
  3. It compares the forecast due date with the vehicle's booking diary and finds the best gap before it is due, including a short swap with another vehicle in the same group if that frees a day.
  4. Suggested workshop days are sent to the branch manager and the workshop for approval, and once approved, the vehicle is blocked in the diary so it cannot be booked.
  5. For long hires that will pass a due point, the planner flags the hire early so you can arrange a swap with the hirer.
  6. MOT dates within a set window show on a list that cannot be dismissed until the test is booked.
Due itemForecast fromWhat the planner does
Service by mileageMileage rate and bookingsFinds a gap before the due mileage
Service by timeLast service datePlans with the next quiet period
MOTTest due dateBlocks a day in the diary well ahead
RecallManufacturer noticePlans with the next workshop visit

Working with outside workshops

Many rental firms use a main dealer or independent garage for servicing. The planner can send them a forward list of vehicles and suggested days, so they can offer slots rather than squeezing you in. When a vehicle is booked in, the expected return date feeds your availability so the website does not sell it.

Maintenance that fits around the hires

Services happen before they are overdue, in days the vehicle would have been quiet anyway. MOTs stop being a surprise. The workshop gets a steadier flow of vehicles, and branch managers approve a planned schedule rather than arguing about which car can be spared this week.

Are services losing out to bookings?

  • Services are regularly overdue because vehicles are booked.
  • MOT dates are tracked on a spreadsheet or not at all.
  • Hirers report service lights coming on.
  • Long hires take vehicles well past their service mileage.
  • Your workshop gets vehicles in unpredictable bursts.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

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Where does the mileage data come from?

From telematics if your vehicles have it, otherwise from check-out and check-in odometer readings.

Can it book slots with our garage directly?

If the garage has an online booking system with an API, possibly. More often it sends a forward list and the garage confirms slots.

Does it decide service intervals?

No. Intervals come from the manufacturer's schedule and your own policy.

Will it block too many days from bookings?

It suggests days and a manager approves them. You can set how far ahead it plans and how many vehicles per group can be off at once.

What drives the cost?

Fleet size, telematics setup, how we connect to your rental system and whether outside workshops need access.

Keep reading

More on Problems We Solve

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