Example: phone coverage for a six-bay auto repair shop

The shop in this example

Millbrook Auto Repair is a fictional independent shop, built to show how the call handling and the numbers would work. It has six bays, five technicians, an owner who still takes the odd diagnostic job, and two service advisors who run the counter, the lot and the phone between them. In this example the phone carries about 240 calls a week: roughly 45 on a weekday and a lighter Saturday morning.

Independent shops are a big employer in this trade: a quarter of US automotive technicians work in mechanical and electrical repair shops, against 32% at dealers^[1]. The work keeps coming. S&P Global Mobility's 2025 analysis put the average light vehicle on US roads at 12.8 years old, with 289 million in operation^[2]. Behind the counter, an older fleet means more check-engine lights, more brake jobs and more callers asking whether a car is still worth fixing.

Where the calls go wrong today

The trouble is timing. The phone is busiest from 7:30 to 9:00, when customers drop off, and again from 4:30 to 6:00, when they pick up. Those are the exact windows when both advisors are writing repair orders, taking keys or walking someone out to a car. In this example the phone report shows about 15% of calls ringing out, nearly all of them inside those two windows.

Voicemail does not hold up well in a repair shop. A driver with a grinding noise wants to know today whether someone can look at it, and if nobody answers, the next shop on the map gets the call. Calling back is harder than it sounds: in Pew's 2020 survey, eight in ten Americans said they don't generally answer their cellphone when an unknown number calls^[3]. And AAA reported in 2017 that a third of US drivers had yet to find a repair shop they trust^[4]. For a new customer, that first call is the tryout. Let it ring out and the tryout goes to someone else.

Status calls do a different kind of damage. Each "Is my car ready?" call takes an advisor two or three minutes, and often a walk to the bay to ask the technician, who stops a paid job to answer. Technicians earned a median $24.34 an hour in 2025^[1], and the lift sits idle while they talk. Example: 70 status calls a week at three minutes each is three and a half hours of advisor time.

Estimate calls are the hardest to handle well on the fly. Both advisors know the oil-change price and the diagnostic fee by heart, but a caller asking what brakes cost on a ten-year-old SUV deserves an honest answer: it depends on what the inspection finds. A rushed advisor either gives a number that comes back to bite, or says "just bring it in" without booking a time, and the caller hangs up with nothing.

How the phone setup would work

In this example the owner keeps the shop's number, and calls still ring at the counter first. The phone carrier forwards unanswered calls after about four rings to a new line, where an SI Employee answers in the shop's name. After closing nobody picks up, so the same rule covers nights and Sundays. The owner and the lead advisor spend an afternoon writing the rules it follows, one call type at a time.

• Drop-offs: the booking calendar opens 15-minute drop-off slots from 7:30 to 10:00, so one car per slot and ten a morning. When the bays are full for a day, an advisor blocks that date. The caller gets a time; the advisor gets the vehicle details before the car arrives.
• Prices: the owner lists the prices the shop is happy to give by phone, such as an oil change, the diagnostic fee and tire mounting. Anything that needs eyes on the car becomes a diagnostic drop-off or an advisor callback, never a guess.
• Status: in this example the shop's management software has an API the owner can connect, so a live lookup during the call finds the open repair order by the caller's number and reads back the status the advisor set. No open order, or a status more than four hours old, means a message instead.
• Tow-ins: anyone stranded somewhere unsafe is told first to get clear of traffic and call roadside assistance or 911. During business hours the call then transfers. After hours it confirms the shop takes tow-ins, gives the address and key-drop steps, and leaves a message marked urgent for the first advisor in.
• Transfers: callers who ask for a person, warranty companies and anyone unhappy about a repair go, during hours, to one number the owner picks: here the lead advisor's cell, never the main line that forwarded the call. If nobody picks up, the caller comes back to the SI Employee and leaves a message, marked urgent for an unhappy customer.

Repair approvals do not change. In this example the SI Employee never approves work, quotes a repair-order total or promises a finish time the advisor has not set. Its job is narrower: every caller leaves with a booking, an answer the owner wrote, or a callback time, and the advisor starts each callback already knowing the year, make, model, mileage and symptoms.

Advisors signed in to the dashboard can listen to a live call and take it over. Each call lands in the service inbox as an email with a short summary and the vehicle details, plus a link to the recording and full transcript. Callers are saved as contacts and recognized by their number, so a returning customer's last call and any upcoming drop-off are on file. A sample shop call is on the auto shops page.

Before and after, call by call

Read down the right-hand column and nobody hangs up with nothing. A booked slot, a straight answer on why a brake price needs an inspection, or a callback at a stated time all keep a new customer from dialing the next shop.

What the numbers would look like

The worked example below models the monthly value of booking and estimate calls that ring out. Only the job value comes from outside research, and it is set below the published figure. The call volume, missed share and booking rate are invented for Millbrook, so treat the result as a way to test your own numbers rather than a forecast.

On those inputs, about 156 calls a month would ring out, about 55 of them asking for work, and about 25 would have become repair orders: roughly $11,000 a month of work at risk in this example. Halve the booking rate and the modelled figure is still about $5,500. Nearly all of those missed calls fall in the two rush windows, which is why the owner in this scenario points the setup at those hours first.

The one-job figure also understates what a new customer is worth. AAA's 2025 driving-cost study budgets 11.04 cents a mile for maintenance, repair and tires on a new car over five years and 75,000 miles, about $1,656 a year, extended warranty included^[5]. AAA has also reported that a third of drivers skip or delay recommended service^[4], so in this example the advisors spend some of the time they get back calling about work customers declined last month.

The first 30 days in this example

The owner keeps a list of calls that went wrong in the first month. Example: a fleet manager wanting four vans booked on one morning, a caller asking whether the shop works on a particular European model, and a customer disputing a bill. Each becomes a new answer, a new rule or a straight transfer, which is how the setup would improve without rewriting the greeting every week.

The rollout starts narrow on purpose. Only unanswered calls move in the first month, and only drop-offs inside the opened slots are booked without a person. Status lookups wait until week two, because reading back a stale status is worse than taking a message.

Lessons from the scenario

• Decide in writing which questions get a price and which get a diagnostic slot.
• Open only the drop-off slots the bays can really take; blocking a full day matters more than filling it.
• Status answers are only as good as the status the advisors set on each repair order.
• Tow-ins and unhappy customers go to a person during business hours, and leave an urgent message when nobody can pick up.
• Judge the setup on booked drop-offs and completed callbacks, not on answered calls.

Plenty stays the same. The shop keeps its number, its prices, its advisors and its way of approving work. A customer who wants the advisor who looked at their car can still ask for them by name: in this example the call transfers to the lead advisor's cell, and if nobody picks up, a message naming that advisor lands in the inbox.