What is a vehicle health check (VHC)?
What a vehicle health check (VHC) is, what to check, how red, amber and green work, and how independent garages turn checks into approved work.
A vehicle health check (VHC) is a short, structured inspection a garage carries out whenever a car is in, whatever it came in for. The technician works through a fixed list of items, marks each one green, amber or red, and the garage tells the customer what needs doing now, what can wait and what is fine. Done well, it keeps cars safer, builds trust and brings in work the customer actually wants.
Why garages do health checks
A car booked in for a service or a puncture is already on the ramp. Checking the rest of it takes a few minutes and answers questions the customer would otherwise never ask:
- Safety. Worn tyres, low brake pads and failed bulbs are found before they become an MOT failure or a roadside problem.
- Trust. A customer who is shown the condition of their car, item by item, sees a garage that looks after them rather than one that "always finds something".
- Planned work. Amber items become next month's booking instead of an emergency at another garage.
What a typical checklist covers
Every garage sets its own list, but most cover the parts that wear and the parts that fail an MOT:
| Area | What the technician looks at |
|---|---|
| Tyres | Tread depth across the tyre, uneven wear, cuts, bulges, pressures |
| Brakes | Pad and disc condition, fluid level and age |
| Lights | Every exterior bulb, including number plate and brake lights |
| Visibility | Wiper blades, washer jets, windscreen chips |
| Fluids | Engine oil, coolant, power steering and screen wash levels; visible leaks |
| Battery | Terminals, mounting and, where a tester is used, its health |
| Steering and suspension | Play, worn bushes, split gaiters, leaking dampers |
| Exhaust | Leaks, corrosion, mountings |
For tyres there is a clear legal line in the UK: car tyres need at least 1.6 mm of tread across the central three-quarters of the tread, around the whole tyre. Many garages advise replacement well before that, and say so on the health check.
Red, amber and green
The traffic-light system is what makes a health check easy to act on:
- Red: needs doing now. Unsafe, illegal or about to fail. The customer should decide before the car leaves.
- Amber: needs attention soon. Wearing, but not yet a problem. A good moment to book it in, or to remind the customer later.
- Green: fine. Checked and nothing to do. Showing the greens matters too: it proves the check was done.
Keep the rule simple and use it the same way across the team, so a red from one technician means the same as a red from another.
Paper, tablet or phone
A paper sheet works, but it stays in the workshop. The customer hears about it on the phone, without seeing anything, and the amber items are forgotten once the job card is filed.
A digital health check moves three things to the customer's screen:
- The evidence. A photo of the 2 mm brake pad, or a 20-second video of the play in a track rod end, explains more than any description.
- The price, per item. The customer can see what each job costs, including VAT, before they say yes.
- The choice, per item. Approving the brakes and leaving the tyres for next month is a normal answer, and the garage still knows about the tyres.
Turning a health check into approved work
Finding the work is half the job. The other half is how it reaches the customer:
- Send it while the car is still on the ramp. A decision in ten minutes keeps the bay moving; a call-back at five o'clock does not.
- Write notes in plain words. "Front pads 2 mm, braking will get worse quickly" beats "F/P worn".
- Let them choose line by line. All-or-nothing quotes get "nothing" more often than they should.
- Keep a record of what was agreed. When the customer approved, at what price, on which device. It settles the "I never agreed to that" conversation before it starts.
- Follow up the ambers. The work a customer leaves for later is a booking you have not taken yet. We cover that in how to win back deferred work.
Common mistakes
- Checking everything but only mentioning the reds, so the customer never learns why the garage was thorough.
- Prices given verbally and differently by different people.
- No photo, so the customer has to take the garage's word for it.
- Amber items written down and never mentioned again.
Where Servenk fits
Servenk is built for exactly this part of the job: the technician records the health check on a phone with photos, video and a price per item, the customer approves or defers each item from a link sent by email or WhatsApp, and Servenk sends the reminder when the deferred work is due. It sits next to your garage management system rather than replacing it. See how it works.